Analysis Report 21a5f8d0000.dll
Overview
General Information
Detection
Score: | 60 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Classification
Startup |
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Malware Configuration |
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No configs have been found |
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Yara Overview |
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Initial Sample |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_Ursnif | Yara detected Ursnif | Joe Security |
Sigma Overview |
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No Sigma rule has matched |
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Signature Overview |
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Click to jump to signature section
AV Detection: |
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Antivirus / Scanner detection for submitted sample | Show sources |
Source: | Avira: |
Machine Learning detection for sample | Show sources |
Source: | Joe Sandbox ML: |
Source: | String found in binary or memory: | ||
Source: | String found in binary or memory: | ||
Source: | String found in binary or memory: |
Key, Mouse, Clipboard, Microphone and Screen Capturing: |
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Yara detected Ursnif | Show sources |
Source: | File source: |
E-Banking Fraud: |
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Yara detected Ursnif | Show sources |
Source: | File source: |
Source: | Static PE information: |
Source: | Section loaded: | ||
Source: | Section loaded: |
Source: | Classification label: |
Source: | Mutant created: |
Source: | Static PE information: |
Source: | Key opened: |
Source: | Process created: |
Source: | Process created: | ||
Source: | Process created: | ||
Source: | Process created: | ||
Source: | Process created: | ||
Source: | Process created: | ||
Source: | Process created: | ||
Source: | Process created: | ||
Source: | Process created: | ||
Source: | Process created: |
Source: | Automated click: | ||
Source: | Automated click: |
Source: | Static PE information: |
Hooking and other Techniques for Hiding and Protection: |
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Yara detected Ursnif | Show sources |
Source: | File source: |
Source: | Process information set: | ||
Source: | Process information set: |
Source: | Last function: |
Source: | Binary or memory string: | ||
Source: | Binary or memory string: | ||
Source: | Binary or memory string: | ||
Source: | Binary or memory string: |
Source: | Process queried: |
Source: | Process created: |
Source: | WMI Queries: | ||
Source: | WMI Queries: | ||
Source: | WMI Queries: | ||
Source: | WMI Queries: |
Stealing of Sensitive Information: |
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Yara detected Ursnif | Show sources |
Source: | File source: |
Remote Access Functionality: |
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Yara detected Ursnif | Show sources |
Source: | File source: |
Mitre Att&ck Matrix |
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Initial Access | Execution | Persistence | Privilege Escalation | Defense Evasion | Credential Access | Discovery | Lateral Movement | Collection | Exfiltration | Command and Control | Network Effects | Remote Service Effects | Impact |
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Valid Accounts | Windows Management Instrumentation1 | DLL Side-Loading1 | Process Injection11 | Virtualization/Sandbox Evasion1 | OS Credential Dumping | Security Software Discovery21 | Remote Services | Data from Local System | Exfiltration Over Other Network Medium | Data Obfuscation | Eavesdrop on Insecure Network Communication | Remotely Track Device Without Authorization | Modify System Partition |
Default Accounts | Scheduled Task/Job | Boot or Logon Initialization Scripts | DLL Side-Loading1 | Rundll321 | LSASS Memory | Virtualization/Sandbox Evasion1 | Remote Desktop Protocol | Data from Removable Media | Exfiltration Over Bluetooth | Junk Data | 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 Injection11 | Security Account Manager | System Information 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) | DLL Side-Loading1 | NTDS | System Network Configuration Discovery | Distributed Component Object Model | Input Capture | Scheduled Transfer | Protocol Impersonation | SIM Card Swap | Carrier Billing Fraud |
Behavior Graph |
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Screenshots |
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Thumbnails
This section contains all screenshots as thumbnails, including those not shown in the slideshow.
