MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af3d81a999638a78926441febe1cf0523fb5b8b596575de5dab064be494e4681. 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 2 File information Comments
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SHA256 hash: af3d81a999638a78926441febe1cf0523fb5b8b596575de5dab064be494e4681
SHA3-384 hash: 249b36390916aeacd03ab03d2e858249d003063749e27fd66daedf00748bcf6821205be3c24f4c3c17f3899ec20f2dd0
SHA1 hash: a60e5e877f0183243984086f2ae3770e86e069d1
MD5 hash: 8f14ac2262ece5e26730a80bd62db426
humanhash: potato-floor-zebra-kentucky
File name:bank details.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'452'544 bytes
First seen:2022-03-23 06:38:17 UTC
Last seen:2022-03-23 19:08:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:HveUGNp4cr4QFVxKniwyo12hMnxqnW/RK/PmCzzX3rQitiHDcZ5KeCBBWUAmFvqh:mbp4s4QFVx+ilDIaB70aCmj+OauRL
Threatray 11'186 similar samples on MalwareBazaar
TLSH T11D65A4AD311472EFC86BD0728EA85C78FB5078BB531B451390931BAEAE0D897DF540B6
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
4
# of downloads :
189
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/255352/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.39324240.10185.9073.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/623ac06ab94fb38cb4d6dfc8/reports/d2aa5afd-18a5-414b-8fc5-b9042e721741/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.
Gathering data
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/962419
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file has nameless sections
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: CMSTP Execution Process Creation
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
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: 594897 Sample: bank details.exe Startdate: 23/03/2022 Architecture: WINDOWS Score: 100 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 Antivirus detection for URL or domain 2->44 46 14 other signatures 2->46 10 bank details.exe 6 2->10         started        process3 file4 34 C:\Users\user\AppData\Roaming\tkncaw.exe, PE32 10->34 dropped 36 C:\Users\user\AppData\Local\...\tmp3385.tmp, XML 10->36 dropped 38 C:\Users\user\...\bank details.exe.log, ASCII 10->38 dropped 48 Injects a PE file into a foreign processes 10->48 14 bank details.exe 10->14         started        17 schtasks.exe 1 10->17         started        19 bank details.exe 10->19         started        21 bank details.exe 10->21         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 23 explorer.exe 14->23 injected 25 conhost.exe 17->25         started        process8 process9 27 cmstp.exe 23->27         started        signatures10 50 Self deletion via cmd delete 27->50 52 Maps a DLL or memory area into another process 27->52 54 Tries to detect virtualization through RDTSC time measurements 27->54 30 cmd.exe 1 27->30         started        process11 process12 32 conhost.exe 30->32         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/af3d81a999638a78926441febe1cf0523fb5b8b596575de5dab064be494e4681/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-03-23 06:39:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
28
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=v46ydkmzmofhreteih7l4hhqki73lofvszlv3zo2wbsl4skoi2aq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
07ea6a87a1ac2a5363e7756a8994f7ed8b971b94cef918803ab3b6dbe9e6b845
Formbook
3a1b706adecf798ffa11002e153bad33e9f82e6a9da82f7777c27d2cf7b23b0d
Formbook
40fa9ba8113198bf73af0101d0c0275ed1ef014a15fd83457dbdbd29e80f99a8
Formbook
47100e432f02eea97ec7e7ea42954b8c713eefd11380cc79d459804ba4719560
Formbook
66ed20e609a1c10376f30415f4f2a03aa274fbdaaa12925dcc81ed74bfb7fdfa
Formbook
739e94a41234bd028fae27705c6d0ff5d8d9925068384bcdfe4cdecc1fb36e4f
Formbook
8fb567155619feef229141bb4a87119700061289822b50e682534a2051c5a4f8
Formbook
952fbe116a1aac4f0082519a0dc920ee5dc48e58fe85abcc27b82ecc0ac4e54f
Formbook
ae7d4af56f79abdb03b343dfae7f614e52b4b3e842e1d11cc0c2e0953e74679d
Formbook
+ 11'176 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:brq4 loader rat suricata
Link:
https://tria.ge/reports/220323-henbpsdbfl/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
9eb66ba33e6929dc8f394fce4ed15ad120386cc7bcbc1e3cacf2ab171a8cf5c4
MD5 hash:
4dcb380a72a4303030f334c4ebcea173
SHA1 hash:
3c04dcf6f8485b32ce0800f97e2df97963493400
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/51471abe-9fae-4916-99a6-ec947917eba1/
Parent samples :
1847e8de135d28fcb37ace0a43ed8f0f672e68fad31c5b6aea53fb79bde06a93
af3d81a999638a78926441febe1cf0523fb5b8b596575de5dab064be494e4681
SH256 hash:
d378705cbc75e771624789b0c3123bcd8ddc5224943390fc64ca2508d23324ae
MD5 hash:
20d99962241f480529a10d51e9cdf43c
SHA1 hash:
b38e7dbaa662c8ba6ee0d728716475a23f71b3aa
Link:
https://www.unpac.me/results/51471abe-9fae-4916-99a6-ec947917eba1/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/51471abe-9fae-4916-99a6-ec947917eba1/
SH256 hash:
af3d81a999638a78926441febe1cf0523fb5b8b596575de5dab064be494e4681
MD5 hash:
8f14ac2262ece5e26730a80bd62db426
SHA1 hash:
a60e5e877f0183243984086f2ae3770e86e069d1
Link:
https://www.unpac.me/results/51471abe-9fae-4916-99a6-ec947917eba1/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/af3d81a999638a78926441febe1cf0523fb5b8b596575de5dab064be494e4681

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 af3d81a999638a78926441febe1cf0523fb5b8b596575de5dab064be494e4681

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/255352/

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