MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2c9a7034a9d5463d3c4e91dd5b652c91e906864b1731933397b41662bf85d0d2. 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: 15


Intelligence 15 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2c9a7034a9d5463d3c4e91dd5b652c91e906864b1731933397b41662bf85d0d2
SHA3-384 hash: fbbd93e66feaa381b3077e016301ff472c5dbd0d5fe8ee37280f0df90c7909ddb534125c03b20e8a39a53c56061a3e55
SHA1 hash: b2a990e7d8918864868c74e7d32de30b45be1ede
MD5 hash: 713389a8fe739719850f57db5bae0358
humanhash: william-rugby-one-kansas
File name:P.O. # 42781.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:663'552 bytes
First seen:2022-04-24 14:18:02 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:yRbWAYtv/hj0rSHWHjl5/cwpB6N7OkiUujgm4oGEOB4VMzxP8ejMx:UWBdh4D/cwp2TuUm4oOV8Bx
TLSH T1E8E4E020B2F94B65D67BA7F64631110427F67E652531E20E0CEAB4EB25B3F800A74F97
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 :
1
# of downloads :
255
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
P.O. # 42781.exe
Verdict:
Malicious activity
Analysis date:
2022-04-25 01:19:13 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/cd2f5be8-6034-4ad3-b6a2-8d06dfbd29d5

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/266172/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.HCA.genEldorado.28748.29403.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/62655c1e448aa6d887a5d96b/reports/fbe0a958-cbca-4153-991c-a4dfbc459bbc/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bd12eabe-7b18-4923-b01a-40e64ebb1382
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/982065
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)
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
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/2c9a7034a9d5463d3c4e91dd5b652c91e906864b1731933397b41662bf85d0d2/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-04-24 09:40:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fsnhanfj2vdd2pcoshovwzjmshuqnbslc4yzgm4xwqlgfp4f2dja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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/220424-rma6sadggp/
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/ee99c1c4-60a6-4f26-baf9-79c0941ed112/
Parent samples :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 hash:
a0c62a041451c77d79d4d4b27eae39358bd136d0f739c876e561b7e257a8e7a5
MD5 hash:
51216c6e925c0dc0299ba77af27db040
SHA1 hash:
1a0bcabe125a35191bcc1e79e1b6c2636257c653
Link:
https://www.unpac.me/results/ee99c1c4-60a6-4f26-baf9-79c0941ed112/
SH256 hash:
625565b5e3a87b36bfb5df0362e10d58f5b378279cfa95bcd1b7eafee99eea70
MD5 hash:
1ea010c3be5506869c14ecf819b0c792
SHA1 hash:
09d95e43d03eab1b585a3c619f23ba976a2c61e9
Link:
https://www.unpac.me/results/ee99c1c4-60a6-4f26-baf9-79c0941ed112/
SH256 hash:
8e1b71477c489cbc954c8d54d08284f759ab2cd1b65050128ecbda9ebe16904d
MD5 hash:
b477c0f043954b457d5f0f91327ec606
SHA1 hash:
0db8774ef3e2b8245504f66a35afcf987ebdaaba
Link:
https://www.unpac.me/results/ee99c1c4-60a6-4f26-baf9-79c0941ed112/
SH256 hash:
2c9a7034a9d5463d3c4e91dd5b652c91e906864b1731933397b41662bf85d0d2
MD5 hash:
713389a8fe739719850f57db5bae0358
SHA1 hash:
b2a990e7d8918864868c74e7d32de30b45be1ede
Link:
https://www.unpac.me/results/ee99c1c4-60a6-4f26-baf9-79c0941ed112/
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/2c9a7034a9d5463d3c4e91dd5b652c91e906864b1731933397b41662bf85d0d2

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:pdb2
Create hunting rule
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.

Malspam

Formbook

Executable exe 2c9a7034a9d5463d3c4e91dd5b652c91e906864b1731933397b41662bf85d0d2

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/266172/

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