MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81a32d1f1e2cdaad0988595ceef9af6fb40e7f2f7d08d7794a4fa7e1b09d37e8. 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: 17


Intelligence 17 IOCs YARA 2 File information Comments
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SHA256 hash: 81a32d1f1e2cdaad0988595ceef9af6fb40e7f2f7d08d7794a4fa7e1b09d37e8
SHA3-384 hash: 1372c75717da7812dc926006b3c188a491d224a172ea106d9afbfabae7979839f6c3d6ef5910a9914753c72545ad4bd2
SHA1 hash: 887b2458dd8b71333cdae2f0bb2f41090f2e4aea
MD5 hash: 30b4fc49dd45819a236f6f572166b411
humanhash: golf-georgia-delaware-pluto
File name:RFQ-22-03795.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:791'552 bytes
First seen:2022-04-28 23:23:25 UTC
Last seen:2022-04-28 23:34:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:iQvnOJ+/BjiC/PNFaFrF7b5qZrSPkPZuTkQt:JvnC+/VFNFgr5terG
Threatray 12'629 similar samples on MalwareBazaar
TLSH T1A1F412427A94C7B8E93C5FB37F97900D97237CF4B952D88AAED3F685087822119512B3
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
293
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
RFQ-22-03795.exe
Verdict:
Malicious activity
Analysis date:
2022-04-29 03:10:05 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/a66ef1fb-aa1c-4b5b-99f8-dfac2794d5ff

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/267627/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.48948066.27837.336.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/626b2214bc7a5945266fb317/reports/dfb62695-be81-4990-9141-068eaa213127/overview
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6aa0931e-cb25-4937-b516-12e26fe3d5ff
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/985133
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Suspicious Characters in CommandLine
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 617629 Sample: RFQ-22-03795.exe Startdate: 29/04/2022 Architecture: WINDOWS Score: 100 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 7 other signatures 2->42 10 RFQ-22-03795.exe 3 2->10         started        process3 file4 30 C:\Users\user\...\RFQ-22-03795.exe.log, ASCII 10->30 dropped 56 Tries to detect virtualization through RDTSC time measurements 10->56 58 Injects a PE file into a foreign processes 10->58 14 RFQ-22-03795.exe 10->14         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 17 explorer.exe 14->17 injected process8 dnsIp9 32 www.shoptruongstar.info 188.114.96.7, 49809, 80 CLOUDFLARENETUS European Union 17->32 34 www.509asffgcvvd.xyz 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 46 Performs DNS queries to domains with low reputation 17->46 21 systray.exe 17->21         started        24 autofmt.exe 17->24         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 26 cmd.exe 1 21->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/81a32d1f1e2cdaad0988595ceef9af6fb40e7f2f7d08d7794a4fa7e1b09d37e8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-28 17:35:50 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qgrs2hy6ftnk2cmilfoo56npn62a47zppueno6kkj6t6dme5g7ua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2c9a7034a9d5463d3c4e91dd5b652c91e906864b1731933397b41662bf85d0d2
Formbook
3859da72cd34fc9b4ebe2ff100a3d888845836f4945bf2bcdfb83d5d0d16508a
Formbook
67435f426cc9f3036d38b4af360f5fc7a4ea547a3e93eccbdf0425718e174dd8
Formbook
a9915e261e819e5388755f6e20a93b55c096eb7b81b930c7212a77be734a97b2
Formbook
b0f1a1bfefa0359f8ef181219a761192e70a2d8ec0dd07692ffe24814f50c11d
Formbook
c0760105fed05b99698c3f1e5bb6ed6e2e9b386315d0e187cd075b8ed5ea7fe5
Formbook
e51d07f5a5a73b65e0ddd7f2b94fa87a3fede71fbb4e4b35c57b9fc56dd198ee
Formbook
e677af4720b0b6402c8b677265968541dfa6b57f12578f7701ac840bd1f0889f
Formbook
+ 12'619 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:amdf rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220428-3dn7tscdaj/
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 WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
672d7f465410e694e1440c445c7e327cc45b9b85b7cff8cbcee1037f462da326
MD5 hash:
f585b0d027c6b12b0fb8f1b9854e796d
SHA1 hash:
14cfb5cb7dfdd5d87a4cdace85b771d17e3a6dac
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/459609df-b3d1-49bc-a565-2d05d98f7250/
Parent samples :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 hash:
92fc621e886ad486195efe1b074a5186c27599e3dd4d71c72cae3078b8660ae2
MD5 hash:
e80503550a2aa077f62f09c7dc6be7e4
SHA1 hash:
f93e86c149eac50b611a1f9a7b59f5d81026262c
Link:
https://www.unpac.me/results/459609df-b3d1-49bc-a565-2d05d98f7250/
SH256 hash:
7bad6a356e7c4dc1db9ca467e19df25c4b528332cec02825b5e115ff57212d67
MD5 hash:
b27ef64aec0b2f621f93e9ae4578794c
SHA1 hash:
a856aeaf6e04d14cb20b23518b7eca0a83e8f821
Link:
https://www.unpac.me/results/459609df-b3d1-49bc-a565-2d05d98f7250/
SH256 hash:
a01e041a06409c07d721a7448de83c41a17d4fa97926ec57874305054eea440c
MD5 hash:
46352f248b42849ce99cdbb212e9ee17
SHA1 hash:
3134dda6b21ae46c2e8030afb664cf7d516c3570
Link:
https://www.unpac.me/results/459609df-b3d1-49bc-a565-2d05d98f7250/
SH256 hash:
81a32d1f1e2cdaad0988595ceef9af6fb40e7f2f7d08d7794a4fa7e1b09d37e8
MD5 hash:
30b4fc49dd45819a236f6f572166b411
SHA1 hash:
887b2458dd8b71333cdae2f0bb2f41090f2e4aea
Link:
https://www.unpac.me/results/459609df-b3d1-49bc-a565-2d05d98f7250/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/81a32d1f1e2c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/81a32d1f1e2cdaad0988595ceef9af6fb40e7f2f7d08d7794a4fa7e1b09d37e8

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
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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 81a32d1f1e2cdaad0988595ceef9af6fb40e7f2f7d08d7794a4fa7e1b09d37e8

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/267627/

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