MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71f17fcf7ab7d74c32f6a1ed20f4315805847ebc6402b808ffe3fd42d0950cb5. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 71f17fcf7ab7d74c32f6a1ed20f4315805847ebc6402b808ffe3fd42d0950cb5
SHA3-384 hash: 6c526bb75f75907437479d1d82b40f510336d061b5656e81435b5a192b9f4029c486be2cf50c904dfdcc1c39c2e0d9e8
SHA1 hash: b6fbd94a169583020b5a87d5e8e33339aed2927f
MD5 hash: 1069db64b919fb975462630465a8152e
humanhash: iowa-double-muppet-hotel
File name:Halkbank.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:617'984 bytes
First seen:2023-08-10 16:44:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:cGTIYlV2FDqeE3j0NxQfqBbRWmjcCg+4s5kwmJPIf9k3jNB+xyljxrPMA6NetF:7IYlVsGp3jDyBFjjcC8s+FR7xBMMj5uN
Threatray 16 similar samples on MalwareBazaar
TLSH T169D42380B3E88A1CDEBAA73DF47019045470A50E9476E60F541827662DBFF74AB027FB
TrID 66.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.5% (.EXE) Win64 Executable (generic) (10523/12/4)
5.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.0% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter abuse_ch
Tags:exe FormBook geo Halkbank TUR

Intelligence

File Origin
# of uploads :
1
# of downloads :
273
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Halkbank.pdf.exe
Verdict:
Suspicious activity
Analysis date:
2023-08-10 16:53:22 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/04ef2730-8614-4fb8-a5f9-7cf4fada35b1

