MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 841f58249aa46e1ee3675636da9cac3894940ab465579bc001eb328d679a586d. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 841f58249aa46e1ee3675636da9cac3894940ab465579bc001eb328d679a586d
SHA3-384 hash: 0aac7b557d774e929805240c187955a75c1db82548156fc5a901666420a55373f59fcbf3b31a1092a8999f1265a9707d
SHA1 hash: bc26c2d1aa64be96980165158258632226564af9
MD5 hash: 988f2d08a7b1ec95720191ee0d055af7
humanhash: oven-early-sweet-nitrogen
File name:Details For Reconfirmation MTC101.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:878'080 bytes
First seen:2022-11-15 14:17:44 UTC
Last seen:2022-11-15 20:04:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'207 x SnakeKeylogger)
ssdeep 12288:LT1AxJU2W0prdkR0Pcm6F3YEm3OgKwtadvA9v9xyjpv:LxAk2W0pA0wFIEaXadvh1
Threatray 17'389 similar samples on MalwareBazaar
TLSH T1CB152A2935BCF602EE36ABE70DE69A0BCB701141122EC1060D5A36DFE975F763D8950B
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13097/50/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
194
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Details For Reconfirmation MTC101.exe
Verdict:
Malicious activity
Analysis date:
2022-11-15 14:19:18 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/9c1e25d0-ed12-4b7d-9cb1-e75f960c0ae2

