MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8ca4a5887d8506ae275cdc9d9ba89dab07e2997435435a1f0bd111f78ad0a382. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
FormBook
Vendor detections: 9
| SHA256 hash: | 8ca4a5887d8506ae275cdc9d9ba89dab07e2997435435a1f0bd111f78ad0a382 |
|---|---|
| SHA3-384 hash: | 5e667e3ff046a2b8e972a580c2f2ed1087440d2de0a5ea22228ec093a0493b5ee73115459086b6cd8a7747d67e85c8df |
| SHA1 hash: | c66effe69ee57be7637d6133e30f7c08a9b5a2d6 |
| MD5 hash: | a04ca4b29a48705a10d05e63492c397b |
| humanhash: | golf-enemy-eight-five |
| File name: | bSpRY88fjIgazcB.exe |
| Download: | download sample |
| Signature | FormBook |
| File size: | 1'011'200 bytes |
| First seen: | 2020-11-06 07:34:52 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 24576:KyC+Z92gSgJ5BRKztN8ayhcdedv8/1GBh+azsf:K589jS05BRK5OhcdedvKGdzw |
| Threatray | 2'869 similar samples on MalwareBazaar |
| TLSH | AD25AEFA6272D66EC80F05FFF8CB25618399CF2D58FC804672F5B11912786C951AC78A |
| Reporter |  abuse_ch |
| Tags: | exe FormBook Yahoo |
abuse_ch
Malspam distributing FormBook:HELO: sonic304-23.consmr.mail.gq1.yahoo.com
Sending IP: 98.137.68.204
From: Ali joy <joyali124@yahoo.com.sg>
Subject: FW: Payment Transfer
Attachment: HENB790.rar (contains "bSpRY88fjIgazcB.exe")
Intelligence
File Origin
# of uploads :
1
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Detected FormBook malware
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Steal Google chrome login data
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected FormBook
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Infostealer.Stelega
Status:
Malicious
First seen:
2020-11-06 04:19:06 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
formbook
netwirerc
Similar samples:
+ 2'859 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook rat spyware stealer trojan
Behaviour
Creates scheduled task(s)
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.leeaross.com/k8b/
Unpacked files
SH256 hash:
8ca4a5887d8506ae275cdc9d9ba89dab07e2997435435a1f0bd111f78ad0a382
MD5 hash:
a04ca4b29a48705a10d05e63492c397b
SHA1 hash:
c66effe69ee57be7637d6133e30f7c08a9b5a2d6
SH256 hash:
31ce938626ccfb399fe1696710caf46d7ae9eb598b9d7d2aad719b594658469b
MD5 hash:
0aebe46040ceb011e78506d4985fe3de
SHA1 hash:
218ac1e7b14a66c604ec3042f8486bed9cd4c2c1
SH256 hash:
dedb3b9875cb5ab169cd750811f9748e042edd317af3a3426fb12c113d56e38e
MD5 hash:
cefc352d5db27475cf4d8fdf3cfce03b
SHA1 hash:
f8af58dc8ab9265ef3f8ed7082beb87c72acc317
SH256 hash:
54121628dcacfe91d7d106a9e116178493f881862046374570813d806f6c0200
MD5 hash:
e21ae100a69672a4079f73a81b467e49
SHA1 hash:
41ebaa4c5b0df6d44451ea3b15d97ed355c621f0
Detections:
win_formbook_g0
win_formbook_auto
Please note that we are no longer able to provide a coverage score for Virus Total.
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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