MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8a52cd96047db62def2fc5fa5b631751d4444388918a42bbb8dcd0ba3e025ed. 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: 11


Intelligence 11 IOCs YARA 7 File information Comments
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SHA256 hash: c8a52cd96047db62def2fc5fa5b631751d4444388918a42bbb8dcd0ba3e025ed
SHA3-384 hash: 4c1eec03413000930c23e4bda99ec054045ccc6df23aaeb56fa536023597852960a69c318e72f0abc4ca1db474d7afe8
SHA1 hash: fa29e3d5f2d36185a99c00f155fed592da0100cd
MD5 hash: 477f81c8e93d5792fb850bbf07f3fa10
humanhash: apart-table-eight-lithium
File name:SecuriteInfo.com.W32.AIDetectNet.01.10755.7391
Download: download sample
Signature Formbook
Create hunting rule
File size:797'696 bytes
First seen:2022-08-22 12:17:33 UTC
Last seen:2022-08-22 12:41:26 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 12288:Du1zVibB0zwdCum7vd4hmFOSHjV+moLwXH2yiNQ3AQOt+/oWt4LGv+kv0b:CvLzwdCumrPDgSB3XU+/oWWLi+kv
TLSH T13705CF8D6697C869EC2A0374D4F65A440A26BD653670DECFA44B70162E733FF007AA1F
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)
File icon (PE):PE icon
dhash icon 1919194959795280 (3 x Formbook, 1 x AgentTesla)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
255
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.W32.AIDetectNet.01.10755.7391
Verdict:
Malicious activity
Analysis date:
2022-08-22 12:19:02 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/19837514-00c5-4faf-8eea-55e4a5242572

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/300205/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.10755.7391.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/630373fb393b1c8c4703df90/reports/3659deb9-b66c-49eb-95b2-c787335f9584/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/1cb10e34-9cfd-4a41-9f74-24f79b76f202
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1055494
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
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:
n/a
Link:
https://mwdb.cert.pl/sample/c8a52cd96047db62def2fc5fa5b631751d4444388918a42bbb8dcd0ba3e025ed/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-08-22 12:18:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
33
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zcsszwlai7nwfxxs7rp2lnrrououirbyremkik53rxgqxi7aexwq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:j02y rat spyware stealer trojan
Link:
https://tria.ge/reports/220822-pgldfsfefq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Unpacked files
SH256 hash:
dcd27394f2514ac52ec01714aeaedc229566f8186d483a773b5b10c92f04507d
MD5 hash:
a5e75127ae0ae177eab8e16db62a3fbf
SHA1 hash:
7d86d776928ffd7baef8dd97c5e986839eed31b8
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/94a4d14c-4f62-46f1-9911-10b7dc724e00/
Parent samples :
c8a52cd96047db62def2fc5fa5b631751d4444388918a42bbb8dcd0ba3e025ed
d113b8df1237a3474a5119bf06172685a1cfc408759805a58210b29813289585
6f1d836fbe2110685eecb1042c24923e8764680cb21b0bdf7d0f151a6c1f0b1a
4e16775a285e8a96981cfcf573df8127cce0602281911255ac3c706323ec0091
9bfbca223cfe1d4ad139cc89861b6dfb09d24a63c24f3291a4af0508e03ee8b6
4f8105ba43ad52ffeb0e14fdb0ebce3e902c6386d9e60b72e6bb3c260e407a54
SH256 hash:
6ee96d3b16f57aee466bb3cdd75247d6d8bcf113d718fda4ac713545773c99bd
MD5 hash:
73e423883d397d9bbbf7b6aae625e608
SHA1 hash:
88b4bcd42930332587d17ae8de338ea2939f6a32
Link:
https://www.unpac.me/results/94a4d14c-4f62-46f1-9911-10b7dc724e00/
SH256 hash:
ceda93fdfce3ad8e4f800d4f2d940d793b68b4b0b254b652bf42e13dbd189ba7
MD5 hash:
786afe844ec1723b635cace747b60efd
SHA1 hash:
fa647a584a7fcad392147a182e3a2435b3ad5bb9
Link:
https://www.unpac.me/results/94a4d14c-4f62-46f1-9911-10b7dc724e00/
SH256 hash:
79360bd450cc357a3914c9dbc50d99e6bf4502286c91853e05a120937d751bdb
MD5 hash:
44012699a551696e61d4c4a5e697c674
SHA1 hash:
3e40623a42f586c22bb40cdf8aa8b0fe399da274
Link:
https://www.unpac.me/results/94a4d14c-4f62-46f1-9911-10b7dc724e00/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/94a4d14c-4f62-46f1-9911-10b7dc724e00/
SH256 hash:
c8a52cd96047db62def2fc5fa5b631751d4444388918a42bbb8dcd0ba3e025ed
MD5 hash:
477f81c8e93d5792fb850bbf07f3fa10
SHA1 hash:
fa29e3d5f2d36185a99c00f155fed592da0100cd
Link:
https://www.unpac.me/results/94a4d14c-4f62-46f1-9911-10b7dc724e00/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c8a52cd96047/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/c8a52cd96047db62def2fc5fa5b631751d4444388918a42bbb8dcd0ba3e025ed

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
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/300205/

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