MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c1540d2557099f8a3561fcc3dfac32acf8ca040c06737dfe0737e1a5fd1165ac. 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 4 File information Comments
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SHA256 hash: c1540d2557099f8a3561fcc3dfac32acf8ca040c06737dfe0737e1a5fd1165ac
SHA3-384 hash: c6dc691be971084d527c03c83609290a43181b4d56c99a4fa5dc8a5fc52d72fe33ee3e7a25bde9ca563a13c5d06e3ebf
SHA1 hash: 5388aff3814bf7ce8a9b24a31eea118b2278139a
MD5 hash: fa6f18926a678f4d7a68b055532f206d
humanhash: winner-massachusetts-social-fruit
File name:SecuriteInfo.com.Trojan.PackedNET.1344.11224.9176
Download: download sample
Signature Formbook
Create hunting rule
File size:608'256 bytes
First seen:2022-05-19 15:07:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:5V8L3mZF1vb6TZNpn58Hz9CttIoT2r7DfJ71paqStKTd:5KqZTj6TZDnyT9PoT29710y
Threatray 16'020 similar samples on MalwareBazaar
TLSH T121D4124A73FC575EE4368A7A9BB49148CB73BD715832C3293E54308F0535B92CA92B27
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 SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Trojan.PackedNET.1344.11224.9176
Verdict:
Malicious activity
Analysis date:
2022-05-19 22:47:55 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e334f5df-e5fb-4e59-a1d3-034ca15f1c40

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/272636/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1344.11224.9176.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for synchronization primitives
Creating a window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62865dabc6fd207d6e239be7/reports/216fbb1b-4b67-475c-85c9-5938caed5823/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/d39199c3-7970-46e7-bab6-706b857f7610
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/997819
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for URL or domain
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)
Multi AV Scanner detection for submitted file
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
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c1540d2557099f8a3561fcc3dfac32acf8ca040c06737dfe0737e1a5fd1165ac/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-19 09:29:26 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
19 of 41 (46.34%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yfka2jkxbgpyunlb7tb57lbsvt4mubamazzx37qhg7q2l7irmwwa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
4c2507937c1200a3bcb04401ec42295d72d7af0d6b1d075c60087390cbab046b
Formbook
5fabf5c9fcceb520d7023eaf53122959f42bdb4b1c82bc916baa4bbb94f787ae
Formbook
7004038b720e2eab183b3cb5832661a32187f8d8c5f541dba61270044552fde0
Formbook
786d7fef1f6b313461e01a67b89db558dfd79a558a2669e73ee0483717600bd0
Formbook
9997ae9723bd215339367807584c52f6e7c99910d5d155f10294b7a8ac55ba1a
Formbook
bd9d5262381f0047565bc4bab49a846673c66872a627658541101feb386cec77
Formbook
be44388c1d6cb611f833ee2a52ba342d542bd4ce6da7f4d87a013094fe200eea
Formbook
f40a38225821147424c40ad23f18de1859e7c2ca11ae544387aed8ae2583b364
Formbook
+ 16'010 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:e2e9 rat spyware stealer trojan
Link:
https://tria.ge/reports/220519-shv6tsbffm/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
5b01f027a64f907e5edcfc4ef22a4ae21dc30e773a589666fbb8a2f390ff1d21
MD5 hash:
ae141b03315976e3091a050af64b1bf7
SHA1 hash:
3f795dc025e5ee92c40ea0b124b8eb09b7d390be
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/1e2e09dd-607a-4eca-b374-5da7e4a0bcc8/
Parent samples :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 hash:
22957a1d36a25966553149f8609685cfbab6ccefda7f986246d3a9ef8de2528c
MD5 hash:
30a3072aff52302f7ec6663088006f13
SHA1 hash:
1c6e54181a8b90cb5985b82ffa85188549da67ba
Link:
https://www.unpac.me/results/1e2e09dd-607a-4eca-b374-5da7e4a0bcc8/
SH256 hash:
622d057bfb69d6ef2caddef195ff723b6ee0a895946e4a5201886e52de25e3b0
MD5 hash:
629506a31c7f5d302f7d2db433afd3aa
SHA1 hash:
7b59fdb6dc461d6650a31a93496cb6d1adc6309b
Link:
https://www.unpac.me/results/1e2e09dd-607a-4eca-b374-5da7e4a0bcc8/
SH256 hash:
09602efe05dc6b9738b23b91708978231d20c08329940541a086561795a6c9fd
MD5 hash:
1521132bd568891debf24b4973aaa24e
SHA1 hash:
393fafe43a177d02d2a8be164101fc2add2748dc
Link:
https://www.unpac.me/results/1e2e09dd-607a-4eca-b374-5da7e4a0bcc8/
SH256 hash:
fda7eb098e66d4972e05ef9ef8cde5149f4b8ccd65bf7545db1305db89b1111b
MD5 hash:
e09ebb92bfeb772ece38a12a65e08b18
SHA1 hash:
055296bc68beae33aed7480ec5590f8184951fd8
Link:
https://www.unpac.me/results/1e2e09dd-607a-4eca-b374-5da7e4a0bcc8/
SH256 hash:
c1540d2557099f8a3561fcc3dfac32acf8ca040c06737dfe0737e1a5fd1165ac
MD5 hash:
fa6f18926a678f4d7a68b055532f206d
SHA1 hash:
5388aff3814bf7ce8a9b24a31eea118b2278139a
Link:
https://www.unpac.me/results/1e2e09dd-607a-4eca-b374-5da7e4a0bcc8/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c1540d255709/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.85
Link:
https://yomi.yoroi.company/submissions/c1540d2557099f8a3561fcc3dfac32acf8ca040c06737dfe0737e1a5fd1165ac

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

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/272636/

Comments