Play interactive tour

Edit tour

Windows Analysis Report AfWu3i35ny.exe

Overview

General Information

Sample Name:	AfWu3i35ny.exe
Analysis ID:	501914
MD5:	25aa37e21c29b7cff02509533b585ed7
SHA1:	4374948e203cba151ebdc43e11e6e115046270e9
SHA256:	740a2bc7e9c8eeed76ef0f812c6c89af35c414317d76ac5b50b28ca0728d103b
Tags:	exeFormbook
Infos:
Most interesting Screenshot:

Detection

FormBook GuLoader

Score:	100
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Antivirus / Scanner detection for submitted sample

Found malware configuration

Potential malicious icon found

Yara detected FormBook

Malicious sample detected (through community Yara rule)

Yara detected GuLoader

Tries to detect virtualization through RDTSC time measurements

C2 URLs / IPs found in malware configuration

Found potential dummy code loops (likely to delay analysis)

Machine Learning detection for sample

Creates a DirectInput object (often for capturing keystrokes)

Uses 32bit PE files

Yara signature match

Antivirus or Machine Learning detection for unpacked file

Sample file is different than original file name gathered from version info

PE file contains strange resources

Contains functionality to read the PEB

Uses code obfuscation techniques (call, push, ret)

Detected potential crypto function

Found potential string decryption / allocating functions

Program does not show much activity (idle)

Contains functionality for execution timing, often used to detect debuggers

Abnormal high CPU Usage

Classification

Process Tree

System is w10x64

AfWu3i35ny.exe (PID: 4536 cmdline: 'C:\Users\user\Desktop\AfWu3i35ny.exe' MD5: 25AA37E21C29B7CFF02509533B585ED7)

cleanup

Malware Configuration

Threatname: GuLoader

{"Payload URL": "http://45.137.22.91/blm.bin"}

Yara Overview

Initial Sample

Source	Rule	Description	Author	Strings
AfWu3i35ny.exe	JoeSecurity_FormBook	Yara detected FormBook	Joe Security
AfWu3i35ny.exe	Formbook_1	autogenerated rule brought to you by yara-signator	Felix Bilstein - yara-signator at cocacoding dot com	0x379b5:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC 0x37d4f:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC 0x1ac62:$sequence_1: 3C 24 0F 84 76 FF FF FF 3C 25 74 94 0x1a74e:$sequence_2: 3B 4F 14 73 95 85 C9 74 91 0x1ad64:$sequence_3: 3C 69 75 44 8B 7D 18 8B 0F 0x1aedc:$sequence_4: 5D C3 8D 50 7C 80 FA 07 0x38767:$sequence_5: 0F BE 5C 0E 01 0F B6 54 0E 02 83 E3 0F C1 EA 06 0x199c9:$sequence_6: 57 89 45 FC 89 45 F4 89 45 F8 0x394df:$sequence_7: 66 89 0C 02 5B 8B E5 5D 0x20134:$sequence_8: 3C 54 74 04 3C 74 75 F4 0x211d7:$sequence_9: 56 68 03 01 00 00 8D 85 95 FE FF FF 6A 00
AfWu3i35ny.exe	Formbook	detect Formbook in memory	JPCERT/CC Incident Response Group	0x1d066:$sqlite3step: 68 34 1C 7B E1 0x1d179:$sqlite3step: 68 34 1C 7B E1 0x1d095:$sqlite3text: 68 38 2A 90 C5 0x1d1ba:$sqlite3text: 68 38 2A 90 C5 0x1d0a8:$sqlite3blob: 68 53 D8 7F 8C 0x1d1d0:$sqlite3blob: 68 53 D8 7F 8C

