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Windows
Analysis Report
Confirm!!.exe
Overview
General Information
Detection
FormBook, PureLog Stealer
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Machine Learning detection for sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if the current process is being debugged
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found decision node followed by non-executed suspicious APIs
Found inlined nop instructions (likely shell or obfuscated code)
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- Confirm!!.exe (PID: 3604 cmdline:
"C:\Users\ user\Deskt op\Confirm !!.exe" MD5: 1CD8AC8C84B05076F4A7516064714DE3) - Confirm!!.exe (PID: 2036 cmdline:
"C:\Users\ user\Deskt op\Confirm !!.exe" MD5: 1CD8AC8C84B05076F4A7516064714DE3) - Confirm!!.exe (PID: 4548 cmdline:
"C:\Users\ user\Deskt op\Confirm !!.exe" MD5: 1CD8AC8C84B05076F4A7516064714DE3) - explorer.exe (PID: 4004 cmdline:
C:\Windows \Explorer. EXE MD5: 662F4F92FDE3557E86D110526BB578D5) - autoconv.exe (PID: 2120 cmdline:
"C:\Window s\SysWOW64 \autoconv. exe" MD5: A705C2ACED7DDB71AFB87C4ED384BED6) - systray.exe (PID: 6960 cmdline:
"C:\Window s\SysWOW64 \systray.e xe" MD5: 28D565BB24D30E5E3DE8AFF6900AF098) - cmd.exe (PID: 7044 cmdline:
/c del "C: \Users\use r\Desktop\ Confirm!!. exe" MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 6548 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Formbook, Formbo | FormBook contains a unique crypter RunPE that has unique behavioral patterns subject to detection. It was initially called "Babushka Crypter" by Insidemalware. |
{"C2 list": ["www.qfs-capital.com/he2a/"], "decoy": ["connectioncompass.store", "zekicharge.com", "dp77.shop", "guninfo.guru", "mamaeconomics.net", "narcisme.coach", "redtopassociates.com", "ezezn.com", "theoregondog.com", "pagosmultired.online", "emsculptcenterofne.com", "meet-friends.online", "pf326.com", "wealthjigsaw.xyz", "arsajib.com", "kickassholdings.online", "avaturre.biz", "dtslogs.com", "lb92.tech", "pittalam.com", "cyberlegion.group", "24eu-ru-startup.xyz", "theaustralianbrisketboard.com", "bavrnimn.site", "xn--groupe-gorg-lbb.com", "hg08139.com", "myjbtest.net", "cyg8wm3zfb.xyz", "mimi2023.monster", "ruixiangg.com", "smokintires.net", "out-boundlabs.net", "matrix-promotions.com", "botfolk.com", "6o20r.beauty", "cpohlelaw.com", "zamupoi.fun", "eletrobrasilvendas.com", "desire-dating.com", "678ap.com", "bioprost.club", "hfaer4.xyz", "yuwangjing.com", "359brigham.com", "misstamar.mobi", "lucasbrownviolinstudio.com", "mybet668.com", "giuila.online", "mathews.buzz", "dcmdot.com", "epeople.store", "totneshotdesk.com", "jaehub.com", "notbokin.online", "trongiv.xyz", "adept-expert-comptable.net", "4tvaccounting.com", "saledotfate.live", "canadiantrafficmanagement.net", "oktravelhi.com", "taylorranchtrail.com", "tempahwebsites.com", "b-store.shop", "paintellensburg.com"]}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Formbook | detect Formbook in memory | JPCERT/CC Incident Response Group |
| |
Click to see the 28 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Formbook | detect Formbook in memory | JPCERT/CC Incident Response Group |
| |
Click to see the 15 entries |
⊘No Sigma rule has matched
Timestamp: | 05/04/24-02:54:58.740023 |
SID: | 2031412 |
Source Port: | 49707 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 05/04/24-02:55:20.994007 |
SID: | 2031412 |
Source Port: | 49708 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Click to jump to signature section
Show All Signature Results
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Source: | Code function: | 3_2_0040E467 | |
Source: | Code function: | 6_2_0098E467 |
Networking |
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Source: | Code function: | 4_2_0E2B6F82 |
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