MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 abaea9c3b27ce7b16be954313ac278a2858afdec6e8baa408e6a6944e30ee4a0. 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: abaea9c3b27ce7b16be954313ac278a2858afdec6e8baa408e6a6944e30ee4a0
SHA3-384 hash: f678cbd67d80e98a1f9219fad3908346af00ef0fa4c84b2d38479bf1e565055467a1222031f73c12132e678e3165fb25
SHA1 hash: ff72f5a61dcf30984e58923025881b6fdb7c1ded
MD5 hash: 13826bac65560d9e0e21314429be66da
humanhash: winter-sierra-bakerloo-hydrogen
File name:JSKSKKER.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:395'800 bytes
First seen:2022-06-27 09:22:26 UTC
Last seen:2022-06-27 10:04:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:sdwrhL5D5eud3henL2/DySeDQeQ5IaSkXflb9KnYFPlCcl:wGRsznCxvlQMNCcl
Threatray 5'648 similar samples on MalwareBazaar
TLSH T1C184BF1FBA8C5B4CC7488AB5B0F745300392EFA36632E60179C4FEAD497136E6E456C9
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 6ccccc9cc4d8e8f4 (41 x Formbook, 34 x AgentTesla, 3 x AveMariaRAT)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
234
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/283510/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated overlay packed wacatac
Link:
https://www.filescan.io/uploads/62b976f77e9a4f0a86e81de9/reports/a1dfc611-d440-415a-81e6-a842c266e4f2/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/86c3864e-1426-4eaa-956f-9ad37e9e8aac
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1020281
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 652778 Sample: JSKSKKER.exe Startdate: 27/06/2022 Architecture: WINDOWS Score: 100 35 www.jzcrjyw.com 2->35 45 Multi AV Scanner detection for domain / URL 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for URL or domain 2->49 51 7 other signatures 2->51 11 JSKSKKER.exe 1 2->11         started        15 explorer.exe 1 2->15         started        signatures3 process4 file5 33 C:\Users\user\AppData\...\JSKSKKER.exe.log, ASCII 11->33 dropped 59 Writes to foreign memory regions 11->59 61 Allocates memory in foreign processes 11->61 63 Injects a PE file into a foreign processes 11->63 65 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->65 17 cvtres.exe 11->17         started        signatures6 process7 signatures8 37 Modifies the context of a thread in another process (thread injection) 17->37 39 Maps a DLL or memory area into another process 17->39 41 Sample uses process hollowing technique 17->41 43 2 other signatures 17->43 20 explorer.exe 17->20 injected process9 process10 22 WWAHost.exe 20->22         started        25 autofmt.exe 20->25         started        signatures11 53 Modifies the context of a thread in another process (thread injection) 22->53 55 Maps a DLL or memory area into another process 22->55 57 Tries to detect virtualization through RDTSC time measurements 22->57 27 cmd.exe 1 22->27         started        29 explorer.exe 1 119 22->29         started        process12 process13 31 conhost.exe 27->31         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/abaea9c3b27ce7b16be954313ac278a2858afdec6e8baa408e6a6944e30ee4a0/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-27 08:21:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=voxktq5sptt3c27jkqytvqtyukcyv7pmn2f2uqeonjuujyyo4sqa._file
Verdict:
malicious
Similar samples:
1ad3f9f666e42833e70912efdc9b973c1b54d714661c0cb508f39a09b3b673de
Formbook
2508c1dcc08421741f5c2ad81aea72148d5a7b23bdf5fc84292b914a56448ad6
Formbook
2d54fe014e47421a3dbb41e52aab07e514b709e7aeb7d8c23a0dbfc4da9fcebd
Formbook
6fa9bc77a6e47e1f63d3a966c449ece9471c8ba4bf9cd7d3f8ac186ca666c6d7
Formbook
87126e672dcbafa6827503b7c2de467eda7f48367dba3db2fe4209f509c6cf6d
Formbook
ee49f3d4c142ced06e9ce1d55cbccef59af45da7b21c123ddaf51c997b55f83e
Formbook
f8f459b89f367222f10938629a6c5fae6a8066b00de9f123ce53fa586314a0e8
Formbook
+ 5'638 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:k0dn loader persistence rat spyware stealer suricata
Link:
https://tria.ge/reports/220627-lcfqmaaahr/
Behaviour
Modifies Internet Explorer settings
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
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
eb1bc8ce5d20bc63003be8e9bf7a01185040f631e988f2574346936542fb0b08
MD5 hash:
4fbadbe3906d6d029a770616e042a91b
SHA1 hash:
e28889864400b184a9e11c4e365899e2d9f0c7f2
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
XLoader
Create hunting rule
Link:
https://www.unpac.me/results/f4623eba-ea1b-479c-9075-bc0debb459a6/
Parent samples :
444785a229ad49a95ce3ac8e0b1e0485fb7dce76d521331397702cdfae648607
63a24a782f2d4f31f57886852f84eda1eea782ab040cebb37d9325c8da6f2b93
6f953b35fe9f1aa984e06446bc6353ecf594c6dbe11e7b07be43bd6e0eb8ad9a
0fcd6e9b28b7605ca9775462603f308e1a598528ff0674e297d66253619f42f4
1623f32f1937aa2290ac5c0cd3c132be192d4fad1782768bf1b705272e245ca5
abaea9c3b27ce7b16be954313ac278a2858afdec6e8baa408e6a6944e30ee4a0
SH256 hash:
efa0c41c6aafc1ff4c49b92f393ae4c1e3b7162b8eb90e846f0e94283fd3ff00
MD5 hash:
c01300dbd10f35c77cd06e75a034bc3e
SHA1 hash:
04eda760ca745e5aed46e35c64e0c78db9b86f96
Link:
https://www.unpac.me/results/f4623eba-ea1b-479c-9075-bc0debb459a6/
SH256 hash:
abaea9c3b27ce7b16be954313ac278a2858afdec6e8baa408e6a6944e30ee4a0
MD5 hash:
13826bac65560d9e0e21314429be66da
SHA1 hash:
ff72f5a61dcf30984e58923025881b6fdb7c1ded
Link:
https://www.unpac.me/results/f4623eba-ea1b-479c-9075-bc0debb459a6/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/abaea9c3b27ce7b16be954313ac278a2858afdec6e8baa408e6a6944e30ee4a0

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:MALWARE_Win_zgRAT
Create hunting rule
Author:ditekSHen
Description:Detects zgRAT
Rule name:meth_get_eip
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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe abaea9c3b27ce7b16be954313ac278a2858afdec6e8baa408e6a6944e30ee4a0

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/283510/

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