Antivirus, Machine Learning and Genetic Malware Detection |
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Initial Sample |
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Source | Detection | Scanner | Label | Link |
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100% | Avira | HEUR/AGEN.1108168 | ||
100% | Joe Sandbox ML |
Dropped Files |
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No Antivirus matches |
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Unpacked PE Files |
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No Antivirus matches |
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Domains |
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No Antivirus matches |
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URLs |
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Source | Detection | Scanner | Label | Link |
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0% | Avira URL Cloud | safe | ||
0% | URL Reputation | safe | ||
0% | URL Reputation | safe | ||
0% | URL Reputation | safe | ||
0% | URL Reputation | safe | ||
0% | URL Reputation | safe | ||
0% | URL Reputation | safe | ||
0% | URL Reputation | safe | ||
0% | URL Reputation | safe |
Domains and IPs |
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Contacted Domains |
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No contacted domains info |
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URLs from Memory and Binaries |
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Name | Source | Malicious | Antivirus Detection | Reputation |
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false |
| low | ||
false |
| unknown | ||
false |
| unknown |
Contacted IPs |
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No contacted IP infos |
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General Information |
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Joe Sandbox Version: | 32.0.0 Black Diamond |
Analysis ID: | 403758 |
Start date: | 04.05.2021 |
Start time: | 11:41:53 |
Joe Sandbox Product: | CloudBasic |
Overall analysis duration: | 0h 5m 0s |
Hypervisor based Inspection enabled: | false |
Report type: | light |
Sample file name: | 21a5f8d0000.dll |
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: | 29 |
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: |
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Analysis Mode: | default |
Analysis stop reason: | Timeout |
Detection: | MAL |
Classification: | mal60.troj.winDLL@9/1@0/0 |
EGA Information: | Failed |
HDC Information: | Failed |
HCA Information: |
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Cookbook Comments: |
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Simulations |
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Behavior and APIs |
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Time | Type | Description |
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11:44:14 | API Interceptor |
Joe Sandbox View / Context |
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Created / dropped Files |
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Process: | C:\Program Files\Windows Defender\MpCmdRun.exe |
File Type: | |
Category: | modified |
Size (bytes): | 906 |
Entropy (8bit): | 3.1320890800881007 |
Encrypted: | false |
SSDEEP: | 12:58KRBubdpkoF1AG3rPWKk9+MlWlLehB4yAq7ejCMWH:OaqdmuF3rw+kWReH4yJ7M+ |
MD5: | CE1CC265AB67E3C997C2BD8A51DE492A |
SHA1: | 90E8A24EC0C49E555721FDE5A4000E1FC5FC867E |
SHA-256: | E907A66E7EFFA5A9D710327C455CA0B3DD561E0146EA6F0B9A33682AC8CA4173 |
SHA-512: | 384559B9381A90DB5729E2CE6B6D924D6E87C30991F4B7EAE92A6859D0D17C7D483733D3769F3220797381321D4DCE8210B4601DACF73FBDBCFBEC23335CADB4 |
Malicious: | false |
Reputation: | low |
Preview: |
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Static File Info |
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General | |
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File type: | |
Entropy (8bit): | 6.331169087847959 |
TrID: |
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File name: | 21a5f8d0000.dll |
File size: | 223744 |
MD5: | b8c176dc8ab0d768031014f95b8816e8 |
SHA1: | 97826adb6aac6340a74ca024a65065fa6fdb21ca |
SHA256: | cc79e66b24bfca1cd0ef27c63921737786dcdae02f871279800ea2c82939721a |
SHA512: | 0e2f907a21f245784ea260c11b2eff428e892fc0c4b3594a0eac59cff127129896227676e4cc73be9af003ce5b2b496b3148119f1d7be35439e157aec53a2b44 |
SSDEEP: | 3072:fWLHqJ4VtWYQUVpsPHQqdPFQ6l7Bz9DHzcUvNfxYPr9fGWg+Bm5kf7JDLm:4qO/rsPHN7Q6l7Bz9zhvNJYPrg1QNL |
File Content Preview: | MZ......................................................................................................................................................................................................................................................PE..d.. |
File Icon |
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Icon Hash: | 74f0e4ecccdce0e4 |
Static PE Info |
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General | |
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Entrypoint: | 0x1800080e4 |
Entrypoint Section: | .text |
Digitally signed: | false |
Imagebase: | 0x180000000 |
Subsystem: | windows gui |
Image File Characteristics: | EXECUTABLE_IMAGE, DLL, LARGE_ADDRESS_AWARE |
DLL Characteristics: | |
Time Stamp: | 0x60804A27 [Wed Apr 21 15:52:07 2021 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: |
Entrypoint Preview |
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Instruction |
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inc eax |
push ebx |
dec eax |
sub esp, 20h |
test edx, edx |
mov ebx, 00000001h |
je 00007F9EF0987E76h |
cmp edx, ebx |
jne 00007F9EF0987E81h |
mov eax, ebx |
lock xadd dword ptr [0002B8AFh], eax |
add eax, ebx |
cmp eax, ebx |
jne 00007F9EF0987E71h |
dec ecx |
mov edx, eax |
call 00007F9EF099AC22h |
test eax, eax |
je 00007F9EF0987E65h |
xor ebx, ebx |
jmp 00007F9EF0987E61h |
