MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2a1b5e6dcd2c73e73fa3cdd788771c9f25152cb60d8c8ad186983327f541d0fa. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2a1b5e6dcd2c73e73fa3cdd788771c9f25152cb60d8c8ad186983327f541d0fa
SHA3-384 hash: ec8cd7dff3ac53cdd375cae6745c2873da39416dd20d14fedb2ac8e4ffc4216ecb46d09cf44a8e089f3114cac4a8433c
SHA1 hash: 243622e167e25ae6a1be4aa957da81cc6b665e92
MD5 hash: e1a2ba4d338785ded3313b8ffb36125b
humanhash: lemon-wyoming-kentucky-mountain
File name:RFQ_NEXCOMM.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:630'784 bytes
First seen:2024-02-14 13:02:40 UTC
Last seen:2024-02-14 14:30:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:aiD2SXlunZlGY1jpw6wI1UBum9BLQb6X35MNaHZEqXuIGX3a4Bh:fV0lGGpwJI1QusBLQbMHOqXuIGas
Threatray 1'085 similar samples on MalwareBazaar
TLSH T1B5D42354B42CA347E9BD43FFBA70294807B722974851EF09BDC4B1C72DA7F901862A5B
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon 3492d06974b47c0c (7 x Formbook, 4 x AgentTesla, 1 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
296
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/476151/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2680.32168.1384.UNOFFICIAL
Create hunting rule

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/65ccba0fac375bec15e6f997/reports/ebe9cc60-2e15-4035-9172-00f63f631dbd/overview
Verdict:
Malicious
Labled as:
MSIL/Kryptik_AGeneric.BXG trojan
Link:
https://www.hybrid-analysis.com/sample/2a1b5e6dcd2c73e73fa3cdd788771c9f25152cb60d8c8ad186983327f541d0fa
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/4aca9e1e-7957-42d2-b032-ba6c876c2764
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1392140
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found 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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Suspect Svchost Activity
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
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1392140 Sample: RFQ_NEXCOMM.exe Startdate: 14/02/2024 Architecture: WINDOWS Score: 100 34 www.zodiacasignforyou.com 2->34 36 www.ul52.site 2->36 38 9 other IPs or domains 2->38 42 Multi AV Scanner detection for domain / URL 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 14 other signatures 2->48 11 RFQ_NEXCOMM.exe 3 2->11         started        signatures3 process4 signatures5 56 Tries to detect virtualization through RDTSC time measurements 11->56 58 Injects a PE file into a foreign processes 11->58 14 RFQ_NEXCOMM.exe 11->14         started        process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 17 explorer.exe 90 1 14->17 injected process8 dnsIp9 28 www.girl8.site 192.74.233.8, 49722, 80 PEGTECHINCUS United States 17->28 30 www.footballcab.com 85.128.128.104, 49718, 80 NAZWAPL Poland 17->30 32 2 other IPs or domains 17->32 40 System process connects to network (likely due to code injection or exploit) 17->40 21 svchost.exe 17->21         started        signatures10 process11 signatures12 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/2a1b5e6dcd2c73e73fa3cdd788771c9f25152cb60d8c8ad186983327f541d0fa
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2a1b5e6dcd2c73e73fa3cdd788771c9f25152cb60d8c8ad186983327f541d0fa/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2024-02-14 03:34:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=finv43onfrz6op5dzxlyq5y4t4srklfwbwgivumgtazsp5kb2d5a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
21a34d80499260fcf691ed16c83da9f3a9d14a7e2299d73d7976112230a98e5a
Formbook
438b026b52bd8b11d0b752f5734bf8a20275a6746a522c4a8179f2f9030c5fb6
Formbook
a4e15cb73ccfc8ff3119326251deca62b7618cf21c6554eb3edd9aaca2d222f1
Formbook
ac0b1f47f36bdbc8974390d8473d74f6e71d5219a338796ed9d0582f8020f8c7
Formbook
bc68c87b8f872599ae16f2c19ad5371dab04344c9bbdcab5dd2d18eb9558b14f
Formbook
eeb9ebbaf564800d692de3de873fafbfb9ed9f47459e83bc4a2ffdc1503a1799
Formbook
+ 1'075 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ki21 rat spyware stealer trojan
Link:
https://tria.ge/reports/240214-qadkpscd87/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
49e4740bda6c13ab67503ed276497089205a297dc2ca2645116b37e1f3b9d0aa
MD5 hash:
73673e1cff8aa4de7fe976521ed74940
SHA1 hash:
958864dcd2ea903319640681b62a5d630b254374
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/5612126f-4226-41df-90fe-2afe1c0be231/
Parent samples :
ac0b1f47f36bdbc8974390d8473d74f6e71d5219a338796ed9d0582f8020f8c7
21a34d80499260fcf691ed16c83da9f3a9d14a7e2299d73d7976112230a98e5a
2a1b5e6dcd2c73e73fa3cdd788771c9f25152cb60d8c8ad186983327f541d0fa
96deb2b04135c0b3d7f7ad059870a3fb2e8aebcf8c260df81f507d8fbe71fb5c
b98dbe3fbbc3aebd02d205d45b61c61d71b83bc8cec5435bb6e5c9b880872f73
37b8750101990658c22bfd86276c1b8ae86b627a40ac5b8ce20b9b305a3ff465
2a321e21bd01aa4f0ff4793c7ab4b2bcc01ff89f098b39daa0ba1e335f05ca2a
SH256 hash:
d5e54ac29044ea48c678a522e6d642294c7dfb119d9bc256f007348f08ea6eff
MD5 hash:
495e6660bcbbe2d96a0119d02a22b416
SHA1 hash:
7dccb189d7f1533a11b95da8908fb1a45cfc9dab
Link:
https://www.unpac.me/results/5612126f-4226-41df-90fe-2afe1c0be231/
SH256 hash:
15c02053d2fe11d3ac6e99eebcb4e3a87d8d277a998997408c67c7bfa238ffd6
MD5 hash:
1ca99c034e9391376f68d42868ade328
SHA1 hash:
46d626a3ca2b32b85e8aab9caa630ddd24bcb8ba
Link:
https://www.unpac.me/results/5612126f-4226-41df-90fe-2afe1c0be231/
SH256 hash:
fbdb1246e81acfae83e60b33bd21eed7014ef299e6b7486797272fe4cbae991d
MD5 hash:
1c8cf6ff7da7a771afcc2de22ad564f0
SHA1 hash:
2da4276cf1636d4239271de5f47302e7b26d72af
Link:
https://www.unpac.me/results/5612126f-4226-41df-90fe-2afe1c0be231/
SH256 hash:
2a1b5e6dcd2c73e73fa3cdd788771c9f25152cb60d8c8ad186983327f541d0fa
MD5 hash:
e1a2ba4d338785ded3313b8ffb36125b
SHA1 hash:
243622e167e25ae6a1be4aa957da81cc6b665e92
Link:
https://www.unpac.me/results/5612126f-4226-41df-90fe-2afe1c0be231/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/2a1b5e6dcd2c73e73fa3cdd788771c9f25152cb60d8c8ad186983327f541d0fa

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.

Malspam

Formbook

Executable exe 2a1b5e6dcd2c73e73fa3cdd788771c9f25152cb60d8c8ad186983327f541d0fa

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/476151/

Comments