MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7c3d5ebd2c417a52b2a0b98dee95b5a7f283816f6a2453ceeffd31becc140882. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
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SHA256 hash: 7c3d5ebd2c417a52b2a0b98dee95b5a7f283816f6a2453ceeffd31becc140882
SHA3-384 hash: dda29acf41ee4edd5c91e938b5443290dc0fdab8d29fefb299c88ce1be7bc9a55b7295525980a74cb393fb3700d101a5
SHA1 hash: cc2bdaefa2f0ac108e2f456e42a42e8258580cf4
MD5 hash: ce556ce97ea23cbc2940f2aad45d468f
humanhash: uniform-freddie-four-south
File name:TPJX2QwEdXs5sTV.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:671'232 bytes
First seen:2021-09-15 08:28:47 UTC
Last seen:2021-09-15 14:04:22 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 12288:cC2I/yzQs2TaIpIByklwoL18/kdfskxRXP6erdH2fQiZ8uXpIe:cOMIpIBG/CUqRXP64gf5Ie
Threatray 8'431 similar samples on MalwareBazaar
TLSH T17EE4024937F928B3C6AA0674B422D15043F1EC22BE87D78E6E5539BB65F3315B103A87
dhash icon 71f0f0f0eccccc71 (10 x AgentTesla, 6 x Formbook, 6 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
296
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
TPJX2QwEdXs5sTV.exe
Verdict:
Malicious activity
Analysis date:
2021-09-15 08:43:59 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/f3448bf0-1bdb-4c37-880e-609dfec9da20

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/188090/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/617518b1a9d585e6d5370f96/reports/3732d28e-f1b4-4dc7-be64-3075f9ed22fd/overview
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/aaa95a6e-e995-49f9-8897-a7577af8d27d
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/851209
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 483640 Sample: TPJX2QwEdXs5sTV.exe Startdate: 15/09/2021 Architecture: WINDOWS Score: 100 31 www.fanpaixiu.xyz 2->31 33 www.438451.com 2->33 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 7 other signatures 2->47 10 TPJX2QwEdXs5sTV.exe 3 2->10         started        signatures3 process4 file5 29 C:\Users\user\...\TPJX2QwEdXs5sTV.exe.log, ASCII 10->29 dropped 57 Writes to foreign memory regions 10->57 59 Injects a PE file into a foreign processes 10->59 14 RegSvcs.exe 10->14         started        17 RegSvcs.exe 10->17         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 14->61 63 Maps a DLL or memory area into another process 14->63 65 Sample uses process hollowing technique 14->65 67 Queues an APC in another process (thread injection) 14->67 19 cmd.exe 14->19         started        22 explorer.exe 14->22 injected 69 Tries to detect virtualization through RDTSC time measurements 17->69 process9 dnsIp10 49 Modifies the context of a thread in another process (thread injection) 19->49 51 Maps a DLL or memory area into another process 19->51 53 Tries to detect virtualization through RDTSC time measurements 19->53 25 cmd.exe 1 19->25         started        35 www.munortiete.com 172.67.147.111, 49810, 80 CLOUDFLARENETUS United States 22->35 37 www.pierrot-bros.com 22->37 39 4 other IPs or domains 22->39 55 System process connects to network (likely due to code injection or exploit) 22->55 signatures11 process12 process13 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7c3d5ebd2c417a52b2a0b98dee95b5a7f283816f6a2453ceeffd31becc140882/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-09-15 07:44:52 UTC
AV detection:
10 of 45 (22.22%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=pq6v5pjmif5ffmvaxgg65fnvu7zihalpnisfhtxp7uy35taubcba._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
16f669b8657b76f78a71e28f4b475856eddccfd143f2128275212b338aca8620
Formbook
1ba55b6d19b202f0a3fa11a7122a210ed0041074bf30fc754bbc87c1a793304b
Formbook
3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818
Formbook
4b9ec9143ae2471c8cf540f5e3815c4ca4bb5e073d5c45e6bd934cc0350e8546
Formbook
72ea41f7ce02b41072d1dce424f9e4a2a7c9e414c1038d26a11f685a3371473e
Formbook
7deecd8502e99ced6aec8588840f7e972a3b030c19e0e88ef94ec3a9d2ababc9
Formbook
8ea636d851faf7ce0769fbbe7856659d0eb6638353df90e0c93f461ac3a932be
Formbook
cfdb27a9ff39bd1aa5a0a43fe6e272c269a311f5748d8a13b2e705f7d66f16bd
Formbook
f3d5563cbcc2253ffa039657b7db3d50c9db4e0e686d83ab9d022e489fea3bb7
Formbook
+ 8'421 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:t75f loader rat suricata
Link:
https://tria.ge/reports/210915-kdlsladchn/
Behaviour
Gathers network information
Modifies registry class
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
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.438451.com/t75f/
Unpacked files
SH256 hash:
137e7f2e6a7c09a78e52e3f6d1c5a7edc98b7da2cf696a76b3ae4229c2caa3d1
MD5 hash:
30dbc8cb36f5984331c8dfacab154e15
SHA1 hash:
6fd356a90ac8d7862738cede781486f9ce0ef26e
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/cdf293c9-ee18-42a8-896c-cad3f5802d99/
Parent samples :
7deecd8502e99ced6aec8588840f7e972a3b030c19e0e88ef94ec3a9d2ababc9
7c3d5ebd2c417a52b2a0b98dee95b5a7f283816f6a2453ceeffd31becc140882
39c5b29df15e13a18cbc4b77a44208aa927af8851555a4d220d8af0be7aeb235
SH256 hash:
786a31232a66b087fbe3c505573f10a3bdc7080682505b6365b2ff340805837b
MD5 hash:
56daf4fab3d97628553cdb5e932b1654
SHA1 hash:
fe8ebf07fbb18c1a52ebbac7b9b2e28251e96521
Link:
https://www.unpac.me/results/cdf293c9-ee18-42a8-896c-cad3f5802d99/
SH256 hash:
ad4a7895d529d5164302bb88596964ab42ff125bf0f5544418c80b6d438cb587
MD5 hash:
43ababb6b0a02907aad43084f12b10d9
SHA1 hash:
b60ba705891d5a666d64300181b475a46714ffa8
Link:
https://www.unpac.me/results/cdf293c9-ee18-42a8-896c-cad3f5802d99/
SH256 hash:
7c3d5ebd2c417a52b2a0b98dee95b5a7f283816f6a2453ceeffd31becc140882
MD5 hash:
ce556ce97ea23cbc2940f2aad45d468f
SHA1 hash:
cc2bdaefa2f0ac108e2f456e42a42e8258580cf4
Link:
https://www.unpac.me/results/cdf293c9-ee18-42a8-896c-cad3f5802d99/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/7c3d5ebd2c41/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/7c3d5ebd2c417a52b2a0b98dee95b5a7f283816f6a2453ceeffd31becc140882

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
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 7c3d5ebd2c417a52b2a0b98dee95b5a7f283816f6a2453ceeffd31becc140882

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/188090/

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