MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fa8634a43c5dfb22286abeaa9f3c1a62af85ebb4052be0257cdfa50895148876. 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: fa8634a43c5dfb22286abeaa9f3c1a62af85ebb4052be0257cdfa50895148876
SHA3-384 hash: e8b491c04aed6d131089e4562caeff57619da149a635d64cc67c472f36100d415e5ed582e3a1f50b5b99dc5cbdb20022
SHA1 hash: ec5ae05ad09514fa289429d8b213102a2c912f73
MD5 hash: e295996f65a26a11faafb50d0c72603d
humanhash: glucose-mississippi-north-kilo
File name:1003958599_pdf.exe
Download: download sample
Signature Formbook
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File size:248'240 bytes
First seen:2022-09-15 18:53:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:H1+pI/4gmHzGwobvuSjlqNbfazTnQJ8ZMc:HQpIggszKTq18zoiMc
TLSH T1EE34BE88B550B48FC827D933CEDA0C209BA57C6B5717D317A09B32AC9A0D7DB8F151E6
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon d2e8ecb2b2a2b282 (106 x AgentTesla, 106 x Formbook, 24 x RedLineStealer)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
319
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1003958599_pdf.gz
Verdict:
Suspicious activity
Analysis date:
2022-09-06 06:37:50 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1ff13692-137a-414b-9ed8-cfa891d382a4

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/310339/
Detection(s):
SecuriteInfo.com.Trojan.Siggen18.43529.12786.24687.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook overlay packed
Link:
https://www.filescan.io/uploads/632374daba7b8113dd6618c9/reports/1e6cf31d-c2bb-4605-ab5c-99e2fd9dc028/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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/032ad4a8-ad19-4625-8213-6157f40185e6
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1071192
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 703734 Sample: 1003958599_pdf.exe Startdate: 15/09/2022 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus detection for URL or domain 2->36 38 Multi AV Scanner detection for submitted file 2->38 40 5 other signatures 2->40 10 1003958599_pdf.exe 1 2->10         started        process3 file4 28 C:\Users\user\...\1003958599_pdf.exe.log, ASCII 10->28 dropped 50 Writes to foreign memory regions 10->50 52 Allocates memory in foreign processes 10->52 54 Injects a PE file into a foreign processes 10->54 14 cvtres.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 2 other signatures 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.solaranlagen-forum.com 85.13.147.170, 49753, 80 NMM-ASD-02742FriedersdorfHauptstrasse68DE Germany 17->30 32 www.gshund.com 85.13.154.77, 49768, 80 NMM-ASD-02742FriedersdorfHauptstrasse68DE Germany 17->32 42 System process connects to network (likely due to code injection or exploit) 17->42 21 cscript.exe 17->21         started        signatures10 process11 signatures12 44 Modifies the context of a thread in another process (thread injection) 21->44 46 Maps a DLL or memory area into another process 21->46 48 Tries to detect virtualization through RDTSC time measurements 21->48 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/fa8634a43c5dfb22286abeaa9f3c1a62af85ebb4052be0257cdfa50895148876/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-09-06 05:33:43 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7kddjjb4lx5sekdkx2vj6pa2mkxyl25uauv6ajl436sqrfiurb3a._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:s3s3 rat spyware stealer trojan
Link:
https://tria.ge/reports/220915-xjnkladha6/
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 WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/a92bebbd-e915-44b2-a717-039b0f2467b6
Unpacked files
SH256 hash:
072f4f8ae3bf501da1075c9689b1e76d2f3def6d05686be3af0f8a90f965d784
MD5 hash:
9d3c6d818a558a5718f0bc65bb953efb
SHA1 hash:
0631e3047afd1443452de5d323f2910eb371b75f
Detections:
FormBook
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win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/30aa91e6-747e-419a-9980-6bd6d40c3b37/
Parent samples :
d5d15ff5604856647866fcb66e6353cf860114ffe01af6662f53c2a39a7676d9
1a2b06d9313d1317f16483b27f97bb569dffa8e22c1eddd25fe753a92146543b
c69a8cae5c55eb104275465b7e243114b151f49a54997cb496aebb747b4bfc50
6fc02ab37d33d1c6b53b81a7df2bc2abf5bec4651c4a8f93280ed6f46dd38f17
81398fcf0e9612b507cbdf18df673c828d8e08bd8a6abbfcf00261fe84e0bb8d
8f0fba4653d18b7a2b79042ad9f43404cf9adfb4c36cdb6e549647de16c8139e
45b1927934099ea95d315972f7f128ba3af4a64aa483d964f94c599e8e16f094
acb0ec13d308fba63fbc5fd12a66d4f72e61692bcb04bd051ec7844aed438e3e
c2e38b05804fa43eb0cd54de0187ef7d90aa79191877124a504690172ca33b78
1dc7309f7dd394071a6b83e32be1cd98484f813b22790b0a7ec426488cfd82cb
0c40251e1bc8bdd47fbd6b3d235ca27d95801b716734633f7e637ae113149b26
b5fcf18c0ac1815c33ea1a6691bd69f1897b772184231beaf1e4f3f92882ae3e
b8f378b349e37f3590cb8cb4c80a4c9928e79eee8e02c7a28936955989326af6
844c895254d53e80e0e0f00a2c8e1e212db8ac218ca8f5b8a9b6c20e346e280a
fa8634a43c5dfb22286abeaa9f3c1a62af85ebb4052be0257cdfa50895148876
SH256 hash:
fe8afc532d8ce8c0527fb680055762913289c08c0494f4a20fa437d860f1c0a3
MD5 hash:
5fd900a7e44d239739003fefcc0cae4d
SHA1 hash:
ce1b9ff1f48b20c8b045c6d76d48eeb555e50a17
Link:
https://www.unpac.me/results/30aa91e6-747e-419a-9980-6bd6d40c3b37/
SH256 hash:
fa8634a43c5dfb22286abeaa9f3c1a62af85ebb4052be0257cdfa50895148876
MD5 hash:
e295996f65a26a11faafb50d0c72603d
SHA1 hash:
ec5ae05ad09514fa289429d8b213102a2c912f73
Link:
https://www.unpac.me/results/30aa91e6-747e-419a-9980-6bd6d40c3b37/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/fa8634a43c5dfb22286abeaa9f3c1a62af85ebb4052be0257cdfa50895148876

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:INDICATOR_EXE_Packed_ConfuserEx
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Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
Rule name:pe_imphash
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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 fa8634a43c5dfb22286abeaa9f3c1a62af85ebb4052be0257cdfa50895148876

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/310339/

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