MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 38c29f9b66d8b8d0b605a7d6fe3e885dc9f3e4e22ca226c83cddb3004332bf2a. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
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SHA256 hash: 38c29f9b66d8b8d0b605a7d6fe3e885dc9f3e4e22ca226c83cddb3004332bf2a
SHA3-384 hash: 8d33da9c5ca791fdc0d18c6d758d37ffaeec70de17a4c265747f598329339ec1c65c152459e53a41bbbb4aefd7541dfb
SHA1 hash: 4e63d8489227d199795c553864f078b727c3b19e
MD5 hash: cc5965ca168105bcc69cbcbf455cf179
humanhash: cola-sweet-helium-queen
File name:00340434296886123692.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:630'272 bytes
First seen:2021-09-30 17:00:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'632 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:Uz/2zUNi+hBr7IUA41NjlNojF6ztYQBrNrrcw4o4zc:UjhNi+hBr8UA41tl24t1rrUw
TLSH T19BD49DEE1EB457CBFB5E02F8F5742B8813BA9024D99BF2C2CA45B0B351367544920DE6
File icon (PE):PE icon
dhash icon ae53d212daccccca (8 x Formbook, 4 x AsyncRAT, 1 x NetWire)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
180
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
00340434296886123692.exe
Verdict:
Malicious activity
Analysis date:
2021-09-30 20:23:22 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/23a7e53b-526c-400d-acbd-618b75508b5a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/193746/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1048-1.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Scr.Malcodegdn30.14006.UNOFFICIAL
Create hunting rule

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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b9e1daa1-abee-4040-8716-5d027ea11b23
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/862122
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
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
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
Uses ipconfig to lookup or modify the Windows network settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 494548 Sample: 00340434296886123692.exe Startdate: 30/09/2021 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 8 other signatures 2->42 10 00340434296886123692.exe 3 2->10         started        process3 file4 28 C:\Users\...\00340434296886123692.exe.log, ASCII 10->28 dropped 56 Tries to detect virtualization through RDTSC time measurements 10->56 14 00340434296886123692.exe 10->14         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 17 explorer.exe 14->17 injected process8 dnsIp9 30 momochan-hakata.com 183.181.96.71, 49862, 80 SAKURA-CSAKURAInternetIncJP Japan 17->30 32 www.omnicomtrans.com 35.215.142.75, 49867, 80 GOOGLE-2US United States 17->32 34 2 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 46 Uses ipconfig to lookup or modify the Windows network settings 17->46 21 ipconfig.exe 17->21         started        signatures10 process11 signatures12 48 Self deletion via cmd delete 21->48 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/38c29f9b66d8b8d0b605a7d6fe3e885dc9f3e4e22ca226c83cddb3004332bf2a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-28 09:46:15 UTC
AV detection:
15 of 45 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hdbj7g3g3c4nbnqfu7lp4puilxe7hzhcfsrcnsb43wzqaqzsx4va._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:wrn9 rat spyware stealer trojan
Link:
https://tria.ge/reports/210930-vh1sesabf9/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.textureysxzqe.xyz/wrn9/
Unpacked files
SH256 hash:
26d32b4aa1227effb27d9da720c2f4b33c57366406f98b4de7bd4115d2421124
MD5 hash:
49c75d8f9b480b7da9e10910c563d7b9
SHA1 hash:
07c588db4c59adce5c87a72035e031559181edd5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/972c2501-8028-46b1-8667-e372343782af/
Parent samples :
38c29f9b66d8b8d0b605a7d6fe3e885dc9f3e4e22ca226c83cddb3004332bf2a
ca068f5712b190934cbe787dc667690b4506bae94d8d208638d1cadb243d3cfb
SH256 hash:
1a408df6d9ec9ac9114c2728681051b3b5a13c96f2932c3d78ab0f93a6b326bf
MD5 hash:
f46be890058958d6e16a0b1d389d5505
SHA1 hash:
668b760cf550589d2b4c45c7778e9716787fbd7e
Link:
https://www.unpac.me/results/972c2501-8028-46b1-8667-e372343782af/
SH256 hash:
6a671abf66304301602b4afd0902840bc3915455cffc58d8916eaa693abe33ec
MD5 hash:
681eca96e4e7b513317178dc7065ef39
SHA1 hash:
24af82015bc57d125f1ccb759840118b2283d1dc
Link:
https://www.unpac.me/results/972c2501-8028-46b1-8667-e372343782af/
SH256 hash:
1140499826efdb4602cc1a87bbc22d1df4b4977b46234da3beb9a99d38c8c9c6
MD5 hash:
52758404f3a08b9429372bf267ec926b
SHA1 hash:
0cb9196fae5dcf8f9b0118373aceade919c37bc3
Link:
https://www.unpac.me/results/972c2501-8028-46b1-8667-e372343782af/
SH256 hash:
38c29f9b66d8b8d0b605a7d6fe3e885dc9f3e4e22ca226c83cddb3004332bf2a
MD5 hash:
cc5965ca168105bcc69cbcbf455cf179
SHA1 hash:
4e63d8489227d199795c553864f078b727c3b19e
Link:
https://www.unpac.me/results/972c2501-8028-46b1-8667-e372343782af/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/38c29f9b66d8b8d0b605a7d6fe3e885dc9f3e4e22ca226c83cddb3004332bf2a

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
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe 38c29f9b66d8b8d0b605a7d6fe3e885dc9f3e4e22ca226c83cddb3004332bf2a

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/193746/

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