MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4893802fa91177b1f87232416c6788e354ef9085dff6745debbbe66fa7c1830. 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: 10


Intelligence 10 IOCs YARA 7 File information Comments
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SHA256 hash: b4893802fa91177b1f87232416c6788e354ef9085dff6745debbbe66fa7c1830
SHA3-384 hash: 436f8961ff16ac92c2e7df6def198111ff5b3c60d7dae4633681f15807b73126b7b729fc49fef6a0858f3a5f32b1542a
SHA1 hash: f08acc8a7e7794ad5b49dd5847f25dde36cd97e4
MD5 hash: 0e8b357d42ba772001000e9d85fbae34
humanhash: ack-river-artist-beer
File name:Inquiry.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:638'464 bytes
First seen:2022-07-27 02:17:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:KUMtFuNjixgV2iNDIVfJeQO6q0H2huh+kyTwt2:KQixgV1yX06shqWT
TLSH T1BED4CF1225CBB764EB39F73813D89060AFF5EC12D205E56D2DA633968777E604E72223
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
296
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/294484/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Searching for synchronization primitives
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62e0a099989a471d3326de94/reports/9d11397a-83f1-4931-a0ae-ae484432c9c3/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/c446571d-364e-43f2-9733-b5626c33b256
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1041541
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large strings
Antivirus detection for URL or domain
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)
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)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4893802fa91177b1f87232416c6788e354ef9085dff6745debbbe66fa7c1830/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-07-27 00:15:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
20
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wsetqax2selxwh4hemsbnrtyry2u56iilx7woro6xo7gn6t4daya._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/220727-cq92yshcan/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Checks computer location settings
Blocklisted process makes network request
Unpacked files
SH256 hash:
369f9318498f82a1361538fe685db0594c697897cf8868520589492ba99ce8d7
MD5 hash:
6f61010c7152906b2f493aec20967751
SHA1 hash:
c065ee03bbf508355c2197ed700e9eac1f881f4a
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/b892629f-ccad-44b0-a4b3-c2a431d84ab8/
Parent samples :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 hash:
5e97ccd8dafcb36b3cb772f6a2fd425abcf221ab9ea1930e8c2618c95332f2c6
MD5 hash:
01800f6b045def8d90c649842f56d752
SHA1 hash:
f8434a4636d0772d01aac44bb3f9753a41f01d34
Link:
https://www.unpac.me/results/b892629f-ccad-44b0-a4b3-c2a431d84ab8/
SH256 hash:
d184648541d2347c7bb013cf4732e41f9b73d55e32d650fece35247e830ecb3a
MD5 hash:
b594fd0634577c40afef8c4ce71ba49e
SHA1 hash:
f6d1ac97c987b86c6ef9aacd4423c055b356755d
Link:
https://www.unpac.me/results/b892629f-ccad-44b0-a4b3-c2a431d84ab8/
SH256 hash:
b4893802fa91177b1f87232416c6788e354ef9085dff6745debbbe66fa7c1830
MD5 hash:
0e8b357d42ba772001000e9d85fbae34
SHA1 hash:
f08acc8a7e7794ad5b49dd5847f25dde36cd97e4
Link:
https://www.unpac.me/results/b892629f-ccad-44b0-a4b3-c2a431d84ab8/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
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.

Malspam

Formbook

Executable exe b4893802fa91177b1f87232416c6788e354ef9085dff6745debbbe66fa7c1830

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/294484/

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