Memory Dumps

Source	Rule	Description	Author	Strings
00000000.00000002.834854327.00000000021C0000.00000040.00000001.sdmp	JoeSecurity_GuLoader_2	Yara detected GuLoader	Joe Security
00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp	JoeSecurity_FormBook	Yara detected FormBook	Joe Security
00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp	Formbook_1	autogenerated rule brought to you by yara-signator	Felix Bilstein - yara-signator at cocacoding dot com	0x369b5:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC 0x36d4f:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC 0x19c62:$sequence_1: 3C 24 0F 84 76 FF FF FF 3C 25 74 94 0x1974e:$sequence_2: 3B 4F 14 73 95 85 C9 74 91 0x19d64:$sequence_3: 3C 69 75 44 8B 7D 18 8B 0F 0x19edc:$sequence_4: 5D C3 8D 50 7C 80 FA 07 0x37767:$sequence_5: 0F BE 5C 0E 01 0F B6 54 0E 02 83 E3 0F C1 EA 06 0x189c9:$sequence_6: 57 89 45 FC 89 45 F4 89 45 F8 0x384df:$sequence_7: 66 89 0C 02 5B 8B E5 5D 0x1f134:$sequence_8: 3C 54 74 04 3C 74 75 F4 0x201d7:$sequence_9: 56 68 03 01 00 00 8D 85 95 FE FF FF 6A 00
00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp	Formbook	detect Formbook in memory	JPCERT/CC Incident Response Group	0x1c066:$sqlite3step: 68 34 1C 7B E1 0x1c179:$sqlite3step: 68 34 1C 7B E1 0x1c095:$sqlite3text: 68 38 2A 90 C5 0x1c1ba:$sqlite3text: 68 38 2A 90 C5 0x1c0a8:$sqlite3blob: 68 53 D8 7F 8C 0x1c1d0:$sqlite3blob: 68 53 D8 7F 8C
00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp	JoeSecurity_FormBook	Yara detected FormBook	Joe Security
00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp	Formbook_1	autogenerated rule brought to you by yara-signator	Felix Bilstein - yara-signator at cocacoding dot com	0x369b5:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC 0x36d4f:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC 0x19c62:$sequence_1: 3C 24 0F 84 76 FF FF FF 3C 25 74 94 0x1974e:$sequence_2: 3B 4F 14 73 95 85 C9 74 91 0x19d64:$sequence_3: 3C 69 75 44 8B 7D 18 8B 0F 0x19edc:$sequence_4: 5D C3 8D 50 7C 80 FA 07 0x37767:$sequence_5: 0F BE 5C 0E 01 0F B6 54 0E 02 83 E3 0F C1 EA 06 0x189c9:$sequence_6: 57 89 45 FC 89 45 F4 89 45 F8 0x384df:$sequence_7: 66 89 0C 02 5B 8B E5 5D 0x1f134:$sequence_8: 3C 54 74 04 3C 74 75 F4 0x201d7:$sequence_9: 56 68 03 01 00 00 8D 85 95 FE FF FF 6A 00
00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp	Formbook	detect Formbook in memory	JPCERT/CC Incident Response Group	0x1c066:$sqlite3step: 68 34 1C 7B E1 0x1c179:$sqlite3step: 68 34 1C 7B E1 0x1c095:$sqlite3text: 68 38 2A 90 C5 0x1c1ba:$sqlite3text: 68 38 2A 90 C5 0x1c0a8:$sqlite3blob: 68 53 D8 7F 8C 0x1c1d0:$sqlite3blob: 68 53 D8 7F 8C
Click to see the 2 entries

Unpacked PEs

Source	Rule	Description	Author	Strings
0.2.AfWu3i35ny.exe.400000.0.unpack	JoeSecurity_FormBook	Yara detected FormBook	Joe Security
0.2.AfWu3i35ny.exe.400000.0.unpack	Formbook_1	autogenerated rule brought to you by yara-signator	Felix Bilstein - yara-signator at cocacoding dot com	0x379b5:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC 0x37d4f:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC 0x1ac62:$sequence_1: 3C 24 0F 84 76 FF FF FF 3C 25 74 94 0x1a74e:$sequence_2: 3B 4F 14 73 95 85 C9 74 91 0x1ad64:$sequence_3: 3C 69 75 44 8B 7D 18 8B 0F 0x1aedc:$sequence_4: 5D C3 8D 50 7C 80 FA 07 0x38767:$sequence_5: 0F BE 5C 0E 01 0F B6 54 0E 02 83 E3 0F C1 EA 06 0x199c9:$sequence_6: 57 89 45 FC 89 45 F4 89 45 F8 0x394df:$sequence_7: 66 89 0C 02 5B 8B E5 5D 0x20134:$sequence_8: 3C 54 74 04 3C 74 75 F4 0x211d7:$sequence_9: 56 68 03 01 00 00 8D 85 95 FE FF FF 6A 00
0.2.AfWu3i35ny.exe.400000.0.unpack	Formbook	detect Formbook in memory	JPCERT/CC Incident Response Group	0x1d066:$sqlite3step: 68 34 1C 7B E1 0x1d179:$sqlite3step: 68 34 1C 7B E1 0x1d095:$sqlite3text: 68 38 2A 90 C5 0x1d1ba:$sqlite3text: 68 38 2A 90 C5 0x1d0a8:$sqlite3blob: 68 53 D8 7F 8C 0x1d1d0:$sqlite3blob: 68 53 D8 7F 8C
0.0.AfWu3i35ny.exe.400000.0.unpack	JoeSecurity_FormBook	Yara detected FormBook	Joe Security
0.0.AfWu3i35ny.exe.400000.0.unpack	Formbook_1	autogenerated rule brought to you by yara-signator	Felix Bilstein - yara-signator at cocacoding dot com	0x379b5:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC 0x37d4f:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC 0x1ac62:$sequence_1: 3C 24 0F 84 76 FF FF FF 3C 25 74 94 0x1a74e:$sequence_2: 3B 4F 14 73 95 85 C9 74 91 0x1ad64:$sequence_3: 3C 69 75 44 8B 7D 18 8B 0F 0x1aedc:$sequence_4: 5D C3 8D 50 7C 80 FA 07 0x38767:$sequence_5: 0F BE 5C 0E 01 0F B6 54 0E 02 83 E3 0F C1 EA 06 0x199c9:$sequence_6: 57 89 45 FC 89 45 F4 89 45 F8 0x394df:$sequence_7: 66 89 0C 02 5B 8B E5 5D 0x20134:$sequence_8: 3C 54 74 04 3C 74 75 F4 0x211d7:$sequence_9: 56 68 03 01 00 00 8D 85 95 FE FF FF 6A 00
0.0.AfWu3i35ny.exe.400000.0.unpack	Formbook	detect Formbook in memory	JPCERT/CC Incident Response Group	0x1d066:$sqlite3step: 68 34 1C 7B E1 0x1d179:$sqlite3step: 68 34 1C 7B E1 0x1d095:$sqlite3text: 68 38 2A 90 C5 0x1d1ba:$sqlite3text: 68 38 2A 90 C5 0x1d0a8:$sqlite3blob: 68 53 D8 7F 8C 0x1d1d0:$sqlite3blob: 68 53 D8 7F 8C
Click to see the 1 entries