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/334337/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.44597.8596.3438.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63739f9c07c3f5e84a0145d0/reports/ffcfa2a3-8bd5-43e2-869c-b380da459eb2/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/1e806937-5987-447c-bfcb-ffc782097df4
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1114158
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 746854 Sample: Details For Reconfirmation ... Startdate: 15/11/2022 Architecture: WINDOWS Score: 100 64 Malicious sample detected (through community Yara rule) 2->64 66 Antivirus / Scanner detection for submitted sample 2->66 68 Sigma detected: Scheduled temp file as task from temp location 2->68 70 11 other signatures 2->70 10 Details For Reconfirmation MTC101.exe 7 2->10         started        14 hptcuzmOopqpT.exe 5 2->14         started        process3 file4 48 C:\Users\user\AppData\...\hptcuzmOopqpT.exe, PE32 10->48 dropped 50 C:\...\hptcuzmOopqpT.exe:Zone.Identifier, ASCII 10->50 dropped 52 C:\Users\user\AppData\Local\Temp\tmp6E7.tmp, XML 10->52 dropped 54 Details For Reconf...tion MTC101.exe.log, ASCII 10->54 dropped 78 Adds a directory exclusion to Windows Defender 10->78 80 Injects a PE file into a foreign processes 10->80 16 Details For Reconfirmation MTC101.exe 10->16         started        19 powershell.exe 21 10->19         started        21 schtasks.exe 1 10->21         started        82 Antivirus detection for dropped file 14->82 84 Multi AV Scanner detection for dropped file 14->84 86 Machine Learning detection for dropped file 14->86 88 Tries to detect virtualization through RDTSC time measurements 14->88 23 hptcuzmOopqpT.exe 14->23         started        25 schtasks.exe 1 14->25         started        27 hptcuzmOopqpT.exe 14->27         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 16->56 58 Maps a DLL or memory area into another process 16->58 60 Sample uses process hollowing technique 16->60 62 Queues an APC in another process (thread injection) 16->62 29 explorer.exe 16->29 injected 31 conhost.exe 19->31         started        33 conhost.exe 21->33         started        35 conhost.exe 25->35         started        process8 process9 37 cmmon32.exe 29->37         started        40 colorcpl.exe 29->40         started        42 autofmt.exe 29->42         started        signatures10 72 Modifies the context of a thread in another process (thread injection) 37->72 74 Maps a DLL or memory area into another process 37->74 76 Tries to detect virtualization through RDTSC time measurements 37->76 44 cmd.exe 1 37->44         started        process11 process12 46 conhost.exe 44->46         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/841f58249aa46e1ee3675636da9cac3894940ab465579bc001eb328d679a586d/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-11-14 13:54:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
26
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qqpvqje2urxb5y3hky3nvhfmhckjicvumvlzxqab5mzi2z42lbwq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
09037aa0be8db35b9e9fdebbcf4b513fc3837825d0114474ecbd396e698c5f8d
Formbook
3a22fb14f837309023971bf41b88cfc9b3ae7d9db44da63257d36d73dbd716ad
Formbook
4143f0d71056023faf4ba8117632af6086496686f1ef88da843c7252d7e1eb97
Formbook
4408ca4867bf10664da86178ed9d1730f0b405964f6bcd1c5ad87353ac1f5dca
Formbook
a72d23291c793083519a7095c31a259f88b62f15759f7988894bf6b99903cc23
Formbook
d6542847f6e753bcb676e6d891d85d88ff5a38fe7150975f53ac5863922a7667
Formbook
d93ce6e65ad61e6e424cc6bb2e48eebb312ffe7ff11585bba086c16550a466e6
Formbook
e12e92ded58d05cf87a0cdf4323859145f5aa09da69e4dd3ab622e65a9888587
Formbook
fd8ee1def801bc959d1fefac476f1adea2c6d66f21fe1c144e53e4b1fc92728c
Formbook
+ 17'379 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:t36t rat spyware stealer trojan
Link:
https://tria.ge/reports/221115-rl99gsaa9t/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1b7f8c64-9f99-4e6d-8f05-4eb09568bac6
Unpacked files
SH256 hash:
b981f7895c4e10ed2107ac0fa2142827b78c86eacbec2211395e6ca7f4cf7f70
MD5 hash:
1ca046f61b8db275232d37fec4c5255f
SHA1 hash:
7d544077cda3cbb6aeb3a5d60dad3b127b5944b0
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/2c72377f-afc8-4cac-834d-1d47d09b046d/
Parent samples :
6b90f7fe7abcb028f3f1ad8173f22d11b950714483ab6cdcb2f0a37961a30a51
4408ca4867bf10664da86178ed9d1730f0b405964f6bcd1c5ad87353ac1f5dca
93c85b2f72de4a9ddcab5f1ecf176830c8b3941c865a92f1c42aceea21b0f4de
22a0ce1fbf304b11510e89f1db8124bf84c59049c919c7b6bbce222db99bf014
93e9e99eb9d74a0cfa3cec7fea4a663b9ad5e8fe4e6ba38bf597a902ce592e1e
841f58249aa46e1ee3675636da9cac3894940ab465579bc001eb328d679a586d
476cfcd8e4efbaad00e44089bfe1eab950cd627656f960b74a1dce1f9e5686dc
6f22c078ac85a58a121a9f601bb88bbdb1664bee8845c5b66f42f1c23d13a5ef
SH256 hash:
86242054bc69ec06de299d32af7dff5e95cc82aeb504ae1236d41ecb136e9877
MD5 hash:
45bc6e835fe344d069dc4aea9e1bdbba
SHA1 hash:
c2fd6c7e6912ec69027ebef6813dc6ee9e5bad7d
Link:
https://www.unpac.me/results/2c72377f-afc8-4cac-834d-1d47d09b046d/
SH256 hash:
560ce1c9610478dcd1adc3beb574d295a0819674379a33d196b3f08491977771
MD5 hash:
c81e6f2309e602e0a000ceaacb98dbe3
SHA1 hash:
409d8dc47e8d9bdd499f25bf183dbb98298029e9
Link:
https://www.unpac.me/results/2c72377f-afc8-4cac-834d-1d47d09b046d/
SH256 hash:
744928a56b4d36f17e73eea0534c5e99103d1553d5b0a864a6fd9d4f9899b47f
MD5 hash:
91fed5db1afcdf48e0cd6d4058a013ba
SHA1 hash:
3717b3346e25d3f66f00626ad1a771d8655f485f
Link:
https://www.unpac.me/results/2c72377f-afc8-4cac-834d-1d47d09b046d/
SH256 hash:
ab19f28c700d64814b0c55df868c30dfb94e0a1f9fb6f7bca05bac6eb78a4e52
MD5 hash:
1f2a6c02dcf9aa00a28a5039fb5b8ce0
SHA1 hash:
1ef480867d39b98368af7586a8e6ba38c0c3893a
Link:
https://www.unpac.me/results/2c72377f-afc8-4cac-834d-1d47d09b046d/
SH256 hash:
841f58249aa46e1ee3675636da9cac3894940ab465579bc001eb328d679a586d
MD5 hash:
988f2d08a7b1ec95720191ee0d055af7
SHA1 hash:
bc26c2d1aa64be96980165158258632226564af9
Link:
https://www.unpac.me/results/2c72377f-afc8-4cac-834d-1d47d09b046d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/841f58249aa46e1ee3675636da9cac3894940ab465579bc001eb328d679a586d

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: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 841f58249aa46e1ee3675636da9cac3894940ab465579bc001eb328d679a586d

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/334337/

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