MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 39673d6fd51aeaedf60429480dc615144baf0dbd65704dc40825942e60e82be0. 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: 11


Intelligence 11 IOCs YARA 1 File information Comments
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SHA256 hash: 39673d6fd51aeaedf60429480dc615144baf0dbd65704dc40825942e60e82be0
SHA3-384 hash: 2f6fdc35c679d02f757468ae441500c9d38b557abc190465630257f296b129b534d48e67856bc7e2b37d557ded7535c3
SHA1 hash: 1e38bc91626d06aa6f0951bded6e2f2c3ad6db29
MD5 hash: 4433891ceb43012d0f10b3a9c672aed4
humanhash: shade-happy-six-steak
File name:YMvYmQQyCz4gkqA.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:669'184 bytes
First seen:2021-04-01 07:28:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'659 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:0sz8DZkjkFBfu8EHpJfIBMmiG2Hr/Nm95t8pLskvNfWcvF:0ekDYJwMrHDYLULsKHv
Threatray 4'493 similar samples on MalwareBazaar
TLSH A7E4692337477BAEDE7847B62452450033F06E36E6AAD50CAC54324D5F7B6C08BEE662
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: vps.almalare.com
Sending IP: 185.121.120.172
From: postmaster@almalare.com
Subject: REQUEST FOR QUOTATION
Attachment: QUOTATION.rar (contains "YMvYmQQyCz4gkqA.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
118
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
YMvYmQQyCz4gkqA.exe
Verdict:
Malicious activity
Analysis date:
2021-04-01 07:40:44 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/3755bb56-17de-4b6d-9f2a-dc930154d9c0

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/130527/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.576-3.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/661808
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 379839 Sample: YMvYmQQyCz4gkqA.exe Startdate: 01/04/2021 Architecture: WINDOWS Score: 100 31 www.teabreakbrasil.com 2->31 33 shops.myshopify.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 8 other signatures 2->47 11 YMvYmQQyCz4gkqA.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\YMvYmQQyCz4gkqA.exe.log, ASCII 11->29 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 15 YMvYmQQyCz4gkqA.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 15->18 injected process9 dnsIp10 35 www.thewholelifehome.com 18->35 37 www.freeinstruction.com 18->37 39 3 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 control.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/39673d6fd51aeaedf60429480dc615144baf0dbd65704dc40825942e60e82be0/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-04-01 07:29:10 UTC
AV detection:
15 of 43 (34.88%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hftt236vdlvo35qeffea3rqvcrf26dn5mvye3raiewkc4yhifpqa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
024c67bdc81850f0d4acf648be1016358c78e21a74dbde96b0d753cffd76ffa7
Formbook
09f19a43e9a0b736e9fcd33359267340b91a2ccc376c8cda72fac9754c1493c0
Formbook
1e107f01485dd3c413656b5e2d2fdb79166847cd8b3e5f6dc0bcf4895d530c39
Formbook
220f3d2b4e15b67592dc527153c3b7107d1465ef90339b8c00c0db2f9cc245fc
Formbook
38acc90cd6d33b61b99cca8cf06781e1bd2ab8ffebc3a33e036eca36037d413b
Formbook
3b6134b61b84f0653135f7372c8fafe9dd0a35cd658a510de22b9dd9f8bf6257
Formbook
5755f598a66b494a7692bfefd7ff348d7d1d8ae6fdd7e799bdfe7f6cbf642c33
Formbook
7f6694752a3e50d4f811fb5c807f305ba5c4b422c3fa10468132575c6c2505b6
Formbook
8ac1fc19367861f3a749d801300f554148e36a0e8a4f4cce3c5d3e4de43e4279
Formbook
91e13d173fb96f025e17161b61686fa06272a048eececeb7d4e95ecdcb3de4b8
Formbook
+ 4'483 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210401-pwpnpz1tsn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.probysweden.com/cpo/
Unpacked files
SH256 hash:
d436034270fb2d5380e4fcecc1ee6c821a1701aed96045fa13f597da16be08fb
MD5 hash:
00cbf73d8b9f03417a3a32957ec64ed4
SHA1 hash:
b862eff1cf240a5ad5325fd258892e534484a6e8
Link:
https://www.unpac.me/results/b633bb89-0efe-4fcc-ad2d-ca91dd2d95a9/
SH256 hash:
39673d6fd51aeaedf60429480dc615144baf0dbd65704dc40825942e60e82be0
MD5 hash:
4433891ceb43012d0f10b3a9c672aed4
SHA1 hash:
1e38bc91626d06aa6f0951bded6e2f2c3ad6db29
Link:
https://www.unpac.me/results/b633bb89-0efe-4fcc-ad2d-ca91dd2d95a9/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.40
Link:
https://yomi.yoroi.company/submissions/39673d6fd51aeaedf60429480dc615144baf0dbd65704dc40825942e60e82be0

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_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

rar 1e611229c8134da9ad73355d1fd35e32274764adabd0abeef797c70127831164

Formbook

Executable exe 39673d6fd51aeaedf60429480dc615144baf0dbd65704dc40825942e60e82be0

(this sample)

  
Dropped by
MD5 345180ef81f710d13f3d7b716e122af0
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/130527/
  
Dropped by
SHA256 1e611229c8134da9ad73355d1fd35e32274764adabd0abeef797c70127831164

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