lock add dword ptr [0002B891h], FFFFFFFFh |
jne 00007F9EF0987E57h |
call 00007F9EF0999CE3h |
mov eax, ebx |
dec eax |
add esp, 20h |
pop ebx |
ret |
int3 |
int3 |
dec eax |
mov dword ptr [esp+08h], ebx |
dec eax |
mov dword ptr [esp+10h], ebp |
dec eax |
mov dword ptr [esp+18h], esi |
push edi |
dec eax |
sub esp, 20h |
cmp dword ptr [0002BE31h], 00000000h |
inc ecx |
mov ebx, ecx |
dec ecx |
mov esi, eax |
dec eax |
mov eax, edx |
je 00007F9EF0987EF3h |
xor edx, edx |
dec eax |
mov ecx, eax |
call 00007F9EF0982475h |
dec eax |
mov ecx, dword ptr [0002B83Dh] |
dec esp |
lea eax, dword ptr [ebx+01h] |
xor edx, edx |
dec eax |
mov ebp, eax |
call dword ptr [00024F26h] |
dec eax |
test eax, eax |
dec eax |
mov edi, eax |
je 00007F9EF0987EC7h |
dec esp |
mov eax, ebx |
dec eax |
mov edx, esi |
dec eax |
mov ecx, eax |
call 00007F9EF099F36Bh |
dec eax |
lea ecx, dword ptr [0002BDB9h] |
mov byte ptr [ebx+edi], 00000000h |
call dword ptr [0002504Fh] |
lock add dword ptr [0002BDCFh], 01h |
dec eax |
lea ecx, dword ptr [00000000h] |
Data Directories |
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Name | Virtual Address | Virtual Size | Is in Section |
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IMAGE_DIRECTORY_ENTRY_EXPORT | 0x31b10 | 0x38 | .rdata |
IMAGE_DIRECTORY_ENTRY_IMPORT | 0x30a20 | 0x3c | .rdata |
IMAGE_DIRECTORY_ENTRY_RESOURCE | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_EXCEPTION | 0x34000 | 0x17ac | .pdata |
IMAGE_DIRECTORY_ENTRY_SECURITY | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_BASERELOC | 0x39000 | 0x344 | .reloc |
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 | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_IAT | 0x2d000 | 0x530 | .rdata |
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT | 0x2eda4 | 0x1e0 | .rdata |
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_RESERVED | 0x0 | 0x0 |
Sections |
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Name | Virtual Address | Virtual Size | Raw Size | Xored PE | ZLIB Complexity | File Type | Entropy | Characteristics |
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.text | 0x1000 | 0x2ba46 | 0x2bc00 | False | 0.568303571429 | data | 6.33861296477 | IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ |
.rdata | 0x2d000 | 0x4b48 | 0x4c00 | False | 0.403114720395 | data | 5.25264814147 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ |
.data | 0x32000 | 0x1f88 | 0x1a00 | False | 0.307992788462 | lif file | 3.73553845524 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ |
.pdata | 0x34000 | 0x17ac | 0x1800 | False | 0.53857421875 | data | 5.30366145469 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ |
.bss | 0x36000 | 0x2148 | 0x2200 | False | 0.427504595588 | data | 4.96451183531 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ |
.reloc | 0x39000 | 0x1000 | 0xa00 | False | 0.458984375 | data | 4.2959680462 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ |
Network Behavior |
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No network behavior found |
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Code Manipulations |
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Statistics |
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Behavior |
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Click to jump to process
System Behavior |
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General |
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Start time: | 11:42:45 |
Start date: | 04/05/2021 |
Path: | C:\Windows\System32\loaddll64.exe |
Wow64 process (32bit): | false |
Commandline: | |
Imagebase: | 0x7ff69d4e0000 |
File size: | 140288 bytes |
MD5 hash: | A84133CCB118CF35D49A423CD836D0EF |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | moderate |
General |
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Start time: | 11:42:45 |
Start date: | 04/05/2021 |
Path: | C:\Windows\System32\cmd.exe |
Wow64 process (32bit): | false |
Commandline: | |
Imagebase: | 0x7ff7eef80000 |
File size: | 273920 bytes |
MD5 hash: | 4E2ACF4F8A396486AB4268C94A6A245F |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |
General |
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Start time: | 11:42:45 |
Start date: | 04/05/2021 |
Path: | C:\Windows\System32\rundll32.exe |
Wow64 process (32bit): | false |
Commandline: | |
Imagebase: | 0x7ff6c6b80000 |
File size: | 69632 bytes |
MD5 hash: | 73C519F050C20580F8A62C849D49215A |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |
General |
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Start time: | 11:42:45 |
Start date: | 04/05/2021 |
Path: | C:\Windows\System32\rundll32.exe |
Wow64 process (32bit): | false |
Commandline: | |
Imagebase: | 0x7ff6c6b80000 |
File size: | 69632 bytes |
MD5 hash: | 73C519F050C20580F8A62C849D49215A |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |
General |
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Start time: | 11:44:13 |
Start date: | 04/05/2021 |
Path: | C:\Program Files\Windows Defender\MpCmdRun.exe |
Wow64 process (32bit): | false |
Commandline: | |
Imagebase: | 0x7ff6cf3a0000 |
File size: | 455656 bytes |
MD5 hash: | A267555174BFA53844371226F482B86B |
Has elevated privileges: | true |
Has administrator privileges: | false |
Programmed in: | C, C++ or other language |
Reputation: | high |
General |
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Start time: | 11:44:13 |
Start date: | 04/05/2021 |
Path: | C:\Windows\System32\conhost.exe |
Wow64 process (32bit): | false |
Commandline: | |
Imagebase: | 0x7ff7ecfc0000 |
File size: | 625664 bytes |
MD5 hash: | EA777DEEA782E8B4D7C7C33BBF8A4496 |
Has elevated privileges: | true |
Has administrator privileges: | false |
Programmed in: | C, C++ or other language |
Reputation: | high |
Disassembly |
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Code Analysis |
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