MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa478f6a9990a1e1a1921cd5a609e66a7474cf945607a6840cecaa74d93ce820. 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 4 File information Comments
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SHA256 hash: aa478f6a9990a1e1a1921cd5a609e66a7474cf945607a6840cecaa74d93ce820
SHA3-384 hash: 26e3fc85856f3a8c9cad0d001b0b6e994a26fd30a8ad5ae53b54cc66452f73ae999038cb9eecbaf4e67074033c9b3f32
SHA1 hash: 6841d771457b4f02ffd9adabd2d26538c636dc6d
MD5 hash: 467023cd4485d0b15cb66bd5831b1605
humanhash: failed-tango-cola-beer
File name:file.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:655'872 bytes
First seen:2023-11-06 08:50:05 UTC
Last seen:2023-11-06 10:20:27 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:oT31oW+brSHL1TRWxKmByAsETVAfZc8HfU1kceFc8TbmdsLOyzTb:OB+rShVuKmIoufZ9HfUccsbo
TLSH T149D4C05A3750B68FC517C432C5945CA4E7607CAB8317C223A46339D9A97DABBCF122F2
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 e0e69a82a29a82a0 (21 x AgentTesla, 6 x Formbook, 1 x Loki)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
314
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/458182/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
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:
packed
Link:
https://www.filescan.io/uploads/6548a8f7b50c9557591e97f6/reports/cf47b528-d72c-423c-b939-02fbf428447d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/aa478f6a9990a1e1a1921cd5a609e66a7474cf945607a6840cecaa74d93ce820
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/acb427f7-3871-4207-8d20-02032677aa3d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1337485
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
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 domain / URL
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 AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1337485 Sample: file.exe Startdate: 06/11/2023 Architecture: WINDOWS Score: 100 36 www.raycore-sips.com 2->36 38 www.northwesternmedicines.com 2->38 40 10 other IPs or domains 2->40 44 Snort IDS alert for network traffic 2->44 46 Multi AV Scanner detection for domain / URL 2->46 48 Found malware configuration 2->48 50 10 other signatures 2->50 11 file.exe 3 2->11         started        signatures3 process4 signatures5 58 Detected unpacking (changes PE section rights) 11->58 60 Detected unpacking (overwrites its own PE header) 11->60 62 Tries to detect virtualization through RDTSC time measurements 11->62 14 file.exe 11->14         started        process6 signatures7 64 Modifies the context of a thread in another process (thread injection) 14->64 66 Maps a DLL or memory area into another process 14->66 68 Sample uses process hollowing technique 14->68 70 Queues an APC in another process (thread injection) 14->70 17 explorer.exe 8 1 14->17 injected process8 dnsIp9 30 www.aebcn.fun 101.36.109.6, 49721, 80 UHGL-AS-APUCloudHKHoldingsGroupLimitedHK China 17->30 32 www.k7w3a.top 103.127.124.208, 80 MOACKCOLTD-AS-APMOACKCoLTDKR Korea Republic of 17->32 34 5 other IPs or domains 17->34 42 System process connects to network (likely due to code injection or exploit) 17->42 21 control.exe 12 17->21         started        24 autofmt.exe 17->24         started        signatures10 process11 signatures12 52 Modifies the context of a thread in another process (thread injection) 21->52 54 Maps a DLL or memory area into another process 21->54 56 Tries to detect virtualization through RDTSC time measurements 21->56 26 cmd.exe 1 21->26         started        process13 process14 28 conhost.exe 26->28         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/aa478f6a9990a1e1a1921cd5a609e66a7474cf945607a6840cecaa74d93ce820
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/aa478f6a9990a1e1a1921cd5a609e66a7474cf945607a6840cecaa74d93ce820/
Threat name:
Win32.Trojan.Generic
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Status:
Malicious
First seen:
2023-11-06 03:11:37 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
17 of 38 (44.74%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vjdy62uzscq6dimsdtk2mcpgnj2hjt4ukyd2nbam5svhjwj45aqa._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:u29r rat spyware stealer trojan
Link:
https://tria.ge/reports/231106-kr6d6aab5w/
Behaviour
Enumerates system info in registry
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
Formbook payload
Formbook
Unpacked files
SH256 hash:
34654347d18a7a430e82992c29ea5c3fdc6dc5833f64ca5107ff69098a22e6d5
MD5 hash:
d1979ca5989a361d628f499729fcb662
SHA1 hash:
775aedea34148b5cfe6234e088130d60092ece18
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/afe8083c-f2ad-4e4c-bdc1-25958145a1bb/
Parent samples :
cb67fbdadd5b53174e117c296acf0c1b1764a5c3f548b03d2ed9d4ab75aa7c4e
aa478f6a9990a1e1a1921cd5a609e66a7474cf945607a6840cecaa74d93ce820
54f104ddeef486eb81affdbdc74648b1e10605fdcb415fb3749970f55a09c10d
SH256 hash:
55d2e12a65fb2cd16c2c9e4a2baf4725602bcf1e97bed94b905be32d5f13ad5a
MD5 hash:
2f1f8b6ebf3b372c321eab57df41da22
SHA1 hash:
c4f0aafd3f4fffdf4bf6b68e1d4a70e51216d2b8
Link:
https://www.unpac.me/results/afe8083c-f2ad-4e4c-bdc1-25958145a1bb/
SH256 hash:
bfef9eac82e53e8d63bcb3b3022880eaf8f22cbbc6c69f3782b59c438f649f12
MD5 hash:
ddf81912128dd196140e9be656c3a212
SHA1 hash:
51221baf7115f7f2de03cd00b8b25cfde9241a35
Link:
https://www.unpac.me/results/afe8083c-f2ad-4e4c-bdc1-25958145a1bb/
SH256 hash:
c34dfbc328de247d25d670c3b7853f1dddd2ec2607d5dbb0480743b45a15ea64
MD5 hash:
85b87384830444e6ab86a4a692ce96cc
SHA1 hash:
0d7d4614cf31d27e68ebf48e76fb1d308cc08152
Link:
https://www.unpac.me/results/afe8083c-f2ad-4e4c-bdc1-25958145a1bb/
SH256 hash:
aa478f6a9990a1e1a1921cd5a609e66a7474cf945607a6840cecaa74d93ce820
MD5 hash:
467023cd4485d0b15cb66bd5831b1605
SHA1 hash:
6841d771457b4f02ffd9adabd2d26538c636dc6d
Link:
https://www.unpac.me/results/afe8083c-f2ad-4e4c-bdc1-25958145a1bb/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/aa478f6a9990/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.61
Link:
https://yomi.yoroi.company/submissions/aa478f6a9990a1e1a1921cd5a609e66a7474cf945607a6840cecaa74d93ce820

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:NETexecutableMicrosoft
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.

Malspam

Formbook

Executable exe aa478f6a9990a1e1a1921cd5a609e66a7474cf945607a6840cecaa74d93ce820

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/458182/

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