Sigma Overview

No Sigma rule has matched

Jbx Signature Overview

Click to jump to signature section

Show All Signature Results

AV Detection:

Antivirus / Scanner detection for submitted sample

Show sources

Source: AfWu3i35ny.exe

Avira: detected

Found malware configuration

Show sources

Source: 00000000.00000002.834854327.00000000021C0000.00000040.00000001.sdmp

Malware Configuration Extractor: GuLoader {"Payload URL": "http://45.137.22.91/blm.bin"}

Yara detected FormBook

Show sources

Source: Yara match	File source: AfWu3i35ny.exe, type: SAMPLE
Source: Yara match	File source: 0.2.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.0.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match	File source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, type: MEMORY

Machine Learning detection for sample

Show sources

Source: AfWu3i35ny.exe

Joe Sandbox ML: detected

Source: 0.0.AfWu3i35ny.exe.400000.0.unpack	Avira: Label: TR/Dropper.Gen2
Source: 0.2.AfWu3i35ny.exe.400000.0.unpack	Avira: Label: TR/Dropper.Gen2

Source: AfWu3i35ny.exe

Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED

Networking:

C2 URLs / IPs found in malware configuration

Show sources

Source: Malware configuration extractor

URLs: http://45.137.22.91/blm.bin

Source: AfWu3i35ny.exe, 00000000.00000002.833477625.000000000066A000.00000004.00000020.sdmp

Binary or memory string: <HOOK MODULE="DDRAW.DLL" FUNCTION="DirectDrawCreateEx"/>

E-Banking Fraud:

Yara detected FormBook

Show sources

Source: Yara match	File source: AfWu3i35ny.exe, type: SAMPLE
Source: Yara match	File source: 0.2.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.0.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match	File source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, type: MEMORY

System Summary:

Potential malicious icon found

Show sources

Source: initial sample

Icon embedded in PE file: bad icon match: 20047c7c70f0e004

Malicious sample detected (through community Yara rule)

Show sources

Source: AfWu3i35ny.exe, type: SAMPLE	Matched rule: autogenerated rule brought to you by yara-signator Author: Felix Bilstein - yara-signator at cocacoding dot com
Source: AfWu3i35ny.exe, type: SAMPLE	Matched rule: detect Formbook in memory Author: JPCERT/CC Incident Response Group
Source: 0.2.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE	Matched rule: autogenerated rule brought to you by yara-signator Author: Felix Bilstein - yara-signator at cocacoding dot com
Source: 0.2.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE	Matched rule: detect Formbook in memory Author: JPCERT/CC Incident Response Group
Source: 0.0.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE	Matched rule: autogenerated rule brought to you by yara-signator Author: Felix Bilstein - yara-signator at cocacoding dot com
Source: 0.0.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE	Matched rule: detect Formbook in memory Author: JPCERT/CC Incident Response Group
Source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, type: MEMORY	Matched rule: autogenerated rule brought to you by yara-signator Author: Felix Bilstein - yara-signator at cocacoding dot com
Source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, type: MEMORY	Matched rule: detect Formbook in memory Author: JPCERT/CC Incident Response Group
Source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, type: MEMORY	Matched rule: autogenerated rule brought to you by yara-signator Author: Felix Bilstein - yara-signator at cocacoding dot com
Source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, type: MEMORY	Matched rule: detect Formbook in memory Author: JPCERT/CC Incident Response Group

