MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1639a76ac7f4c8944bf7f7599c15f68c5211ecab7704e18bfd66400ef7688b9b. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
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SHA256 hash: 1639a76ac7f4c8944bf7f7599c15f68c5211ecab7704e18bfd66400ef7688b9b
SHA3-384 hash: ced4a3436444ec6c919ccc834e3f67285243ac66f5c94badfa8a64d602b53ca8f5dc749fe1fa02a489f42c9d5f32eab6
SHA1 hash: 60fe2c16e84727cff0a3250215102dc97a4bde5b
MD5 hash: 81d542e174ecce4b80ac4c00f7f63512
humanhash: mississippi-triple-butter-harry
File name:AWB_3877.EXE
Download: download sample
Signature Formbook
Create hunting rule
File size:706'048 bytes
First seen:2022-09-15 09:44:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:8zE+Lr2iNEF75euLUB/P0xeNLr3xrobrD3piFrGbNqDoXKCsHFBbPmXsXRFwS:Ar16Z5fI0xGr3x8br66bQDoXjS9POeR
TLSH T133E4F10DE261AFE0F06903BA2170E9266F797F1584BED59C1CE6B2E718B4397400BD97
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter cocaman
Tags:DHL exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
298
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
AWB_3877.EXE
Verdict:
Malicious activity
Analysis date:
2022-09-16 08:30:21 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/04bde78b-1616-41ef-ad0f-3fa3f86795c9

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/310194/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.PackedNET.1427-2.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6322f4291183046074a2d9aa/reports/435019de-7ce0-4512-90cd-5d95ed6bb17e/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7b7a0f44-cddb-4f9f-b383-78b8119f8b02
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1070808
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in 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)
Multi AV Scanner detection for domain / URL
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
Snort IDS alert for network traffic
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 harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 703350 Sample: AWB_3877.EXE.exe Startdate: 15/09/2022 Architecture: WINDOWS Score: 100 28 www.mariekeklaren.com 2->28 30 www.babesinxs.com 2->30 32 Snort IDS alert for network traffic 2->32 34 Multi AV Scanner detection for domain / URL 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 8 other signatures 2->38 8 AWB_3877.EXE.exe 3 2->8         started        signatures3 process4 file5 20 C:\Users\user\...\AWB_3877.EXE.exe.log, ASCII 8->20 dropped 11 AWB_3877.EXE.exe 8->11         started        process6 signatures7 40 Modifies the context of a thread in another process (thread injection) 11->40 42 Maps a DLL or memory area into another process 11->42 44 Sample uses process hollowing technique 11->44 46 Queues an APC in another process (thread injection) 11->46 14 msiexec.exe 13 11->14         started        17 explorer.exe 11->17 injected process8 dnsIp9 48 Tries to steal Mail credentials (via file / registry access) 14->48 50 Tries to harvest and steal browser information (history, passwords, etc) 14->50 52 Modifies the context of a thread in another process (thread injection) 14->52 54 Maps a DLL or memory area into another process 14->54 22 utahboxing.org 162.144.15.236, 49742, 80 UNIFIEDLAYER-AS-1US United States 17->22 24 sunsolarpanelprice.xyz 64.190.62.22, 49741, 80 NBS11696US United States 17->24 26 2 other IPs or domains 17->26 56 System process connects to network (likely due to code injection or exploit) 17->56 58 Performs DNS queries to domains with low reputation 17->58 signatures10
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1639a76ac7f4c8944bf7f7599c15f68c5211ecab7704e18bfd66400ef7688b9b/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-09-05 11:49:40 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
27 of 40 (67.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cy42o2wh6tejis7x65mzyfpwrrjbd3flo4codc75mzaa553ironq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:jem9 rat spyware stealer trojan
Link:
https://tria.ge/reports/220915-lq26sagcfl/
Behaviour
Gathers network information
Modifies Internet Explorer settings
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
Checks computer location settings
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/f26c7922-0ca9-404a-94ab-2e7478850084
Unpacked files
SH256 hash:
bd0570130604ce7984aa17c4539faf7aecc0af38565f79f793b721588e7445bd
MD5 hash:
6f22fc93da1334f3d2850d0d855e5d58
SHA1 hash:
f9e80a384e53088ca01b7e41f7b5dbffc01ca353
Detections:
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/feca9173-697f-4c9b-b43a-a8fcc3e15032/
Parent samples :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 hash:
c45a3dae97e5e635a567df02635fe941af384f35cc993d4e52a57fa4f4026b3e
MD5 hash:
966c65a2893f62df72494272d810448f
SHA1 hash:
de82f765123b6ed954996603b663e9bac36acfb6
Link:
https://www.unpac.me/results/feca9173-697f-4c9b-b43a-a8fcc3e15032/
SH256 hash:
1b1be90525cc4a8281cae8ee81dc1f67ae3a1ae6b4b4d3233be8789197c9ffc0
MD5 hash:
d89ebf43a43f32a6c928b8332e0abad0
SHA1 hash:
a9744d19b00318dae8af880b794f106c9a1dff29
Link:
https://www.unpac.me/results/feca9173-697f-4c9b-b43a-a8fcc3e15032/
SH256 hash:
499af00eef7e31942835482f794287ba1aae486f6247112893696054acb2da06
MD5 hash:
20d25fe5af5472e6296184d21de915b7
SHA1 hash:
2d317e2f2611e11612840405cca73dfaf449a088
Link:
https://www.unpac.me/results/feca9173-697f-4c9b-b43a-a8fcc3e15032/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/feca9173-697f-4c9b-b43a-a8fcc3e15032/
SH256 hash:
1639a76ac7f4c8944bf7f7599c15f68c5211ecab7704e18bfd66400ef7688b9b
MD5 hash:
81d542e174ecce4b80ac4c00f7f63512
SHA1 hash:
60fe2c16e84727cff0a3250215102dc97a4bde5b
Link:
https://www.unpac.me/results/feca9173-697f-4c9b-b43a-a8fcc3e15032/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1639a76ac7f4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/1639a76ac7f4c8944bf7f7599c15f68c5211ecab7704e18bfd66400ef7688b9b

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
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

img e7f416ee61342d5929c689997c727fd0f260df608d7b9d3ca185ef8258887f1c

Formbook

Executable exe 1639a76ac7f4c8944bf7f7599c15f68c5211ecab7704e18bfd66400ef7688b9b

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 e7f416ee61342d5929c689997c727fd0f260df608d7b9d3ca185ef8258887f1c
Cape
Cape
https://www.capesandbox.com/analysis/310194/
  
Dropped by
MD5 4ef63ff3986ac4eedb65174482a3ebe0

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