MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c3a2bf73b5a0b28c66b5469b67ae3765e74a8066889935a2c2c1875e7afcb695. 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 4 File information Comments
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SHA256 hash: c3a2bf73b5a0b28c66b5469b67ae3765e74a8066889935a2c2c1875e7afcb695
SHA3-384 hash: d807b658fed9dcb2e184003e9314d78ee67e45a9b830fcb19c1434fbfa2afdbaad6dc332e87cb09de642271f38ed8624
SHA1 hash: 9fd6053deb58cd89e8ee25544512366983524074
MD5 hash: 3404384df92c0cd300c71e13f2409159
humanhash: massachusetts-muppet-sodium-magazine
File name:DHL_Express_shipment_invoice_Confirmation_BJ441051700012.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:644'096 bytes
First seen:2022-03-14 10:23:59 UTC
Last seen:2022-03-14 11:53:28 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:vr/PbT0GLMQ2liq0oRuUQ7y8BiYc41bEgXK55:TX0GLMfHlQW8BwcESs
TLSH T1BAD49D026781C640DC3D6770E53848F013FA7D5BEA30E25F3D897EA87AB36D66622646
File icon (PE):PE icon
dhash icon 41554d4d554d4955 (7 x Formbook, 7 x AveMariaRAT, 4 x AgentTesla)
Reporter abuse_ch
Tags:DHL exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
178
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/250098/
Detection(s):
SecuriteInfo.com.Trojan.Siggen17.25110.7692.13560.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Reading critical registry keys
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/622f17d00cd58dbd92959131/reports/0dd41205-3789-4133-b256-96cc9cb53301/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/14dd34b0-c9ea-47e4-bdf3-ecc4987d71a8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/956000
Signature
.NET source code contains method to dynamically call methods (often used by packers)
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
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)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c3a2bf73b5a0b28c66b5469b67ae3765e74a8066889935a2c2c1875e7afcb695/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-14 01:05:54 UTC
File Type:
PE (.Net Exe)
Extracted files:
86
AV detection:
23 of 27 (85.19%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yorl645vucziyzvvi2nwplrxmxtuvadgrcmtliwcygdv46x4w2kq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:nr5c rat spyware stealer trojan
Link:
https://tria.ge/reports/220314-mfd7msecc4/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Unpacked files
SH256 hash:
1cc0904bcc4bb1b9ac65e72961e1c804c12e703b4f36633b8648ec3779e1ce97
MD5 hash:
458197f25384bb9f3b51b55e480cd667
SHA1 hash:
5d289bb55959a691bcd447529757398f1c35dc04
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/2c804f35-c20c-4d9d-94b7-5f26d2af55bb/
Parent samples :
c3a2bf73b5a0b28c66b5469b67ae3765e74a8066889935a2c2c1875e7afcb695
a076410949ef42d419036c6de404ce6eb76323478ef50fc8c257d14062928dd6
a96ddfe26cc41ec92563b0b721a0036e9405ac08f617d5289a921ad054b4ae5c
5091b0812652b76aa775615c4887c2f01934763ebd857bb0cbd40f3debc36770
fde5d332e9d202eecc38f4af1b9db05226b6fa0716064434f4e53c098697d1bb
SH256 hash:
c611a6ceb263401ed18ff93961bd6d0cdf8757e48d8e76b13943e85b9d3b5a0b
MD5 hash:
f9b293305bd04eee511c0ffd0e7f29d7
SHA1 hash:
fd981a9537a903422311f582defc1c8fd97248af
Link:
https://www.unpac.me/results/2c804f35-c20c-4d9d-94b7-5f26d2af55bb/
SH256 hash:
7d170109f352f251d7ac012882e005b059b0db5ecce7520acf7be2ba8f13792a
MD5 hash:
72403055ee098f50bcc8a238fdbef878
SHA1 hash:
eb5ed9b38f5a23bb00b221acf3f7233aa2e9299d
Link:
https://www.unpac.me/results/2c804f35-c20c-4d9d-94b7-5f26d2af55bb/
SH256 hash:
fc4b5f53362334630b1f94201178275ecfb79ef4f4610c2211d146d791b29c27
MD5 hash:
4ec66a90617192d4ec943da97c64c622
SHA1 hash:
6c8de23a2b4b5cfdd04f5b8a02d6e9c74ae1f39a
Link:
https://www.unpac.me/results/2c804f35-c20c-4d9d-94b7-5f26d2af55bb/
SH256 hash:
a4ad262051ed2de2d106d703645a4a5a67d039881e6367e842f32f4a19d74f86
MD5 hash:
05fcbc9d79fd6f5e3147e636f9b413c2
SHA1 hash:
58cfe2bf03ec5d28a3dae3344ae3ea8c17a64593
Link:
https://www.unpac.me/results/2c804f35-c20c-4d9d-94b7-5f26d2af55bb/
SH256 hash:
c3a2bf73b5a0b28c66b5469b67ae3765e74a8066889935a2c2c1875e7afcb695
MD5 hash:
3404384df92c0cd300c71e13f2409159
SHA1 hash:
9fd6053deb58cd89e8ee25544512366983524074
Link:
https://www.unpac.me/results/2c804f35-c20c-4d9d-94b7-5f26d2af55bb/
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/c3a2bf73b5a0b28c66b5469b67ae3765e74a8066889935a2c2c1875e7afcb695

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/250098/

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