MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e4b8b19c8c8fd39ae06ba2ec632970e7fe16f78ca1f91582461de5da1403a4ed. 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: 17


Intelligence 17 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e4b8b19c8c8fd39ae06ba2ec632970e7fe16f78ca1f91582461de5da1403a4ed
SHA3-384 hash: 6b81548dc15fc1e55d0418829bd81b4ffff7e17c76654d9c54157998344ecda4a940498af067c05617b392e78f09a00f
SHA1 hash: b355cce034c4c385e7ee27c979a7e10877e3543b
MD5 hash: b5027bab17fb5aa21f00bf3ba4528661
humanhash: eight-blue-helium-edward
File name:b5027bab17fb5aa21f00bf3ba4528661.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:766'464 bytes
First seen:2023-08-08 07:43:02 UTC
Last seen:2023-08-08 10:17:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:LsokiF9BChPxxI4VTzCHp8z2ko1bnSSGM8WMupmLwiAdT6/F:QokiZChP8Uzwp8z2BF/AWAwdT6/
Threatray 3'506 similar samples on MalwareBazaar
TLSH T1F5F40201736D6F33E5F5A3F9213614500BB2399E399AEA591CD170CF2A62F108E61F6B
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 10f0c4c8c8c4f010 (26 x AgentTesla, 18 x Smoke Loader, 10 x Formbook)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
262
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
RevisedXPO.docx
Verdict:
Malicious activity
Analysis date:
2023-08-08 06:20:02 UTC
Tags:
exploit cve-2017-11882 loader formbook xloader
Link:
https://app.any.run/tasks/a93b0bce-50e9-4bc4-b975-5f34dc17be0c

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/441264/
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.13243.12827.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/e4b8b19c8c8fd39ae06ba2ec632970e7fe16f78ca1f91582461de5da1403a4ed
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c8443dd1-19d6-44a8-9a1e-427b446add75
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1287566
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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
Snort IDS alert for network traffic
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: 1287566 Sample: CgcGNN2qUz.exe Startdate: 08/08/2023 Architecture: WINDOWS Score: 100 34 www.nodesofty.com 2->34 38 Snort IDS alert for network traffic 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 8 other signatures 2->44 11 CgcGNN2qUz.exe 3 2->11         started        signatures3 process4 signatures5 52 Tries to detect virtualization through RDTSC time measurements 11->52 14 CgcGNN2qUz.exe 11->14         started        process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 Queues an APC in another process (thread injection) 14->60 17 explorer.exe 2 1 14->17 injected process8 dnsIp9 28 www.web-tech-spb.store 87.236.16.226, 49701, 80 BEGET-ASRU Russian Federation 17->28 30 www.realmpabq.com 17->30 32 2 other IPs or domains 17->32 36 System process connects to network (likely due to code injection or exploit) 17->36 21 cmd.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e4b8b19c8c8fd39ae06ba2ec632970e7fe16f78ca1f91582461de5da1403a4ed/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-08-08 06:49:59 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4s4ldhemr7jzvydlulwggklq477bn54muh4rlasgdxs5ufadutwq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
03e156f16efbda2a891a6519a282ad085325d498695287ee92ad056f7d1c2422
Formbook
2c20e13c644886b403df4ba49657c0d032eb34655b7f7d46aeffcf9fdfc9c1e0
Formbook
2e2f7d2ee122957844312161a09f0506d601b0ca7ebb31be40d7057d03627595
Formbook
4e57a7ae42e9005020df2671b6aa6cf19d044be264da5f8e1a4836d5a47b2f14
Formbook
556c89d97bff251e5a6e5db0b9e7dc69f11752758538ecbba759c9347ae4b2a9
Formbook
59162d6533d5d56ceedd3f8a24e85e75cd198c72db5719188a4a582752d7fbe4
Formbook
fbfd173952479920e0f3a8aa41bdd2faea86d2de9a7080a023831e4769c94468
Formbook
fd1e8b3716764f552b7350c4612cfc64b152ded240b6f2a38426d43efeabc7b2
Formbook
+ 3'496 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:oy30 rat spyware stealer trojan
Link:
https://tria.ge/reports/230808-jj9aeabc67/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Unpacked files
SH256 hash:
ac8768f08b9495e7023b01546679be265510f5c2512d8bc2174d846eaeb379ab
MD5 hash:
4fafab18430d6a314b9e90797d939a72
SHA1 hash:
d3a649f6f6d72cf7416b325b6ff2f0f6aa1fd312
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/09b50d71-35b9-4ff0-92fe-76503f8ad42c/
Parent samples :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 hash:
d4606ee4a7140c8846133220c3addf34916aa8eb6a7cbf769a4889ea0f7773a0
MD5 hash:
2c223ad327d1332e96a9c9436415e259
SHA1 hash:
d225098e894b39c683430a39252c44169dc8b7b0
Link:
https://www.unpac.me/results/09b50d71-35b9-4ff0-92fe-76503f8ad42c/
SH256 hash:
1d4ef92940095ce5abd862ddf54fc5b5223e08dd96c0387c2bd2210f25e92963
MD5 hash:
f9337ea20e5973c9376b8ff35804e35e
SHA1 hash:
b6713a3f755af6fc8342cd11c08e67dc48af5751
Link:
https://www.unpac.me/results/09b50d71-35b9-4ff0-92fe-76503f8ad42c/
SH256 hash:
0a6bd230f852b0ea44610bf025b8a6388b50281a53c605782f02db246ab8423b
MD5 hash:
9f1bce530f26ae3644830b6ee8a58c07
SHA1 hash:
acafe183f3b5af3e5eba3c1160fae890e2b2a979
Link:
https://www.unpac.me/results/09b50d71-35b9-4ff0-92fe-76503f8ad42c/
SH256 hash:
e4b8b19c8c8fd39ae06ba2ec632970e7fe16f78ca1f91582461de5da1403a4ed
MD5 hash:
b5027bab17fb5aa21f00bf3ba4528661
SHA1 hash:
b355cce034c4c385e7ee27c979a7e10877e3543b
Link:
https://www.unpac.me/results/09b50d71-35b9-4ff0-92fe-76503f8ad42c/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e4b8b19c8c8f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/e4b8b19c8c8fd39ae06ba2ec632970e7fe16f78ca1f91582461de5da1403a4ed

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:NET
Create hunting rule
Author:malware-lu
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.

Web download

Formbook

Executable exe e4b8b19c8c8fd39ae06ba2ec632970e7fe16f78ca1f91582461de5da1403a4ed

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2695772/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/441264/

Comments