MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83aca3eedf69640af7707090177d6194b4f0ece7feb76ddf84fa459cea018a97. 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: 17


Intelligence 17 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83aca3eedf69640af7707090177d6194b4f0ece7feb76ddf84fa459cea018a97
SHA3-384 hash: c6cb7a71e46832943a291af5f8640d9f92cf4e3857cc664f45d9a251ea5709568f6ce183388ed36058c8acc02f579838
SHA1 hash: cdebf68f82628e3da587acd5326a6a77fe2789f8
MD5 hash: ec3c47287f6c4b7b7f67a8e3e33554c9
humanhash: robert-wisconsin-purple-fruit
File name:INV #009991267..exe
Download: download sample
Signature Formbook
Create hunting rule
File size:711'168 bytes
First seen:2025-06-03 07:03:32 UTC
Last seen:2025-06-16 14:15:07 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:Eq8VcuqFVfhw+oIUFYL3Wz0zHjZUiHWn1MovBCCwuzBobKlYozJJqhVa3jvlN9:Ecw0zDZtW1jBbwitlzzHCVa3jv
TLSH T183E4129823BAEB03D0B20BF90832C1B557B86CDCE910D6574FE6ACDF746AB10569474B
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
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
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
4
# of downloads :
431
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
INV #009991267..exe
Verdict:
Malicious activity
Analysis date:
2025-06-03 08:06:21 UTC
Tags:
netreactor formbook xloader
Link:
https://app.any.run/tasks/3e53a475-6f16-4f8e-a5c8-cd561a0fb1c1

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/7000/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.49367.31576.11196.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=683e9ef18bd5d68a12e44370
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/683e9e78fd02ed5e059513da/reports/e5c67622-022a-42c3-8cc5-6c92aee886f0/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/83aca3eedf69640af7707090177d6194b4f0ece7feb76ddf84fa459cea018a97
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2d74a408-d081-46d2-be44-ba6a4e8f882b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1704631
Signature
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
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)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses threadpools to delay analysis
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1704631 Sample: INV #009991267..exe Startdate: 03/06/2025 Architecture: WINDOWS Score: 100 29 www.swordsandbox.xyz 2->29 31 www.expertscloud.xyz 2->31 33 22 other IPs or domains 2->33 41 Suricata IDS alerts for network traffic 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 Yara detected FormBook 2->45 49 4 other signatures 2->49 10 INV #009991267..exe 3 2->10         started        signatures3 47 Performs DNS queries to domains with low reputation 31->47 process4 file5 27 C:\Users\user\...\INV #009991267..exe.log, ASCII 10->27 dropped 59 Injects a PE file into a foreign processes 10->59 14 INV #009991267..exe 10->14         started        signatures6 process7 signatures8 61 Maps a DLL or memory area into another process 14->61 17 nzvgnAIW.exe 14->17 injected process9 process10 19 write.exe 13 17->19         started        signatures11 51 Tries to steal Mail credentials (via file / registry access) 19->51 53 Tries to harvest and steal browser information (history, passwords, etc) 19->53 55 Modifies the context of a thread in another process (thread injection) 19->55 57 3 other signatures 19->57 22 lObPgZJ7jrOtv.exe 19->22 injected 25 firefox.exe 19->25         started        process12 dnsIp13 35 f4v01.coalmo.com.cdngtm.com 52.229.202.157, 49724, 49725, 49726 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 22->35 37 livesofimpact.org 67.20.76.160, 49736, 49737, 49738 UNIFIEDLAYER-AS-1US United States 22->37 39 8 other IPs or domains 22->39
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/83aca3eedf69640af7707090177d6194b4f0ece7feb76ddf84fa459cea018a97
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83aca3eedf69640af7707090177d6194b4f0ece7feb76ddf84fa459cea018a97/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2025-06-02 04:04:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qowkh3w7nfsav53qocibo7lbss2pb3hh723w3x4e7jczz2qbrklq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250603-hv25ssyyhx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/3f373224-6192-4f8b-851d-831a88d424a1
Unpacked files
SH256 hash:
83aca3eedf69640af7707090177d6194b4f0ece7feb76ddf84fa459cea018a97
MD5 hash:
ec3c47287f6c4b7b7f67a8e3e33554c9
SHA1 hash:
cdebf68f82628e3da587acd5326a6a77fe2789f8
Link:
https://www.unpac.me/results/bdcf2510-52f1-4d74-8136-9116542c1df9/
SH256 hash:
10f257d1f8acb840fed595a7a9eb87fc15eb17a3bbea928e32a4db42e41c8922
MD5 hash:
1ed5c56400fafdf113ace56c29b1f538
SHA1 hash:
30e1d9ae59abb291d2057c6d160726c98ce8cb28
Link:
https://www.unpac.me/results/bdcf2510-52f1-4d74-8136-9116542c1df9/
SH256 hash:
8ed7b72598add6b7249d43c925b03f3ac1fd72751d7579bf009b4a7027f98698
MD5 hash:
b1b26d6507384cd62394e0c5c29bb767
SHA1 hash:
5d4eb18812f2bd23d83efcee7807a33b8bd4f7a6
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/bdcf2510-52f1-4d74-8136-9116542c1df9/
SH256 hash:
009b6e9f54da324d32e907f727f8348aedb4e81903741b36e2e749c94beee9a7
MD5 hash:
a29b959aaf474ef1ae7630cc8c63746a
SHA1 hash:
821ce86620334badcc76665f16e23b749dd03c57
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/bdcf2510-52f1-4d74-8136-9116542c1df9/
Parent samples :
dc8e0752010c76c6815c5631eb656e8e8f179be1a794c5f6679e5072d6ffe496
7bb5c9e35f9f5810040621ea28a76b70dad305aab4b3ab4aa601c50f5454a8cf
c63adef59abf01989d66af7ff5ebf4b12cd88cacecd1e7129a2959471a8a3d3a
83aca3eedf69640af7707090177d6194b4f0ece7feb76ddf84fa459cea018a97
SH256 hash:
e497062983df7dcd0b91010634716f04231f5e15e974fb490ff08cd6db14bf6f
MD5 hash:
118ee8f1b46da68f5f6d6e46c0e11b59
SHA1 hash:
515961409069d501a5d56bbaed5e18b5543ddda6
Link:
https://www.unpac.me/results/bdcf2510-52f1-4d74-8136-9116542c1df9/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/83aca3eedf69/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/83aca3eedf69640af7707090177d6194b4f0ece7feb76ddf84fa459cea018a97

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:INDICATOR_SUSPICIOUS_EXE_RawPaste_URL
Create hunting rule
Author:ditekSHen
Description:Detects executables (downlaoders) containing URLs to raw contents of a paste
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
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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/7000/

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 (GUARD_CF)high

Comments