MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c6ff402225f5d53a08b8bdac4f6a21c91954f0bf8084b25d018e994cb5367b97. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c6ff402225f5d53a08b8bdac4f6a21c91954f0bf8084b25d018e994cb5367b97
SHA3-384 hash: a8c8e170ba0b7a67e5fc61301d9ad660622aa8879fc738421c08f8cb5bfca34cf67a55d4220c105c9730482869669ab6
SHA1 hash: afa4a547aac220c213c6e64b73220976b3be17a3
MD5 hash: 1bafac6637f3bb17204b346f479409d5
humanhash: indigo-juliet-utah-double
File name:krcwaFEzYPAEhMD.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:862'208 bytes
First seen:2021-07-24 06:51:31 UTC
Last seen:Never
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:OdUc6HpmFXSgD3YT/5paA+r0TBmLIU80ZOC6:EM8FXSgDm5fYMmLIQO5
Threatray 7'008 similar samples on MalwareBazaar
TLSH T18A05A1A72E567453F01181B3B012DAACAEF42E1D3DC08D1715DEBA87F932282999DD1F
dhash icon 4c33d8d4d4d8324c (40 x AgentTesla, 23 x RedLineStealer, 15 x RemcosRAT)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
166
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
krcwaFEzYPAEhMD.exe
Verdict:
Malicious activity
Analysis date:
2021-07-24 06:53:20 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/a4eb60b4-c3f0-497f-b4f6-9c95561efaf6

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/173829/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.7424.UNOFFICIAL
Create hunting rule

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:
Vendetta
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/eae4cce9-ec8b-460b-939b-fa4e8d4ff09e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/821159
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 453570 Sample: krcwaFEzYPAEhMD.exe Startdate: 24/07/2021 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Yara detected FormBook 2->40 42 4 other signatures 2->42 8 krcwaFEzYPAEhMD.exe 3 2->8         started        process3 file4 28 C:\Users\user\...\krcwaFEzYPAEhMD.exe.log, ASCII 8->28 dropped 46 Tries to detect virtualization through RDTSC time measurements 8->46 48 Injects a PE file into a foreign processes 8->48 12 krcwaFEzYPAEhMD.exe 8->12         started        15 krcwaFEzYPAEhMD.exe 8->15         started        17 krcwaFEzYPAEhMD.exe 8->17         started        19 2 other processes 8->19 signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 12->56 58 Maps a DLL or memory area into another process 12->58 60 Sample uses process hollowing technique 12->60 62 Queues an APC in another process (thread injection) 12->62 21 explorer.exe 12->21 injected process8 dnsIp9 30 www.engraved-plate.com 208.38.187.16, 80 WOW-DATACENTER-NETUS United States 21->30 32 thedonationcard.com 184.168.131.241, 49742, 80 AS-26496-GO-DADDY-COM-LLCUS United States 21->32 34 www.thedonationcard.com 21->34 44 System process connects to network (likely due to code injection or exploit) 21->44 25 cmd.exe 21->25         started        signatures10 process11 signatures12 50 Modifies the context of a thread in another process (thread injection) 25->50 52 Maps a DLL or memory area into another process 25->52 54 Tries to detect virtualization through RDTSC time measurements 25->54
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c6ff402225f5d53a08b8bdac4f6a21c91954f0bf8084b25d018e994cb5367b97/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-07-24 06:52:08 UTC
AV detection:
24 of 27 (88.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=y37uairf6xktucfyxwwe62rbzemvj4f7qcclexibr2muznjwpolq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
149bc7bb666f2eabcf946822bd316709ddeeef787f059687415f98c71ad47783
Formbook
2e33d05840368e708c642f732f8237c8a7315a6bb4fbd618015b59b8271e9954
Formbook
441a0a46bcdfdee8c8b6761798e75a65204eac43b47547557604f80f26b87e95
Formbook
489e0e46a5df58a3144cd7a3ecb1fd0e29aa2db5060084ec774f1d2c8c763fd9
Formbook
5ec36ac5ba843f29bb0dc75d7d527ab9cee34a681bad704a89fd5ed12cdea337
Formbook
8241caa4d6c5a09290864492d19dee143f0f80074d370135c0f91bad01c16ee3
Formbook
9a3f71dcb9c6115db6162003e0cf63cac8d6b0ab57a998bc4ea2c2675e6400a1
Formbook
a4ed754c1a38fd8fc24bb4ec7f5da899c254df070bcc8cfd7b16778701c4b72d
Formbook
dd759c0f396781dd67e9b31cbb725e88883defe4d10698606ca9f50e1a92ffb2
Formbook
f7e1c8a641a9998b7a0ece478f086de00f15bcff13473ec26798b14659219bef
Formbook
+ 6'998 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat suricata
Link:
https://tria.ge/reports/210724-k1vfkdhrsj/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.kkkwhitepride.com/66op/
Unpacked files
SH256 hash:
ccc7d177b4f2923644d61091d8a037b3f565db232e5da14a43ca6e52854baaf3
MD5 hash:
0600df586bdd7bc783ec0b7a9941d759
SHA1 hash:
da2fe3549b4e7bd8a45c9acc25a64cc413d39ca6
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0973665a-2060-4fe8-9208-a409bdaef2ed/
Parent samples :
dd759c0f396781dd67e9b31cbb725e88883defe4d10698606ca9f50e1a92ffb2
c6ff402225f5d53a08b8bdac4f6a21c91954f0bf8084b25d018e994cb5367b97
f7e1c8a641a9998b7a0ece478f086de00f15bcff13473ec26798b14659219bef
SH256 hash:
c362729899c5956cfa9fc3bcf9b21ac72066a1b84a497ceb1281f76e2f55c54b
MD5 hash:
0327d1374a5ce015ad9c83c5de76e823
SHA1 hash:
e521349d9e96a4191248747c42c78b6f88fc8f63
Link:
https://www.unpac.me/results/0973665a-2060-4fe8-9208-a409bdaef2ed/
SH256 hash:
5cafb8caa12fbc98f82c8e5d6480083ca4ac7b59518cec487c2e185b248f1f32
MD5 hash:
2e88a77f9419705195694be468c5f7ec
SHA1 hash:
b45416f4b6e41310f736b76fcd49b13ac322ec0f
Link:
https://www.unpac.me/results/0973665a-2060-4fe8-9208-a409bdaef2ed/
SH256 hash:
c6ff402225f5d53a08b8bdac4f6a21c91954f0bf8084b25d018e994cb5367b97
MD5 hash:
1bafac6637f3bb17204b346f479409d5
SHA1 hash:
afa4a547aac220c213c6e64b73220976b3be17a3
Link:
https://www.unpac.me/results/0973665a-2060-4fe8-9208-a409bdaef2ed/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/c6ff402225f5d53a08b8bdac4f6a21c91954f0bf8084b25d018e994cb5367b97

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
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 c6ff402225f5d53a08b8bdac4f6a21c91954f0bf8084b25d018e994cb5367b97

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/173829/

Comments