MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3899703b681fc2635f25de6e0f3fab60aaa03d46531b1423cd3c469059d62922. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3899703b681fc2635f25de6e0f3fab60aaa03d46531b1423cd3c469059d62922
SHA3-384 hash: 53b805eb9f9db3125bdf94e08425999a6f29f8b335fdf1acf167107f7a9d7db21368ab1710a5f06e4e60980ea646a9e7
SHA1 hash: 23beaf2bb127a77dd3b95dbe95a587d439709732
MD5 hash: e8c5ef5c916a5f57a000c1d9c639a113
humanhash: eighteen-delaware-autumn-oklahoma
File name:PURCHASE ORDER 091020.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:591'360 bytes
First seen:2023-09-12 13:54:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:pOu/S3OXj6LMeYemJgPuaCowP+LrmLbu08WGziJdlHC7q1c5fVsbR:pOuq3OXmL1XmJgW1tmquq71C26tO
Threatray 40 similar samples on MalwareBazaar
TLSH T1F0C4231129620F32E4FCC7F35144555127FBB62E22E0DA6C5E95F2E89E74F08A6B3683
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) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon e2983a9393ba98e2 (9 x AgentTesla, 2 x Formbook, 2 x SnakeKeylogger)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
309
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PURCHASE ORDER 091020.exe
Verdict:
Malicious activity
Analysis date:
2023-09-12 13:57:43 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/c3b61e74-085f-48f8-b41a-76dbc0596afc

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/448194/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Launching a process
Creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65006db89bae8a378554009d/reports/7061577a-053a-4452-9ca0-acf1c2e62564/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/3899703b681fc2635f25de6e0f3fab60aaa03d46531b1423cd3c469059d62922
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/990fec6a-9c34-4a9e-9ffe-3b0773141abd
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1308588
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for URL or domain
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses netstat to query active network connections and open ports
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1308588 Sample: PURCHASE_ORDER_091020.exe Startdate: 15/09/2023 Architecture: WINDOWS Score: 100 30 www.nasyoeastasia.org 2->30 32 www.ivelina.xyz 2->32 34 14 other IPs or domains 2->34 42 Malicious sample detected (through community Yara rule) 2->42 44 Antivirus detection for URL or domain 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 8 other signatures 2->48 10 PURCHASE_ORDER_091020.exe 3 2->10         started        signatures3 process4 signatures5 58 Sample uses process hollowing technique 10->58 13 RegSvcs.exe 10->13         started        16 RegSvcs.exe 10->16         started        process6 signatures7 60 Maps a DLL or memory area into another process 13->60 62 Queues an APC in another process (thread injection) 13->62 18 VkDKCxXwTFsjYjzWpEMQcieq.exe 13->18 injected process8 process9 20 NETSTAT.EXE 13 18->20         started        signatures10 50 Tries to steal Mail credentials (via file / registry access) 20->50 52 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 20->52 54 Tries to harvest and steal browser information (history, passwords, etc) 20->54 56 4 other signatures 20->56 23 explorer.exe 37 1 20->23 injected 26 VkDKCxXwTFsjYjzWpEMQcieq.exe 20->26 injected 28 firefox.exe 20->28         started        process11 dnsIp12 36 ivelina.xyz 185.212.71.237, 49758, 49759, 49760 QUICKPACKETUS Germany 23->36 38 www.nonglamnghiep.com 125.212.243.87, 49754, 49755, 49756 VIETEL-AS-APViettelGroupVN Viet Nam 23->38 40 10 other IPs or domains 23->40
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3899703b681fc2635f25de6e0f3fab60aaa03d46531b1423cd3c469059d62922/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeylogger
Create hunting rule
Status:
Malicious
First seen:
2023-09-07 02:47:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
22 of 38 (57.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hcmxao3id7bggxzf3zxa6p5lmcvkapkgkmnrii6nhrdjawowfera._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
20e93d317f46bc7db6349a15c50362749b0b6cfde92b196b3eab03ccf1dc363b
Formbook
54ec929ab868528d647d285298b5ab71ef9aad83e1a3594b3d13f2a02f127d96
Formbook
75a5d5d46fa6c5178a43eea7c2d4d0bb66dd6879413318416dd70b4ef27faee8
Formbook
8ac567bfb4be359b1136e1236bbdbac3e160077a89952f967467a345a23c0047
Formbook
98bce22d33a7e23bf5a32739d01c10443509da758e81b57d26bcc1fcfeb3861f
Formbook
a4d5963e0d2770194c439a2fa07da2dda5eeceb8eb5bb5c1b106cff178f4e624
Formbook
ac254c8f30ac538efa1c6774d3b7e6a1b379af081c6cb15d36440e4913bc41c1
Formbook
aee3fa1601e0521d9c628cb2fd13178a06c2f7923478742189026102cda8a494
Formbook
c1a46fa04740b97fb8ffd1a24b00a770dd5ccb929a66583ed48a4ce75da7c175
Formbook
+ 30 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/230912-q744xsfg49/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
4cf83fc9efeb826ac73a6099f8a0956121ecba2f971ba93cb5fac72a8656920f
MD5 hash:
5706301c0d4d9f59abf27b8f4d485e66
SHA1 hash:
15ca4e3830b66b626095b727a7d89268c17967ab
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/04c48bbb-20f4-4d56-925d-b36f286beea6/
Parent samples :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 hash:
31329dc320d9045a64a27fc3e8e03af37996773f6c866e1b3519d6db473eaace
MD5 hash:
b8543a30ab57dfa41dcb087168eee7ed
SHA1 hash:
5694b6c2a7ac003d0c13cceb3bf50497bb19a307
Link:
https://www.unpac.me/results/04c48bbb-20f4-4d56-925d-b36f286beea6/
SH256 hash:
40bc7cbcb1c6f215985580dfd1ce3c5ab203787a3263ef82dd8428f9e83c4bb6
MD5 hash:
515c64a2dc729f5a3794aa5fa9d90c61
SHA1 hash:
dffe3889785cd3e1b24f7bc58684887cb7126367
Link:
https://www.unpac.me/results/04c48bbb-20f4-4d56-925d-b36f286beea6/
SH256 hash:
777d50e9a3dbf14a6af09e371b505330d3eb7a0470205c8be16ee2b298ecedae
MD5 hash:
0ad785249cd896c2066ad23f4a84a204
SHA1 hash:
bc997a589964ec19dbab5e2d9d621656bf2cf741
Link:
https://www.unpac.me/results/04c48bbb-20f4-4d56-925d-b36f286beea6/
SH256 hash:
0630b864e828fff2d66f33ab7d00fad231df4c00fc0bbad313ee0d12ca503198
MD5 hash:
f559a9abbd849eb977d262d597d6e4fd
SHA1 hash:
0a8769b40b026852690c89b913c2812817ef43c8
Link:
https://www.unpac.me/results/04c48bbb-20f4-4d56-925d-b36f286beea6/
SH256 hash:
3899703b681fc2635f25de6e0f3fab60aaa03d46531b1423cd3c469059d62922
MD5 hash:
e8c5ef5c916a5f57a000c1d9c639a113
SHA1 hash:
23beaf2bb127a77dd3b95dbe95a587d439709732
Link:
https://www.unpac.me/results/04c48bbb-20f4-4d56-925d-b36f286beea6/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3899703b681f/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/3899703b681fc2635f25de6e0f3fab60aaa03d46531b1423cd3c469059d62922

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
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.

Malspam

Formbook

Executable exe 3899703b681fc2635f25de6e0f3fab60aaa03d46531b1423cd3c469059d62922

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/448194/

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