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/441983/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Launching a process
Restart of the analyzed sample
Adding an exclusion to Microsoft Defender
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/71f17fcf7ab7d74c32f6a1ed20f4315805847ebc6402b808ffe3fd42d0950cb5
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/a6f34c4a-ac39-4870-b49c-3ffafd762b6a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1289544
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Scheduled temp file as task from temp location
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1289544 Sample: Halkbank.pdf.exe Startdate: 10/08/2023 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Sigma detected: Scheduled temp file as task from temp location 2->36 38 Multi AV Scanner detection for submitted file 2->38 40 6 other signatures 2->40 7 Halkbank.pdf.exe 7 2->7         started        11 gmuCEyzNVOXTrP.exe 5 2->11         started        process3 file4 30 C:\Users\user\AppData\...\gmuCEyzNVOXTrP.exe, PE32 7->30 dropped 32 C:\Users\user\AppData\Local\...\tmp4A45.tmp, XML 7->32 dropped 42 Uses schtasks.exe or at.exe to add and modify task schedules 7->42 44 Adds a directory exclusion to Windows Defender 7->44 46 Injects a PE file into a foreign processes 7->46 13 Halkbank.pdf.exe 7->13         started        16 powershell.exe 18 7->16         started        18 schtasks.exe 1 7->18         started        48 Multi AV Scanner detection for dropped file 11->48 50 Machine Learning detection for dropped file 11->50 20 schtasks.exe 1 11->20         started        22 gmuCEyzNVOXTrP.exe 11->22         started        signatures5 process6 signatures7 52 Maps a DLL or memory area into another process 13->52 24 conhost.exe 16->24         started        26 conhost.exe 18->26         started        28 conhost.exe 20->28         started        process8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/71f17fcf7ab7d74c32f6a1ed20f4315805847ebc6402b808ffe3fd42d0950cb5/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-08-10 06:11:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ohyx7t32w7luymxwuhwsb5brlacyi7v4mqblqch74p6ufuevbs2q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
30648c0ee182936cffc123c0d03094be35f5cd6fcc246c2d173d649c2b68f132
Formbook
4246ac35e29b03cf4057457231abf222b88bf64cd65b59d7dc79d35b1953372b
Formbook
51f07741241cafeb5f72535e1b04f3b5e258a2587b5d2f1d8d67a180ec02ceee
Formbook
6a6fae0edf96bedeedb582c143934610d1c0b23f45191095b1731cf85e23b17d
Formbook
76c0b6dacffa84c683a078ee89c597f3997aac922c0fbac7e2fe1ae5c7748259
Formbook
a16bbcd964ae89f1cae59ed66c22f1009830c91db528215972952d97433bfb71
Formbook
ad1c10c027bc166ee2c44c5c041680e71b56818b3ede8acffe20e94c4e754997
Formbook
afaeeb8f276bbc3a0e313afd63200cc6437d4c344a658ce3ee0582a8b68a7a1c
Formbook
cf58f75317f4bdf3150cf37739edc9e76952652f4104e16198f3462f0912859d
Formbook
eac176276ac9472b58ad204d92036f532ce91bc1aa72c5e20bce31743fe612d7
Formbook
+ 6 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/230810-t9etlagh6t/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
b4ca3a7af2137e6471f822cf7ae765db8716890ee8212a56f7dc65689f281687
MD5 hash:
e43b1bf572e4125421be77bbb578e0e6
SHA1 hash:
67965b1a6f8e38daa37f6b26245b426fdf2cfc16
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/19360869-4c95-4bcd-8ab4-72313ee289d4/
Parent samples :
71f17fcf7ab7d74c32f6a1ed20f4315805847ebc6402b808ffe3fd42d0950cb5
f9c4add410b55fb7a5b176a3f71761bbdc6b138f6e7a2f1e39f8ee094dd3b992
b184755ffe990f3f5ab51c4d7b2bc1e4ec8f1839a4b9187dad2167c585018a37
SH256 hash:
9d231f4a38669cd88c9122ec387b1ea01e5c151a4d4b5df7d2167c2ee5a9ae89
MD5 hash:
88952f66fd4eeac38eff4aa5ee775c21
SHA1 hash:
d18306823c3be272b6eaa262222d3637f724d229
Link:
https://www.unpac.me/results/19360869-4c95-4bcd-8ab4-72313ee289d4/
SH256 hash:
593fcb28582253baea78d5116993972bfe80980decb25c1ec73cf9718e2df10f
MD5 hash:
cc63c0e6b286bff6180ec02173f93853
SHA1 hash:
ef0b30c18d33846a2bd86bf1a83f1c1c1e20b4e6
Link:
https://www.unpac.me/results/19360869-4c95-4bcd-8ab4-72313ee289d4/
SH256 hash:
504410fd6158a7346f5a2e7b7714203b329d46dab5d129719410d5c325122804
MD5 hash:
74ed681a2d7aed1dae5627d4367474f8
SHA1 hash:
cad2df636d3f0710f69fdb18cbae03a332341dd3
Link:
https://www.unpac.me/results/19360869-4c95-4bcd-8ab4-72313ee289d4/
SH256 hash:
8973ec20883b3d45af6c843de26bd764bb3ca9346ffe2def89942b1a973f16f0
MD5 hash:
67cda3ec4bee9bf8bb35ea857ac9a5d1
SHA1 hash:
6ca5037103de3a0d69b07610cdb9a4f7ed70c643
Link:
https://www.unpac.me/results/19360869-4c95-4bcd-8ab4-72313ee289d4/
SH256 hash:
71f17fcf7ab7d74c32f6a1ed20f4315805847ebc6402b808ffe3fd42d0950cb5
MD5 hash:
1069db64b919fb975462630465a8152e
SHA1 hash:
b6fbd94a169583020b5a87d5e8e33339aed2927f
Link:
https://www.unpac.me/results/19360869-4c95-4bcd-8ab4-72313ee289d4/
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/71f17fcf7ab7d74c32f6a1ed20f4315805847ebc6402b808ffe3fd42d0950cb5

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 71f17fcf7ab7d74c32f6a1ed20f4315805847ebc6402b808ffe3fd42d0950cb5

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/441983/

Comments