MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5a1bd7caffd2c2663dc81fe2a635472b1dbd781f0cdc51268e9cf6d5e6e8ab79. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
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SHA256 hash: 5a1bd7caffd2c2663dc81fe2a635472b1dbd781f0cdc51268e9cf6d5e6e8ab79
SHA3-384 hash: 7a782e48bd6665129e765b85bfbf096f4977ef3264833c5d349a023aa3a9a5c2284e67ddf5ed37e8b0248c6876c8d760
SHA1 hash: 72b56c3d992228ee3553294e72150d380caf0b6b
MD5 hash: ea04869ec6efd644e3cbe0c7925e7521
humanhash: stream-winter-hydrogen-victor
File name:Purchase Order.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:662'016 bytes
First seen:2022-05-05 14:02:32 UTC
Last seen:2022-05-05 14:44:29 UTC
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:ee+V1c8kY7tpT8ukOVvXGPmIhs9QoyZMAEfx0mHGqLTSi2L2I:+U8kY69E5kqLTSi2
Threatray 15'516 similar samples on MalwareBazaar
TLSH T1BCE4234073234B37E67537F260219B5267F22F89B0A1F39DACB62ACF8556B560138B53
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 :
2
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Purchase Order.exe
Verdict:
Malicious activity
Analysis date:
2022-05-05 15:04:44 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/2f3b05bf-a1e8-4ebd-a23c-2e08307b102c

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/268905/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.14617.27009.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit greyware obfuscated packed
Link:
https://www.filescan.io/uploads/6273d933801e66012b2ab7ee/reports/d8d4776e-9603-49ad-a7f4-1dc70eeead6e/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f9b4211e-0889-4acb-bdc7-f6cb58e0ba27
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/988547
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.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
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
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: 621043 Sample: Purchase Order.exe Startdate: 05/05/2022 Architecture: WINDOWS Score: 100 46 Malicious sample detected (through community Yara rule) 2->46 48 Multi AV Scanner detection for dropped file 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 13 other signatures 2->52 10 Purchase Order.exe 7 2->10         started        process3 file4 38 C:\Users\user\AppData\...\UjwNHcComNw.exe, PE32 10->38 dropped 40 C:\Users\...\UjwNHcComNw.exe:Zone.Identifier, ASCII 10->40 dropped 42 C:\Users\user\AppData\Local\...\tmpF684.tmp, XML 10->42 dropped 44 C:\Users\user\...\Purchase Order.exe.log, ASCII 10->44 dropped 54 Adds a directory exclusion to Windows Defender 10->54 56 Injects a PE file into a foreign processes 10->56 14 Purchase Order.exe 10->14         started        17 powershell.exe 24 10->17         started        19 powershell.exe 25 10->19         started        21 3 other processes 10->21 signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 23 explorer.exe 14->23 injected 25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        29 conhost.exe 21->29         started        process8 process9 31 msiexec.exe 23->31         started        signatures10 66 Self deletion via cmd delete 31->66 68 Modifies the context of a thread in another process (thread injection) 31->68 70 Maps a DLL or memory area into another process 31->70 34 cmd.exe 31->34         started        process11 process12 36 conhost.exe 34->36         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5a1bd7caffd2c2663dc81fe2a635472b1dbd781f0cdc51268e9cf6d5e6e8ab79/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-05 09:01:45 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
20 of 41 (48.78%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lin5psx72lbgmpoid7rkmnkhfmo326a7btofcjuott3nlzxivn4q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
5c4b6b6b72e020bea0a32b9ca0542bd404e91eff6344648aae077ad332593744
Formbook
7b3be400d99b473afc9f2bdf46477b61736a71db20cd9d1137b0cab4d4aaeff9
Formbook
9ce0d52eefea098cc0d81975729ac54582ef202a036cb926f886e0b8cb9ae869
Formbook
a3d145e3c72db7ea3e18a306410a0445222a8ce83235794dc404dd470843caf2
Formbook
a9915e261e819e5388755f6e20a93b55c096eb7b81b930c7212a77be734a97b2
Formbook
b0b1f27468552599b6e685345007b1fdbea80c2c60a914a01a6e0abdd35fcdf5
Formbook
beab53a78651513011c1b0374269a4a282a995650cb9bc7063ae999628e578a2
Formbook
cd0c02c985600efee1edc7dcca8808cdf06f3ac1d52427d39c2931d2472caa6a
Formbook
+ 15'506 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:o27j evasion rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220505-rcnzwsahgm/
Behaviour
Creates scheduled task(s)
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Checks computer location settings
Deletes itself
Looks for VMWare Tools registry key
Formbook Payload
Looks for VirtualBox Guest Additions in registry
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
1e1f574adb1ccbb65908d2d875dfb767d5408385b3cbdbc56a2008586c81f88f
MD5 hash:
cace93ae67f2039a3838bc00a76bf36c
SHA1 hash:
b133f51c2106edcdf7d0fe412a0d2472d912d59b
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/fb6ff916-7058-4acf-8a37-59ea167d40fa/
Parent samples :
5b8124423be6af37ad74816af0d1df049bc6d740117e934947b067d5fa61eb0b
5a1bd7caffd2c2663dc81fe2a635472b1dbd781f0cdc51268e9cf6d5e6e8ab79
04e123cec63f36e0860b6917805f83fe0fedc68ea1e5645747936743e83f6fd3
SH256 hash:
35fb8b3b77f6d857559a36e561c25e2fdd4337921587f22b7d325b96cf871ddc
MD5 hash:
4067c2dbda678fc6a2d2f2800a8d4dbb
SHA1 hash:
e8c39f8dea04a5f39f1b2a0726ab71c361dd3bd6
Link:
https://www.unpac.me/results/fb6ff916-7058-4acf-8a37-59ea167d40fa/
SH256 hash:
8310c66877f83c71d7eeec118baaf8c853f9e239714254dcbb2888e26543a652
MD5 hash:
eff5f00e5e265f559631b9ca52effe42
SHA1 hash:
e5225bc64ea2340fc66b8822d944d6ca12bed590
Link:
https://www.unpac.me/results/fb6ff916-7058-4acf-8a37-59ea167d40fa/
SH256 hash:
044e6e22943ac21887eaef4daf70bc43b8d7b54b7160ecc2e0b6ff77a6832a99
MD5 hash:
0512fe61b5e75a5aa25f0c17882292cd
SHA1 hash:
3b05ecfbb15a15fd46a9d9b588620454b6361745
Link:
https://www.unpac.me/results/fb6ff916-7058-4acf-8a37-59ea167d40fa/
SH256 hash:
5a1bd7caffd2c2663dc81fe2a635472b1dbd781f0cdc51268e9cf6d5e6e8ab79
MD5 hash:
ea04869ec6efd644e3cbe0c7925e7521
SHA1 hash:
72b56c3d992228ee3553294e72150d380caf0b6b
Link:
https://www.unpac.me/results/fb6ff916-7058-4acf-8a37-59ea167d40fa/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/5a1bd7caffd2/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/5a1bd7caffd2c2663dc81fe2a635472b1dbd781f0cdc51268e9cf6d5e6e8ab79

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:pe_imphash
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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 5a1bd7caffd2c2663dc81fe2a635472b1dbd781f0cdc51268e9cf6d5e6e8ab79

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/268905/

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