MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a9ca3955156a843f095203a36d37f40d305926be366fbc1238e73e8590284655. 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: 19


Intelligence 19 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a9ca3955156a843f095203a36d37f40d305926be366fbc1238e73e8590284655
SHA3-384 hash: e80a7c7245d5804696680130d6eb5703741a5f080df5726a132f8f7d5571f5a43fadf6bedcfb1be0bf95177911fe8338
SHA1 hash: 0055d197345b987a44eb5606b9de1f37266e02cc
MD5 hash: 2cfcfa872943b645d06cfa942435d654
humanhash: snake-hamper-apart-south
File name:DHL documents_PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:621'568 bytes
First seen:2024-09-23 14:08:39 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:dd9NnRTwX/gNDTIO7LFV9B75Nrwu1oQZwq37crrjjnJZw:H5BvIi79B7t+q37SHJe
Threatray 1'650 similar samples on MalwareBazaar
TLSH T1B6D401153198DB02C4661BF545B3D2F823B95E8E6602C3439EDABEEF7E7A78405063D2
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter abuse_ch
Tags:DHL exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
410
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
DHL documents_PDF.exe
Verdict:
Malicious activity
Analysis date:
2024-09-23 14:23:16 UTC
Tags:
netreactor formbook xloader stealer
Link:
https://app.any.run/tasks/5ae01542-cb50-4bd2-8799-7b9ad6d9cd01

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Packed2.48007.18882.17827.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66f176938aca58c2b2c6ea09
Tags:
Static Stealth Gain Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/66f176900883d6a903edce2e/reports/4347f2ee-5153-4d1d-a85c-fe6ca6d6a452/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/a9ca3955156a843f095203a36d37f40d305926be366fbc1238e73e8590284655
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/b7a34873-9ac1-481d-9ac0-532a03fda114
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1515931
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a9ca3955156a843f095203a36d37f40d305926be366fbc1238e73e8590284655
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a9ca3955156a843f095203a36d37f40d305926be366fbc1238e73e8590284655/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-09-23 09:25:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vhfdsvivnkcd6cksaorw2n7ubuyfsjv6gzx3yery447ilebiizkq._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
42e319dba75dc914d5645a6fc1025984c6e64a34303cb7c5e9b936aade524efe
Formbook
435424456ff6964a551a626db39ad606b58644f6ae9189e1e590aec8d645c397
Formbook
7dbfe3e815092dfd471861a962bbb464ec76438144f4cb5dd031b02eda2f8ea9
Formbook
af4f28ed9e5d8205220c60f42668e6576233f54885c63fcaf43c2315328f45f1
Formbook
e23bf1a652dd78590f79e4a350dd7869c9c5477ef9d1dcae78504ac4fa46cada
Formbook
e915f0f594c0cc1c43241cbe47784d5a203dc521c341eb8aa95c6e6d10ff65b3
Formbook
+ 1'640 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:b31a discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240923-rf6n4s1hpf/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Verdict:
Malicious
Tags:
formbook
YARA:
n/a
Link:
https://app.threat.zone/submission/c1ea3e22-ae01-4095-a2e6-61c2bd55a858
Unpacked files
SH256 hash:
c83c0a367712867b960ce8d742a57cfe6231d65cfe5eb14cdcced497d77fcd65
MD5 hash:
3abd239253118b6d0a823b9efd1ca97c
SHA1 hash:
1da5c763b07be907a24dc57d3d22e278ca9be6ad
Detections:
FormBook
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/79bbdb26-a3ce-4f3b-8cc7-1f6cebba7854/
Parent samples :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 hash:
f6ed8f1e70e0ed784a089754fc38b543c5071f0fb00f178cfd0258eccd57b2a4
MD5 hash:
88cb622f70b3201e7869dc8234b5fea6
SHA1 hash:
d683830d3877620c3cc82bc53b1f78ec5457447a
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/79bbdb26-a3ce-4f3b-8cc7-1f6cebba7854/
SH256 hash:
5f54dacd422f4b063a925b312838642965bab92dd7235b8c9580a60ef46e5d14
MD5 hash:
8ffbd04efdcdafa0b86ef20fb37c29bb
SHA1 hash:
a7018a31bb74977711f2f4b56e29aa335448914f
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/79bbdb26-a3ce-4f3b-8cc7-1f6cebba7854/
Parent samples :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 hash:
a9ca3955156a843f095203a36d37f40d305926be366fbc1238e73e8590284655
MD5 hash:
2cfcfa872943b645d06cfa942435d654
SHA1 hash:
0055d197345b987a44eb5606b9de1f37266e02cc
Link:
https://www.unpac.me/results/79bbdb26-a3ce-4f3b-8cc7-1f6cebba7854/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a9ca3955156a/report/overview.html
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/a9ca3955156a843f095203a36d37f40d305926be366fbc1238e73e8590284655

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Create hunting rule
Author:malware-lu
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.

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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