Source: AfWu3i35ny.exe

Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED

Source: AfWu3i35ny.exe, type: SAMPLE	Matched rule: Formbook_1 date = 2018-11-23, author = Felix Bilstein - yara-signator at cocacoding dot com, malpedia_version = 20180607, description = autogenerated rule brought to you by yara-signator, malpedia_reference = https://malpedia.caad.fkie.fraunhofer.de/details/win.formbook, cape_type = Formbook Payload, malpedia_license = CC BY-NC-SA 4.0, version = 1, tool = yara-signator 0.1a, malpedia_sharing = TLP:WHITE
Source: AfWu3i35ny.exe, type: SAMPLE	Matched rule: Formbook author = JPCERT/CC Incident Response Group, description = detect Formbook in memory, rule_usage = memory scan, reference = internal research
Source: 0.2.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE	Matched rule: Formbook_1 date = 2018-11-23, author = Felix Bilstein - yara-signator at cocacoding dot com, malpedia_version = 20180607, description = autogenerated rule brought to you by yara-signator, malpedia_reference = https://malpedia.caad.fkie.fraunhofer.de/details/win.formbook, cape_type = Formbook Payload, malpedia_license = CC BY-NC-SA 4.0, version = 1, tool = yara-signator 0.1a, malpedia_sharing = TLP:WHITE
Source: 0.2.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE	Matched rule: Formbook author = JPCERT/CC Incident Response Group, description = detect Formbook in memory, rule_usage = memory scan, reference = internal research
Source: 0.0.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE	Matched rule: Formbook_1 date = 2018-11-23, author = Felix Bilstein - yara-signator at cocacoding dot com, malpedia_version = 20180607, description = autogenerated rule brought to you by yara-signator, malpedia_reference = https://malpedia.caad.fkie.fraunhofer.de/details/win.formbook, cape_type = Formbook Payload, malpedia_license = CC BY-NC-SA 4.0, version = 1, tool = yara-signator 0.1a, malpedia_sharing = TLP:WHITE
Source: 0.0.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE	Matched rule: Formbook author = JPCERT/CC Incident Response Group, description = detect Formbook in memory, rule_usage = memory scan, reference = internal research
Source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, type: MEMORY	Matched rule: Formbook_1 date = 2018-11-23, author = Felix Bilstein - yara-signator at cocacoding dot com, malpedia_version = 20180607, description = autogenerated rule brought to you by yara-signator, malpedia_reference = https://malpedia.caad.fkie.fraunhofer.de/details/win.formbook, cape_type = Formbook Payload, malpedia_license = CC BY-NC-SA 4.0, version = 1, tool = yara-signator 0.1a, malpedia_sharing = TLP:WHITE
Source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, type: MEMORY	Matched rule: Formbook author = JPCERT/CC Incident Response Group, description = detect Formbook in memory, rule_usage = memory scan, reference = internal research
Source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, type: MEMORY	Matched rule: Formbook_1 date = 2018-11-23, author = Felix Bilstein - yara-signator at cocacoding dot com, malpedia_version = 20180607, description = autogenerated rule brought to you by yara-signator, malpedia_reference = https://malpedia.caad.fkie.fraunhofer.de/details/win.formbook, cape_type = Formbook Payload, malpedia_license = CC BY-NC-SA 4.0, version = 1, tool = yara-signator 0.1a, malpedia_sharing = TLP:WHITE
Source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, type: MEMORY	Matched rule: Formbook author = JPCERT/CC Incident Response Group, description = detect Formbook in memory, rule_usage = memory scan, reference = internal research

Source: AfWu3i35ny.exe, 00000000.00000000.306480854.0000000000446000.00000002.00020000.sdmp	Binary or memory string: OriginalFilenameDikter.exe vs AfWu3i35ny.exe
Source: AfWu3i35ny.exe, 00000000.00000002.835081490.0000000002A10000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameDikter.exeFE2X vs AfWu3i35ny.exe
Source: AfWu3i35ny.exe	Binary or memory string: OriginalFilenameDikter.exe vs AfWu3i35ny.exe

Source: AfWu3i35ny.exe

Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST

Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_0043802D
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_0043212D
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_0043234D
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_004303CD
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_00421E50
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_00422F20
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C6672
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C8706
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C6872
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C69A6

Source: C:\Users\user\Desktop\AfWu3i35ny.exe

Code function: String function: 0040177E appears 94 times

Source: C:\Users\user\Desktop\AfWu3i35ny.exe

Process Stats: CPU usage > 98%

Source: AfWu3i35ny.exe

Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ

Source: C:\Users\user\Desktop\AfWu3i35ny.exe

Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers

Source: C:\Users\user\Desktop\AfWu3i35ny.exe

Section loaded: C:\Windows\SysWOW64\msvbvm60.dll

Source: classification engine

Classification label: mal100.rans.troj.evad.winEXE@1/0@0/0

Data Obfuscation:

Yara detected GuLoader

Show sources

Source: Yara match

File source: 00000000.00000002.834854327.00000000021C0000.00000040.00000001.sdmp, type: MEMORY

Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_00402070 push ebx; iretd
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_0040F87D push ds; ret
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_004059C4 push cs; iretw
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_00421DAF push eax; ret
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_00421E19 push eax; ret
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C027E push ds; iretd
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C766E push ds; iretd
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C030C push ds; iretd
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C1F50 push ebp; ret
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C0392 push ds; iretd
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C4FB9 pushfd ; iretd
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C78EB push ebx; iretd
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C74E1 push edi; iretd

Source: initial sample

Static PE information: section name: .text entropy: 7.17479842318

Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Process information set: NOOPENFILEERRORBOX

Malware Analysis System Evasion:

Tries to detect virtualization through RDTSC time measurements

Show sources

Source: C:\Users\user\Desktop\AfWu3i35ny.exe

RDTSC instruction interceptor: First address: 00000000021CA82E second address: 00000000021CA82E instructions: 0x00000000 rdtsc 0x00000002 mov eax, 27162939h 0x00000007 add eax, FB6A8BD9h 0x0000000c add eax, 26ECCA53h 0x00000011 sub eax, 496D7F64h 0x00000016 cpuid 0x00000018 test cl, bl 0x0000001a popad 0x0000001b call 00007F23608F1008h 0x00000020 lfence 0x00000023 mov edx, 3E29BAC0h 0x00000028 sub edx, 048E8A76h 0x0000002e sub edx, 3246429Ah 0x00000034 xor edx, 78AAEDA4h 0x0000003a mov edx, dword ptr [edx] 0x0000003c lfence 0x0000003f cmp dl, al 0x00000041 cmp edx, D97DEC47h 0x00000047 test ah, dh 0x00000049 cmp bx, ax 0x0000004c ret 0x0000004d sub edx, esi 0x0000004f ret 0x00000050 cmp bh, ch 0x00000052 add edi, edx 0x00000054 dec dword ptr [ebp+000000F8h] 0x0000005a cmp dl, cl 0x0000005c cmp dword ptr [ebp+000000F8h], 00000000h 0x00000063 jne 00007F23608F0FE3h 0x00000065 test ch, bh 0x00000067 cmp cl, 00000012h 0x0000006a call 00007F23608F10CEh 0x0000006f call 00007F23608F102Bh 0x00000074 lfence 0x00000077 mov edx, 3E29BAC0h 0x0000007c sub edx, 048E8A76h 0x00000082 sub edx, 3246429Ah 0x00000088 xor edx, 78AAEDA4h 0x0000008e mov edx, dword ptr [edx] 0x00000090 lfence 0x00000093 cmp dl, al 0x00000095 cmp edx, D97DEC47h 0x0000009b test ah, dh 0x0000009d cmp bx, ax 0x000000a0 ret 0x000000a1 mov esi, edx 0x000000a3 pushad 0x000000a4 rdtsc

