MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 3a90232b1cc562fa333d9b401a6160d5de5b6be886768fae62bdae3d42ea42f6. 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: 11
| SHA256 hash: | 3a90232b1cc562fa333d9b401a6160d5de5b6be886768fae62bdae3d42ea42f6 |
|---|---|
| SHA3-384 hash: | f0de64ebdd6b949e2055c0c11b07b02a62641ed882ab51da3b97bb9176ebaeafc202303be812617f369a13eb4908097c |
| SHA1 hash: | c38ce84cedf4569f0510892b7d04e53ae6b2a986 |
| MD5 hash: | 817e0e2fcd8e6a5d7571bd135dc92ac6 |
| humanhash: | twenty-bulldog-sweet-friend |
| File name: | 817e0e2fcd8e6a5d7571bd135dc92ac6 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 465'408 bytes |
| First seen: | 2021-09-20 15:50:13 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 | 12288:k6j/3dWHCM2K4Cy3hcZyfw9NzKA9/1BcHjIQsb+:rj/n3Csht0d/1yH |
| Threatray | 9'468 similar samples on MalwareBazaar |
| TLSH | T12FA4DF343AEA9019F173AFB95BE475969A7FF7633607A45D108103CA0613F80DED1A3A |
| Reporter |  zbetcheckin |
| Tags: | 32 exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
171
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
817e0e2fcd8e6a5d7571bd135dc92ac6
Verdict:
Malicious activity
Analysis date:
2021-09-20 15:52:41 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: CMSTP Execution Process Creation
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Detection:
formbook
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-09-16 07:23:20 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
5/5
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 9'458 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:fzsg rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.smallandsmart-living.com/fzsg/
Unpacked files
SH256 hash:
5b4bc65f7ec26d65086afbeb4f7a4bd63731ac92c74d5790561a2bf2a40ef458
MD5 hash:
376e28f4231093c0b239d4c0e62bbbbf
SHA1 hash:
5b7b3e6a3526b4f81cabb2f65977ce4aac497b8f
Detections:
win_formbook_g0
win_formbook_auto
SH256 hash:
ad4a7895d529d5164302bb88596964ab42ff125bf0f5544418c80b6d438cb587
MD5 hash:
43ababb6b0a02907aad43084f12b10d9
SHA1 hash:
b60ba705891d5a666d64300181b475a46714ffa8
SH256 hash:
f3199371d9792598c3cb0baac8e281eccb704e7af520b933b2a8f9788d6cca1e
MD5 hash:
b6b94309731bb2555d03ad91355db1bf
SHA1 hash:
1e9597d1edb11ae8922c9458b3877d539c84618e
SH256 hash:
3a90232b1cc562fa333d9b401a6160d5de5b6be886768fae62bdae3d42ea42f6
MD5 hash:
817e0e2fcd8e6a5d7571bd135dc92ac6
SHA1 hash:
c38ce84cedf4569f0510892b7d04e53ae6b2a986
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
YARA Signatures
MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.
| Rule name: | pe_imphash |
|---|
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
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