MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bc7c349c8520b727dcf45df70ada1e63e5d38a5ffe3f314b6c61a9971b5f7cea. 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: bc7c349c8520b727dcf45df70ada1e63e5d38a5ffe3f314b6c61a9971b5f7cea
SHA3-384 hash: 776b6abefde92268e0f008f3e1c93773f307e6ba648b6cf9f93a0bbba94e5172ed7f95b4c065f9911e53bdd540c5e2c3
SHA1 hash: b23ac2d08197086da52eba44741822a0f62048e6
MD5 hash: 907712ce2526aca772cac76d1d8672ac
humanhash: high-dakota-hamper-triple
File name:kxNrcrVHF8114F5.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'004'032 bytes
First seen:2021-07-14 21:06:01 UTC
Last seen:2021-07-14 21:49:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:qBoSHZ+NBgNr1+Ve9vlOKG4hGRBU16o3/sMzc263AsXs/:bNBgNhllOKG0eB2tY263AsXs/
Threatray 6'466 similar samples on MalwareBazaar
TLSH T14625AE2E23FDA74AF637FF31AF95EA449FA627B942159C4E58C006472420C42BDA7C35
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
117
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
kxNrcrVHF8114F5.exe
Verdict:
Malicious activity
Analysis date:
2021-07-14 21:08:55 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/b7a3fa7d-9ca7-4a77-9047-0547b119f8cf

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/171831/
Detection(s):
SecuriteInfo.com.MachineLearning.Anomalous.95.11267.4396.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:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4eefb6fa-101d-4fce-a627-5e27bbdc8591
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/816587
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
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 submitted file
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 AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 448998 Sample: kxNrcrVHF8114F5.exe Startdate: 14/07/2021 Architecture: WINDOWS Score: 100 31 www.jalhucaperu.com 2->31 33 www.aaareplicamall.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 7 other signatures 2->47 11 kxNrcrVHF8114F5.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\kxNrcrVHF8114F5.exe.log, ASCII 11->29 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 kxNrcrVHF8114F5.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 35 www.signobrations.com 199.34.228.68, 49751, 80 WEEBLYUS United States 18->35 37 www.aiwop.com 64.190.62.111, 49749, 80 NBS11696US United States 18->37 39 14 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 raserver.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/bc7c349c8520b727dcf45df70ada1e63e5d38a5ffe3f314b6c61a9971b5f7cea/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-07-14 17:44:29 UTC
AV detection:
12 of 29 (41.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xr6djhefec3spxhulx3qvwq6mps5hcs77y7tcs3mmguzog27ptva._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0be0e163dc73ff0278c2a645bb15a50db6e59bf1aa293dd718c96c27f73f8db7
Formbook
0e5e0b70c6db438a67db5ac483b0a4fc904742bc98ffb6d02b0595c868f3cdf0
Formbook
1c13ac6991e35e6948e4c926f79bac0a0c669f8c2709eb1e5fcea146e5a4d3ea
Formbook
2bc537df04cceb724dbfd9b6bb93a837f184bf5f1b759b3cb9f474d94a1acec2
Formbook
3638ac885ef63f3b5bfadd95b0f43c34c3854e2483adde873b3d5fca7a831632
Formbook
3c5cf190ba17e8138feadf46a81dbdafff69ecd8b9122aaf4967fbd9aa79c1f6
Formbook
94b5ba8b9cf0c9b6d3e790aadc37b8afb3099af0d151761d5c7196dd6fb81539
Formbook
9eb08a4fd35569b3034dbe07ba5334ec8c5bfe262d589bb123e838dbcf688e08
Formbook
f3a5f73b6bef3d25071f3e2fb2f3c6402683d2770539e5b046bdc7b485ce3c0b
Formbook
fd578808fbbd44d564598d6c46f512b9511531402f720afc67bcbf6d4d42f59a
Formbook
+ 6'456 additional samples on MalwareBazaar
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210714-cv923nmtex/
Behaviour
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
Malware Config
C2 Extraction:
http://www.hokutiki.com/cogt/
Unpacked files
SH256 hash:
4adbbe55ea6f960c5a2c82e44509ef80287326fe051aa57d52f3434dd1d44965
MD5 hash:
06d28676b30e039319afa26d07d8f4c2
SHA1 hash:
e9b8e1557c8609e827a03e35a8f350d73830bdb9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/54bc64f4-b5ca-47e5-b3c7-cc2833427ed8/
Parent samples :
bc7c349c8520b727dcf45df70ada1e63e5d38a5ffe3f314b6c61a9971b5f7cea
10adbd71341f29b48d9e0c0d89ce21e1cd8ffcd04898026e64b4a22d87a1d85e
fbeb9b62ff737a87fe38709d075f3fee34502b01262480cf5a014efaab4f7075
SH256 hash:
13e3aca2d328582e46d65f8d838e33f4024425e2e13e77ee1b3d0f8d16103309
MD5 hash:
bf5b133247197e946576cf3f9bd429b6
SHA1 hash:
a28197dcaddf163335d23740dedc927d8d2a74e1
Link:
https://www.unpac.me/results/54bc64f4-b5ca-47e5-b3c7-cc2833427ed8/
SH256 hash:
3ccde6fc8ce7a843ea73a513570178f9ec12a15103ee34262460b6404b89b0df
MD5 hash:
f15ef1548d0922904f65f3c88aa02e22
SHA1 hash:
4157f2d492d9e5be1c4f6517ae5ae4867b27f794
Link:
https://www.unpac.me/results/54bc64f4-b5ca-47e5-b3c7-cc2833427ed8/
SH256 hash:
874f8f678fb473ddbe2a1343f62b99a053a669b85e723b04052f45d68ef8f1fe
MD5 hash:
922bdb03d6aba9f131ce65c0d1edac28
SHA1 hash:
081f7b4b713ffcb83ec424900a10ba1fec94d4b0
Link:
https://www.unpac.me/results/54bc64f4-b5ca-47e5-b3c7-cc2833427ed8/
SH256 hash:
bc7c349c8520b727dcf45df70ada1e63e5d38a5ffe3f314b6c61a9971b5f7cea
MD5 hash:
907712ce2526aca772cac76d1d8672ac
SHA1 hash:
b23ac2d08197086da52eba44741822a0f62048e6
Link:
https://www.unpac.me/results/54bc64f4-b5ca-47e5-b3c7-cc2833427ed8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/bc7c349c8520b727dcf45df70ada1e63e5d38a5ffe3f314b6c61a9971b5f7cea

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 bc7c349c8520b727dcf45df70ada1e63e5d38a5ffe3f314b6c61a9971b5f7cea

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/171831/

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