Source: all processes

Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected

Source: C:\Users\user\Desktop\AfWu3i35ny.exe

Code function: 0_2_004379AD rdtsc

Anti Debugging:

Found potential dummy code loops (likely to delay analysis)

Show sources

Source: C:\Users\user\Desktop\AfWu3i35ny.exe

Process Stats: CPU usage > 90% for more than 60s

Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021CA3C8 mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C8012 mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\AfWu3i35ny.exe	Code function: 0_2_021C9D8F mov eax, dword ptr fs:[00000030h]

Source: all processes

Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected

Source: C:\Users\user\Desktop\AfWu3i35ny.exe

Code function: 0_2_004379AD rdtsc

Source: AfWu3i35ny.exe, 00000000.00000002.833785069.0000000000CF0000.00000002.00020000.sdmp	Binary or memory string: Program Manager
Source: AfWu3i35ny.exe, 00000000.00000002.833785069.0000000000CF0000.00000002.00020000.sdmp	Binary or memory string: Shell_TrayWnd
Source: AfWu3i35ny.exe, 00000000.00000002.833785069.0000000000CF0000.00000002.00020000.sdmp	Binary or memory string: Progman
Source: AfWu3i35ny.exe, 00000000.00000002.833785069.0000000000CF0000.00000002.00020000.sdmp	Binary or memory string: Progmanlock

Stealing of Sensitive Information:

Yara detected FormBook

Show sources

Source: Yara match	File source: AfWu3i35ny.exe, type: SAMPLE
Source: Yara match	File source: 0.2.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.0.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match	File source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, type: MEMORY

Remote Access Functionality:

Yara detected FormBook

Show sources

Source: Yara match	File source: AfWu3i35ny.exe, type: SAMPLE
Source: Yara match	File source: 0.2.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.0.AfWu3i35ny.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match	File source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, type: MEMORY

Mitre Att&ck Matrix

Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Exfiltration	Command and Control	Network Effects	Remote Service Effects	Impact
Valid Accounts	Windows Management Instrumentation	Path Interception	Process Injection1	Virtualization/Sandbox Evasion11	Input Capture1	Security Software Discovery21	Remote Services	Input Capture1	Exfiltration Over Other Network Medium	Encrypted Channel1	Eavesdrop on Insecure Network Communication	Remotely Track Device Without Authorization	Modify System Partition
Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Software Packing2	LSASS Memory	Virtualization/Sandbox Evasion11	Remote Desktop Protocol	Archive Collected Data1	Exfiltration Over Bluetooth	Application Layer Protocol1	Exploit SS7 to Redirect Phone Calls/SMS	Remotely Wipe Data Without Authorization	Device Lockout
Domain Accounts	At (Linux)	Logon Script (Windows)	Logon Script (Windows)	Process Injection1	Security Account Manager	Process Discovery1	SMB/Windows Admin Shares	Data from Network Shared Drive	Automated Exfiltration	Steganography	Exploit SS7 to Track Device Location	Obtain Device Cloud Backups	Delete Device Data
Local Accounts	At (Windows)	Logon Script (Mac)	Logon Script (Mac)	Deobfuscate/Decode Files or Information1	NTDS	System Information Discovery11	Distributed Component Object Model	Input Capture	Scheduled Transfer	Protocol Impersonation	SIM Card Swap		Carrier Billing Fraud
Cloud Accounts	Cron	Network Logon Script	Network Logon Script	Obfuscated Files or Information3	LSA Secrets	Remote System Discovery	SSH	Keylogging	Data Transfer Size Limits	Fallback Channels	Manipulate Device Communication		Manipulate App Store Rankings or Ratings

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Is Windows Process
Number of created Registry Values
Number of created Files
Visual Basic
Delphi
Java
.Net C# or VB.NET
C, C++ or other language
Is malicious
Internet

Screenshots

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
AfWu3i35ny.exe	100%	Avira	TR/Dropper.Gen2
AfWu3i35ny.exe	100%	Joe Sandbox ML

Dropped Files

No Antivirus matches

Unpacked PE Files

Source	Detection	Scanner	Label	Link	Download
0.0.AfWu3i35ny.exe.400000.0.unpack	100%	Avira	TR/Dropper.Gen2		Download File
0.2.AfWu3i35ny.exe.400000.0.unpack	100%	Avira	TR/Dropper.Gen2		Download File

Domains

No Antivirus matches

URLs

Source	Detection	Scanner	Label	Link
http://45.137.22.91/blm.bin	0%	Avira URL Cloud	safe

Domains and IPs

Contacted Domains

No contacted domains info

Contacted URLs

Name	Malicious	Antivirus Detection	Reputation
http://45.137.22.91/blm.bin	true	Avira URL Cloud: safe	unknown

