MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5ca813a9176c8f6eb9394308c56858d9e27300f9c5a75c82eceae96b8defd83. 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: b5ca813a9176c8f6eb9394308c56858d9e27300f9c5a75c82eceae96b8defd83
SHA3-384 hash: 3da7e6af2259379a09ab75fbe830178fd4b27ddfb885a9adfcebad5e0a29b0f47e7b1e51c3086985598da03d33c57958
SHA1 hash: 61789ecbc2362ed7bb80eb2e86c009b889585987
MD5 hash: 2a435fc967d5178a1d6377a07c833b68
humanhash: butter-autumn-yellow-saturn
File name:Swift copy payment.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:857'088 bytes
First seen:2022-02-17 05:53:50 UTC
Last seen:2022-02-17 13:39:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:X0c5VkoSbrlIc3aHoH3lJxx0vlGL7lywzFiF/hEpd6rnn5pbRdgdwQ11HklXlPdV:abrlIdE74GnYwhiF/G36n5pbRdgdR1
Threatray 13'598 similar samples on MalwareBazaar
TLSH T1DF05BE5631EF1092C3A2ABF10FD8E8BF866AF577560F753A31812B4A8775A40DE02375
File icon (PE):PE icon
dhash icon c198989999e9b179 (16 x SnakeKeylogger, 13 x AgentTesla, 8 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
204
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/242121/
Detection(s):
SecuriteInfo.com.Variant.Strictor.262398.20976.4491.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook greyware obfuscated packed remote.exe replace.exe strictor
Link:
https://www.filescan.io/uploads/620de300875593a3ccdbcc88/reports/ac5acc39-05bb-46a1-be46-765038162603/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/941338
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
Self deletion via cmd delete
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: 573816 Sample: Swift copy payment.exe Startdate: 17/02/2022 Architecture: WINDOWS Score: 100 29 www.yuthukam.com 2->29 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 8 other signatures 2->53 10 Swift copy payment.exe 3 2->10         started        signatures3 process4 file5 27 C:\Users\user\...\Swift copy payment.exe.log, ASCII 10->27 dropped 55 Injects a PE file into a foreign processes 10->55 14 Swift copy payment.exe 10->14         started        signatures6 process7 signatures8 57 Modifies the context of a thread in another process (thread injection) 14->57 59 Maps a DLL or memory area into another process 14->59 61 Sample uses process hollowing technique 14->61 63 Queues an APC in another process (thread injection) 14->63 17 mstsc.exe 14->17         started        20 explorer.exe 14->20 injected process9 dnsIp10 37 Self deletion via cmd delete 17->37 39 Modifies the context of a thread in another process (thread injection) 17->39 41 Maps a DLL or memory area into another process 17->41 43 Tries to detect virtualization through RDTSC time measurements 17->43 23 cmd.exe 1 17->23         started        31 islaverauae.com 162.241.252.20, 49785, 80 UNIFIEDLAYER-AS-1US United States 20->31 33 www.zzgsflgw.com 165.3.38.206, 49807, 80 PEGTECHINCUS South Africa 20->33 35 3 other IPs or domains 20->35 45 System process connects to network (likely due to code injection or exploit) 20->45 signatures11 process12 process13 25 conhost.exe 23->25         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/b5ca813a9176c8f6eb9394308c56858d9e27300f9c5a75c82eceae96b8defd83/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-02-17 05:54:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
64
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wxficouro3epn24tsqyiyvufrwpcomaptrnhlsboz2xjnog67wbq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0b9e04031807f768af9714a0ff05a01ea304bdb32065743b28501eb1d19dad2e
Formbook
0f46e1c5fdbd54458ef74a762dcdf4e9a9c6caabc843025422ba903236348dfb
Formbook
3446a9d1fcd21b6e219220379f6b82cccf3cb967b9af1f9e91fa511e90eab639
Formbook
47d424c280738861bd8cf731e43137dc875d186cd277c6db8ab98f3e74453022
Formbook
503afb59d8192f6adb3e67db043eeb6459e8ec3fc117ef8e2f6690d5f0c4a12b
Formbook
640ac0fcf97c0474f805fdf150d7c539650a833e1cbb47393e188da5a1f5f5c3
Formbook
950ead10061a0d06ae1314f85d90925ed519d91ff8360236960e9abf68a99b7c
Formbook
d6a113f33599b8c821531df91dc5cd29501cab9fa911b8844a3447d0991e7362
Formbook
+ 13'588 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:6dmq loader rat
Link:
https://tria.ge/reports/220217-glw2rahga3/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Drops file in Windows directory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Unpacked files
SH256 hash:
4fd8c67e8e7327c3d4c87fc6b3798e2460487ab0ccb95f15215cb194ff0073e2
MD5 hash:
377eb9bca561856eb1ff0840742c52f1
SHA1 hash:
8a1f1787ee2165b57f44deedf4f35d9f195e1d34
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0db8b492-1e91-4364-bee4-d6622bb429f1/
Parent samples :
755519325ba730c3e0ec5cae1d3657e1e42c1327195550c6893dab51179161c9
b5ca813a9176c8f6eb9394308c56858d9e27300f9c5a75c82eceae96b8defd83
8ef4a2f7e0e66b8b84b3b8a18ad3dee9d559717f27ea2362a361405bdf68c9b7
16119a34513a37c16bc130507da88bfb5f90384bab73dc6f8559628416bb583f
e74093d3c119896418879356da45b993f61533689db4a48e6b7501bfda40be78
SH256 hash:
a3e95a603aa84f39fcb8a2a645d6d7e51dacd692640e364efc31e3bd7e1827ba
MD5 hash:
f148776b59f52f94c0298ecb1726f0a3
SHA1 hash:
fd1bc4bff0bca7683926a4b2f8977f202c5f9905
Link:
https://www.unpac.me/results/0db8b492-1e91-4364-bee4-d6622bb429f1/
SH256 hash:
442b72323376551413f3f5ff1ae17843be85027b1e65440d2a50907b70414458
MD5 hash:
088a7dd2e6cce847520e838f9da63964
SHA1 hash:
e1d372097b37f5d5e1aafdafde215653573bee1a
Link:
https://www.unpac.me/results/0db8b492-1e91-4364-bee4-d6622bb429f1/
SH256 hash:
90cbfa63f9f946d48d7af38b1382f5cbe1450071b93c3feb03d1e538ac9c435a
MD5 hash:
6246828c625d4d5938982e0ea4d8eaf9
SHA1 hash:
66cccbf3e461f799468d44ec4ef39d49b4924c9f
Link:
https://www.unpac.me/results/0db8b492-1e91-4364-bee4-d6622bb429f1/
SH256 hash:
b5ca813a9176c8f6eb9394308c56858d9e27300f9c5a75c82eceae96b8defd83
MD5 hash:
2a435fc967d5178a1d6377a07c833b68
SHA1 hash:
61789ecbc2362ed7bb80eb2e86c009b889585987
Link:
https://www.unpac.me/results/0db8b492-1e91-4364-bee4-d6622bb429f1/
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/b5ca813a9176c8f6eb9394308c56858d9e27300f9c5a75c82eceae96b8defd83

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 b5ca813a9176c8f6eb9394308c56858d9e27300f9c5a75c82eceae96b8defd83

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/242121/

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