MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c1b38391ab198fb0e2c7050a8951e65efbc818991fb710f6deeb2c76a54c734. 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 5 File information Comments
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SHA256 hash: 4c1b38391ab198fb0e2c7050a8951e65efbc818991fb710f6deeb2c76a54c734
SHA3-384 hash: 39e24449bf07eb4f50cedfc784229865720c019931114ea699b6c987953bd2070357d3683d64097d1bf39548ef7dc668
SHA1 hash: aaa650fdf71978a3143a5a8c85a57a5518c6c8e1
MD5 hash: 92f15ca5167c47451b44f08c4eb0d5a4
humanhash: north-fillet-freddie-eight
File name:INVOICE - Q0002255 - LKJIN001 (29-07-21)-pdf.exe
Download: download sample
Signature Formbook
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File size:1'329'664 bytes
First seen:2021-08-02 05:26:42 UTC
Last seen:2021-08-02 05:51:55 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 24576:MoSd76DOXfx8Dgyfx8DgFwUUNmvNTiP4t5MwDZF2L:+d76e58Dgy58DgFw2fTZQ
Threatray 7'313 similar samples on MalwareBazaar
TLSH T19355D09E3440EABBD61C27F56514D88043B9A814D227FBEF7E6221B623E1A794F14CF1
dhash icon b271e8e4d4ccf070 (22 x AgentTesla, 14 x Formbook, 11 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
812
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
INVOICE - Q0002255 - LKJIN001 (29-07-21)-pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-08-02 05:29:30 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/9eb75a08-fc2a-4a7b-85d2-455aadb742c3

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/175635/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.DLO.genEldorado.28591.22113.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
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/85c676e1-5bff-4cbb-a1c2-397509a8ba48
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/825351
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 457761 Sample: INVOICE - Q0002255 - LKJIN0... Startdate: 02/08/2021 Architecture: WINDOWS Score: 100 37 www.best123-movies.com 2->37 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 6 other signatures 2->49 11 INVOICE - Q0002255 - LKJIN001 (29-07-21)-pdf.exe 3 2->11         started        signatures3 process4 file5 29 INVOICE - Q0002255...-07-21)-pdf.exe.log, ASCII 11->29 dropped 14 INVOICE - Q0002255 - LKJIN001 (29-07-21)-pdf.exe 11->14         started        process6 signatures7 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 explorer.exe 14->17 injected process8 dnsIp9 31 www.ortodonciaberistain.com 107.163.42.193, 49760, 80 TAKE2US United States 17->31 33 royalposhpups.com 198.71.232.11, 49761, 80 AS-26496-GO-DADDY-COM-LLCUS United States 17->33 35 5 other IPs or domains 17->35 41 System process connects to network (likely due to code injection or exploit) 17->41 21 WWAHost.exe 12 17->21         started        signatures10 process11 dnsIp12 39 www.desarrollosolucionesnavarro.com 21->39 51 Modifies the context of a thread in another process (thread injection) 21->51 53 Maps a DLL or memory area into another process 21->53 55 Tries to detect virtualization through RDTSC time measurements 21->55 25 cmd.exe 1 21->25         started        signatures13 process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/4c1b38391ab198fb0e2c7050a8951e65efbc818991fb710f6deeb2c76a54c734/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2021-08-02 03:37:36 UTC
AV detection:
7 of 46 (15.22%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jqntqoi2wgmpwdrmobikrfi6mxx3zamjsh5xcd3n52zmo2suy42a._file
Verdict:
malicious
Label(s):
formbook
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Similar samples:
03735650255866b1c2592bcb4567cbcb2b9d23eea5430d2e7d7c6315abadb5ad
Formbook
31de85bffebf15b904ab8046680be20058efb7a2a411ec79c694194082a93e3b
Formbook
3c8992a1fa966b9838653d1276934114b1e3536d2d0d47172ef4c67af1ef3b2c
Formbook
9b8e02c9169932cb809300c4dff5afc240aba4d5a87264f0f7123314345c6248
Formbook
cbe7c0318d2f88aff2f18fc19a824bfdebcf2f7137d85adac1a5799afbb6876b
Formbook
ee929bc954e0c858ca17de372ed70ec02343b1c48ab6631c07c60550a8da7b4d
Formbook
eebf2b5d558c3f39f52538f7d3175c732f38351dca734eb37bf975796dcc086a
Formbook
+ 7'303 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/210802-8c3yw5s5xx/
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
Blocklisted process makes network request
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.desarrollosolucionesnavarro.com/ipa8/
Unpacked files
SH256 hash:
f983da48ac2fd562b4a60f65633c6d5783e1779df39ce325b5e1c86e4030cc75
MD5 hash:
1e2eda83043bcf638d404c49e1a88b00
SHA1 hash:
e91f775f6d57d0ccb81e54cdf77a304d3684a153
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/90c7c305-5eb9-4fcc-b118-a0e40bc56215/
Parent samples :
eebf2b5d558c3f39f52538f7d3175c732f38351dca734eb37bf975796dcc086a
d064e13de302104e85c1fbc8b177bc3b17ecf1dc0063ff1865d825b219d9f11d
ee929bc954e0c858ca17de372ed70ec02343b1c48ab6631c07c60550a8da7b4d
4c1b38391ab198fb0e2c7050a8951e65efbc818991fb710f6deeb2c76a54c734
5023ffb96d6d21805c48f275dbb208a1671ab8dd7f3c170ca4dba1ac08c075f9
21819dfbcb4f450bc55706acc971444f6f3452604dc0c19a0b04f2e21732987b
1f842cf49a031ad6112edf767d3022d47391b39fd3bda6e7c456f5815f8bf742
b61e941f98080f431ec35c165703e2d18957fcc2b386286eeaa7a274ded8e0b3
3edf6811850efc722b39737bf3623a42127e728f0c32a0a6ab7c66044838d307
2c365b6985fd96e0f9596e0e17370ef537d786473e490dfb144ade8fedc5f2ce
e6d6ba31c6a493196ef6147ee975e41970f069ce9abd2b114c115891be4d37e0
SH256 hash:
b85a5eed797606990a0180baa7d888ed290b3279416aaec62ca4c54a2c633298
MD5 hash:
2033287492c1597473e8d34a39424584
SHA1 hash:
22f575081387cc280641ae0dc803abd035bba81d
Link:
https://www.unpac.me/results/90c7c305-5eb9-4fcc-b118-a0e40bc56215/
SH256 hash:
cfef97ff706312dff4edd998aeee22f1283221631ebb0cc954bebbb701c1465c
MD5 hash:
a0f625a3d3348903f3c902f588c0e4f5
SHA1 hash:
20d1f0b74abe6f500e8c21119f55281926210ac0
Link:
https://www.unpac.me/results/90c7c305-5eb9-4fcc-b118-a0e40bc56215/
SH256 hash:
4c1b38391ab198fb0e2c7050a8951e65efbc818991fb710f6deeb2c76a54c734
MD5 hash:
92f15ca5167c47451b44f08c4eb0d5a4
SHA1 hash:
aaa650fdf71978a3143a5a8c85a57a5518c6c8e1
Link:
https://www.unpac.me/results/90c7c305-5eb9-4fcc-b118-a0e40bc56215/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.51
Link:
https://yomi.yoroi.company/submissions/4c1b38391ab198fb0e2c7050a8951e65efbc818991fb710f6deeb2c76a54c734

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:pe_imphash
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Rule name:quakbot_halo_generated
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Author:Halogen Generated Rule, Corsin Camichel
Rule name:silentbuilder_halo_generated
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Author:Halogen Generated Rule, Corsin Camichel
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/175635/

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