Contacted IPs

No contacted IP infos

General Information

Joe Sandbox Version:	33.0.0 White Diamond
Analysis ID:	501914
Start date:	13.10.2021
Start time:	12:07:33
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 8m 20s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	AfWu3i35ny.exe
Cookbook file name:	default.jbs
Analysis system description:	Windows 10 64 bit v1803 with Office Professional Plus 2016, Chrome 85, IE 11, Adobe Reader DC 19, Java 8 Update 211
Number of analysed new started processes analysed:	19
Number of new started drivers analysed:	0
Number of existing processes analysed:	0
Number of existing drivers analysed:	0
Number of injected processes analysed:	0
Technologies:	HCA enabled EGA enabled HDC enabled AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Detection:	MAL
Classification:	mal100.rans.troj.evad.winEXE@1/0@0/0
EGA Information:	Failed
HDC Information:	Successful, ratio: 15.5% (good quality ratio 14.8%) Quality average: 67.7% Quality standard deviation: 28.1%
HCA Information:	Failed
Cookbook Comments:	Adjust boot time Enable AMSI Found application associated with file extension: .exe Override analysis time to 240s for sample files taking high CPU consumption
Warnings:	Show All Exclude process from analysis (whitelisted): MpCmdRun.exe, audiodg.exe, BackgroundTransferHost.exe, WMIADAP.exe, backgroundTaskHost.exe, conhost.exe, svchost.exe, wuapihost.exe Excluded IPs from analysis (whitelisted): 95.100.218.79, 20.82.210.154, 2.20.178.56, 2.20.178.10, 20.199.120.151, 2.20.178.24, 2.20.178.33, 20.199.120.85, 20.54.110.249, 40.112.88.60, 95.100.216.89, 20.199.120.182 Excluded domains from analysis (whitelisted): store-images.s-microsoft.com-c.edgekey.net, iris-de-prod-azsc-neu-b.northeurope.cloudapp.azure.com, a767.dspw65.akamai.net, a1449.dscg2.akamai.net, fs-wildcard.microsoft.com.edgekey.net, fs-wildcard.microsoft.com.edgekey.net.globalredir.akadns.net, arc.msn.com, e12564.dspb.akamaiedge.net, wns.notify.trafficmanager.net, consumer-displaycatalogrp-aks2aks-europe.md.mp.microsoft.com.akadns.net, arc.trafficmanager.net, displaycatalog.mp.microsoft.com, img-prod-cms-rt-microsoft-com.akamaized.net, prod.fs.microsoft.com.akadns.net, client.wns.windows.com, fs.microsoft.com, displaycatalog-rp-europe.md.mp.microsoft.com.akadns.net, wu-shim.trafficmanager.net, neu-displaycatalogrp.frontdoor.bigcatalog.commerce.microsoft.com, ris-prod.trafficmanager.net, asf-ris-prod-neu.northeurope.cloudapp.azure.com, ctldl.windowsupdate.com, e1723.g.akamaiedge.net, download.windowsupdate.com.edgesuite.net, ris.api.iris.microsoft.com, store-images.s-microsoft.com, displaycatalog-rp.md.mp.microsoft.com.akadns.net Not all processes where analyzed, report is missing behavior information VT rate limit hit for: /opt/package/joesandbox/database/analysis/501914/sample/AfWu3i35ny.exe

Simulations

Behavior and APIs

No simulations

Joe Sandbox View / Context

IPs

No context

Domains

No context

ASN

No context

JA3 Fingerprints

No context

Dropped Files

No context

Created / dropped Files

No created / dropped files found

Static File Info

General
File type:	PE32 executable (GUI) Intel 80386, for MS Windows
Entropy (8bit):	6.957088133300485
TrID:	Win32 Executable (generic) a (10002005/4) 99.15% Win32 Executable Microsoft Visual Basic 6 (82127/2) 0.81% Generic Win/DOS Executable (2004/3) 0.02% DOS Executable Generic (2002/1) 0.02% Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.00%
File name:	AfWu3i35ny.exe
File size:	307200
MD5:	25aa37e21c29b7cff02509533b585ed7
SHA1:	4374948e203cba151ebdc43e11e6e115046270e9
SHA256:	740a2bc7e9c8eeed76ef0f812c6c89af35c414317d76ac5b50b28ca0728d103b
SHA512:	8cb7b92766fd27a1bc888f39e3dedbb73b5e8ca58b8790a9818d8d08f0964fa4c1bc5528d9ea062a76293cdf101d43fbd0790ed8bf7fca9c251825a4ce7d61ae
SSDEEP:	6144:w7XxnWJoyJuoMQF9CxX/tO7JS4PIcJaL:w7BnkRMQHg/tGTPBU
File Content Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$........#...B...B...B..L^...B...`...B...d...B..Rich.B..........PE..L.....TR.................@...`......h........P....@.............B..

