MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c26813c2c4b46891c4198000251212c525ef1079f680121a50ed5cefd4e39120. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
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SHA256 hash: c26813c2c4b46891c4198000251212c525ef1079f680121a50ed5cefd4e39120
SHA3-384 hash: def2b6e4b12d0b5e3d79111d0840f88a04b0069ead573075cbc3822497eaf8c0310bcb85b9d14680443ee921a3c955b1
SHA1 hash: c8f4dd5cd218a4af9b9e44afaaac76ca954434c3
MD5 hash: 7b6d517063c2a1558ca508c0bfa07b70
humanhash: west-rugby-texas-mexico
File name:triage_dropped_file
Download: download sample
Signature Formbook
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File size:833'024 bytes
First seen:2022-08-25 13:31:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 24576:Bq9T/0shbH19T/0shbrBdwopCusDS8R2cH:4r5NxHwoMu/8R26
TLSH T19405D056B2D0CC57CBEB67B6CC61D0600B74B96CAB73C67E754034A93832BD9890EA53
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
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)
File icon (PE):PE icon
dhash icon 6670596f4f4e0d0a (34 x Loki, 25 x AgentTesla, 21 x SnakeKeylogger)
Reporter malwarelabnet
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
336
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
triage_dropped_file
Verdict:
Malicious activity
Analysis date:
2022-08-25 13:32:38 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/822c0826-c986-4942-8f89-65091140c73d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/301177/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Launching cmd.exe command interpreter
Searching for the window
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/630779e73cbb13868a7fa3cc/reports/f4fa95e9-a786-4af5-9fbf-a9d374bf8ec6/overview
Result
Verdict:
UNKNOWN
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c82fb971-55a8-4515-bbc5-bd8f4b8781d1
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1057751
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in 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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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: 690267 Sample: triage_dropped_file Startdate: 25/08/2022 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus detection for URL or domain 2->36 38 Yara detected AntiVM3 2->38 40 6 other signatures 2->40 10 triage_dropped_file.exe 3 2->10         started        process3 file4 30 C:\Users\user\...\triage_dropped_file.exe.log, ASCII 10->30 dropped 50 Tries to detect virtualization through RDTSC time measurements 10->50 52 Injects a PE file into a foreign processes 10->52 14 triage_dropped_file.exe 10->14         started        17 triage_dropped_file.exe 10->17         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 Queues an APC in another process (thread injection) 14->60 19 explorer.exe 14->19 injected process8 dnsIp9 32 www.mbyestudio.online 19->32 42 System process connects to network (likely due to code injection or exploit) 19->42 23 cmmon32.exe 19->23         started        signatures10 process11 signatures12 44 Modifies the context of a thread in another process (thread injection) 23->44 46 Maps a DLL or memory area into another process 23->46 48 Tries to detect virtualization through RDTSC time measurements 23->48 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/c26813c2c4b46891c4198000251212c525ef1079f680121a50ed5cefd4e39120/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-08-25 13:32:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
47
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yjubhqwewrujdrazqaackeqsyus66edz62abegsq5voo7vhdseqa._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:gu5d rat spyware stealer trojan
Link:
https://tria.ge/reports/220825-qsynladfep/
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
Unpacked files
SH256 hash:
224e7d67688538eb0e6ec821f5fae6a1c7fa214ec02475492970c786e05c212b
MD5 hash:
8cc29d07418d4b8a371e04fe0e48ce17
SHA1 hash:
515686f3551907cedcfad1c87b0787566762de40
Detections:
win_formbook_g0
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win_formbook_auto
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FormBook
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Link:
https://www.unpac.me/results/ee36b02e-1635-420c-ae88-da79862265f6/
Parent samples :
afa4507bce58af7b4050b41a86eabf424ac0e89a69b8a962c1dd58a1620457b5
c26813c2c4b46891c4198000251212c525ef1079f680121a50ed5cefd4e39120
02099eff8c8367527b831448f397741f49f34ee22d581b7a7776755fe3479e94
SH256 hash:
ceda93fdfce3ad8e4f800d4f2d940d793b68b4b0b254b652bf42e13dbd189ba7
MD5 hash:
786afe844ec1723b635cace747b60efd
SHA1 hash:
fa647a584a7fcad392147a182e3a2435b3ad5bb9
Link:
https://www.unpac.me/results/ee36b02e-1635-420c-ae88-da79862265f6/
SH256 hash:
7707e3733c41cd00c219dca2fb4031372873abe5438b4a2608595af9dcc71b6e
MD5 hash:
2f380b84f7ee054d48429b6bc37ba1f1
SHA1 hash:
6c95d347444060130b3d1d37bc5c2a0f29550f26
Link:
https://www.unpac.me/results/ee36b02e-1635-420c-ae88-da79862265f6/
SH256 hash:
9c9815a4e96487941b9117bee9fdbc78096b44a7aabd2092e79a26dcd74c1f08
MD5 hash:
78b42351e1d2434b5650029c190dc491
SHA1 hash:
5bd9d143ab23bebab655f8d3c2241d72eda81784
Link:
https://www.unpac.me/results/ee36b02e-1635-420c-ae88-da79862265f6/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/ee36b02e-1635-420c-ae88-da79862265f6/
SH256 hash:
c26813c2c4b46891c4198000251212c525ef1079f680121a50ed5cefd4e39120
MD5 hash:
7b6d517063c2a1558ca508c0bfa07b70
SHA1 hash:
c8f4dd5cd218a4af9b9e44afaaac76ca954434c3
Link:
https://www.unpac.me/results/ee36b02e-1635-420c-ae88-da79862265f6/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c26813c2c4b46891c4198000251212c525ef1079f680121a50ed5cefd4e39120

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
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Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/301177/

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