File Icon


Icon Hash:	20047c7c70f0e004

Static PE Info

General
Entrypoint:	0x401868
Entrypoint Section:	.text
Digitally signed:	false
Imagebase:	0x400000
Subsystem:	windows gui
Image File Characteristics:	LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
DLL Characteristics:
Time Stamp:	0x52548ACC [Tue Oct 8 22:44:28 2013 UTC]
TLS Callbacks:
CLR (.Net) Version:
OS Version Major:	4
OS Version Minor:	0
File Version Major:	4
File Version Minor:	0
Subsystem Version Major:	4
Subsystem Version Minor:	0
Import Hash:	c727a98e677fb7bd25bb06d2a2d956f1

Entrypoint Preview

Instruction
push 00439BD0h
call 00007F2360E34E15h
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
xor byte ptr [eax], al
add byte ptr [eax], al
inc eax
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [edi-7DACF77Bh], ah
xor edx, dword ptr [ecx+4Ch]
mov byte ptr [edx+0Fh], dl

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IMPORT	0x44154	0x28	.text
IMAGE_DIRECTORY_ENTRY_RESOURCE	0x46000	0x4562	.rsrc
IMAGE_DIRECTORY_ENTRY_EXCEPTION	0x0	0x0
IMAGE_DIRECTORY_ENTRY_SECURITY	0x0	0x0
IMAGE_DIRECTORY_ENTRY_BASERELOC	0x0	0x0
IMAGE_DIRECTORY_ENTRY_DEBUG	0x0	0x0
IMAGE_DIRECTORY_ENTRY_COPYRIGHT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_GLOBALPTR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_TLS	0x0	0x0
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG	0x0	0x0
IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT	0x228	0x20
IMAGE_DIRECTORY_ENTRY_IAT	0x1000	0x154	.text
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_RESERVED	0x0	0x0

Sections

Name	Virtual Address	Virtual Size	Raw Size	Xored PE	ZLIB Complexity	File Type	Entropy	Characteristics
.text	0x1000	0x43690	0x44000	False	0.670539407169	data	7.17479842318	IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
.data	0x45000	0xaf0	0x1000	False	0.00634765625	data	0.0	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ
.rsrc	0x46000	0x4562	0x5000	False	0.3958984375	data	4.60998662802	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ

Resources

Name	RVA	Size	Type	Language	Country
DATA	0x46a74	0x3aee	MS Windows icon resource - 3 icons, 48x48, 32 bits/pixel, 32x32, 32 bits/pixel	English	United States
RT_ICON	0x46944	0x130	data
RT_ICON	0x4665c	0x2e8	data
RT_ICON	0x46534	0x128	GLS_BINARY_LSB_FIRST
RT_GROUP_ICON	0x46504	0x30	data
RT_VERSION	0x461a0	0x364	data	English	United States

Imports

DLL

Import

MSVBVM60.DLL

_CIcos, _adj_fptan, __vbaVarMove, __vbaFreeVar, __vbaStrVarMove, __vbaFreeVarList, _adj_fdiv_m64, _adj_fprem1, __vbaSetSystemError, __vbaHresultCheckObj, __vbaLenBstrB, _adj_fdiv_m32, __vbaAryDestruct, __vbaOnError, __vbaObjSet, _adj_fdiv_m16i, __vbaObjSetAddref, _adj_fdivr_m16i, __vbaFpR8, _CIsin, __vbaChkstk, EVENT_SINK_AddRef, __vbaGenerateBoundsError, __vbaStrCmp, __vbaAryConstruct2, __vbaObjVar, DllFunctionCall, _adj_fpatan, __vbaRedim, EVENT_SINK_Release, _CIsqrt, EVENT_SINK_QueryInterface, __vbaExceptHandler, _adj_fprem, _adj_fdivr_m64, __vbaI2Str, __vbaFPException, _CIlog, __vbaNew2, _adj_fdiv_m32i, _adj_fdivr_m32i, __vbaStrCopy, __vbaI4Str, __vbaDerefAry1, _adj_fdivr_m32, _adj_fdiv_r, __vbaStrToAnsi, __vbaVarDup, __vbaFpI4, __vbaLateMemCallLd, _CIatan, __vbaStrMove, _allmul, __vbaLateIdSt, _CItan, _CIexp, __vbaFreeObj, __vbaFreeStr

Version Infos

Description	Data
Translation	0x0409 0x04b0
LegalCopyright	RealNetworks, Inc.
InternalName	Dikter
FileVersion	66.00
CompanyName	RealNetworks, Inc.
LegalTrademarks	RealNetworks, Inc.
Comments	RealNetworks, Inc.
ProductName	RealNetworks, Inc.
ProductVersion	66.00
FileDescription	RealNetworks, Inc.
OriginalFilename	Dikter.exe

Possible Origin

Language of compilation system	Country where language is spoken	Map
English	United States

Network Behavior

No network behavior found

Code Manipulations

Statistics

System Behavior

Analysis Process: AfWu3i35ny.exe PID: 4536 Parent PID: 5552

General

Start time:	12:08:38
Start date:	13/10/2021
Path:	C:\Users\user\Desktop\AfWu3i35ny.exe
Wow64 process (32bit):	true
Commandline:	'C:\Users\user\Desktop\AfWu3i35ny.exe'
Imagebase:	0x400000
File size:	307200 bytes
MD5 hash:	25AA37E21C29B7CFF02509533B585ED7
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	Visual Basic
Yara matches:	Rule: JoeSecurity_GuLoader_2, Description: Yara detected GuLoader, Source: 00000000.00000002.834854327.00000000021C0000.00000040.00000001.sdmp, Author: Joe Security Rule: JoeSecurity_FormBook, Description: Yara detected FormBook, Source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, Author: Joe Security Rule: Formbook_1, Description: autogenerated rule brought to you by yara-signator, Source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, Author: Felix Bilstein - yara-signator at cocacoding dot com Rule: Formbook, Description: detect Formbook in memory, Source: 00000000.00000000.306440334.0000000000401000.00000020.00020000.sdmp, Author: JPCERT/CC Incident Response Group Rule: JoeSecurity_FormBook, Description: Yara detected FormBook, Source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, Author: Joe Security Rule: Formbook_1, Description: autogenerated rule brought to you by yara-signator, Source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, Author: Felix Bilstein - yara-signator at cocacoding dot com Rule: Formbook, Description: detect Formbook in memory, Source: 00000000.00000002.833081784.0000000000401000.00000020.00020000.sdmp, Author: JPCERT/CC Incident Response Group
Reputation:	low

Disassembly

Code Analysis

Reset < >

Description:	Adversaries may inject code into processes in order to evade process-based defenses as well as possibly elevate privileges. Process injection is a method of executing arbitrary code in the address space of a separate live process. Running code in the context of another process may allow access to the process's memory, system/network resources, and possibly elevated privileges. Execution via process injection may also evade detection from security products since the execution is masked under a legitimate process.
Tactics:	Defense Evasion, Privilege Escalation
Data Sources:	API monitoring, DLL monitoring, File monitoring, Named Pipes, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ various means to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions of the implant. They may also search for VME artifacts before dropping secondary or additional payloads. Adversaries may use the information learned from [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497) during automated discovery to shape follow-on behaviors.
Tactics:	Defense Evasion, Discovery
Data Sources:	Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may perform software packing or virtual machine software protection to conceal their code. Software packing is a method of compressing or encrypting an executable. Packing an executable changes the file signature in an attempt to avoid signature-based detection. Most decompression techniques decompress the executable code in memory. Virtual machine software protection translates an executable's original code into a special format that only a special virtual machine can run. A virtual machine is then called to run this code.
Tactics:	Defense Evasion
Data Sources:	Binary file metadata
Platforms:	macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may use Obfuscated Files or Information to hide artifacts of an intrusion from analysis. They may require separate mechanisms to decode or deobfuscate that information depending on how they intend to use it. Methods for doing that include built-in functionality of malware or by using utilities present on the system.
Tactics:	Defense Evasion
Data Sources:	File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. This is common behavior that can be used across different platforms and the network to evade defenses.
Tactics:	Defense Evasion
Data Sources:	Binary file metadata, Email gateway, Environment variable, File monitoring, Malware reverse engineering, Network intrusion detection system, Network protocol analysis, Process command-line parameters, Process monitoring, Process use of network, SSL/TLS inspection, Windows event logs
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may use methods of capturing user input to obtain credentials or collect information. During normal system usage, users often provide credentials to various different locations, such as login pages/portals or system dialog boxes. Input capture mechanisms may be transparent to the user (e.g. Credential API Hooking ) or rely on deceiving the user into providing input into what they believe to be a genuine service (e.g. Web Portal Capture ).
Tactics:	Collection, Credential Access
Data Sources:	API monitoring, Binary file metadata, DLL monitoring, Kernel drivers, Loaded DLLs, PowerShell logs, Process command-line parameters, Process monitoring, User interface, Windows Registry, Windows event logs
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	AWS CloudTrail logs, Azure activity logs, File monitoring, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, Azure AD, GCP, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get information about running processes on a system. Information obtained could be used to gain an understanding of common software/applications running on systems within the network. Adversaries may use the information from Process Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	API monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	AWS CloudTrail logs, Azure activity logs, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, GCP, Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may compress and/or encrypt data that is collected prior to exfiltration. Compressing the data can help to obfuscate the collected data and minimize the amount of data sent over the network. Encryption can be used to hide information that is being exfiltrated from detection or make exfiltration less conspicuous upon inspection by a defender.
Tactics:	Collection
Data Sources:	Binary file metadata, File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Malware reverse engineering, Netflow/Enclave netflow, Packet capture, Process monitoring, Process use of network, SSL/TLS inspection
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	DNS records, Netflow/Enclave netflow, Network protocol analysis, Packet capture, Process monitoring, Process use of network
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading ...

Warning!

Windows Analysis Report AfWu3i35ny.exe

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Threatname: GuLoader

Yara Overview

Initial Sample

Memory Dumps

Unpacked PEs

Sigma Overview

Jbx Signature Overview

AV Detection:

Compliance:

Networking:

Key, Mouse, Clipboard, Microphone and Screen Capturing:

E-Banking Fraud:

System Summary:

Data Obfuscation:

Hooking and other Techniques for Hiding and Protection:

Malware Analysis System Evasion:

Anti Debugging:

HIPS / PFW / Operating System Protection Evasion:

Stealing of Sensitive Information:

Remote Access Functionality:

Mitre Att&ck Matrix

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Unpacked PE Files

Domains

URLs

Domains and IPs

Contacted Domains

Contacted URLs

Contacted IPs

General Information

Simulations

Behavior and APIs

Joe Sandbox View / Context

IPs

Domains

ASN

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

File Icon

Static PE Info

General

Entrypoint Preview

Data Directories

Sections

Resources

Imports

Version Infos

Possible Origin

Network Behavior

Code Manipulations

Statistics

System Behavior

Analysis Process: AfWu3i35ny.exe PID: 4536 Parent PID: 5552

General

Disassembly

Code Analysis