MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733
SHA3-384 hash: 0ec2ae51ce2f89e30307ea69118a1a41f9c039a236c356f0784e5dfd0bd4b319eb41fd29a38696f047ca1fe0eaeb1f37
SHA1 hash: d6ce47965767a67c43153c3dcf04277a1ba3281e
MD5 hash: f87e03b0e371d4c86d9e20883bc8a970
humanhash: floor-carolina-bacon-two
File name:SKM_PO09102023 PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:683'520 bytes
First seen:2023-12-05 07:17:10 UTC
Last seen:2023-12-05 09:18:57 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 12288:8vNzd7BR6wTvskq1zvrXOC5XxhMd2GEYEcCXZ41ZbEbAMBh56aOB5VHWO23w:8vNzpBzsbdTXOGXHMd2GEYEWSE+Ea65X
Threatray 3'903 similar samples on MalwareBazaar
TLSH T133E423A16278EB77E83E1BF9604B9912B3F1692A7552C78C9EC141D71C89F028710FE3
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)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
309
Origin country :
HU HU
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/462569/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.59820.11542.10444.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
davinci packed remcos
Link:
https://www.filescan.io/uploads/656eceb03636548f373ac7cb/reports/9bc2c1f9-718e-4a19-853d-8799afa850de/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733
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/a4fd50b0-f716-468c-bf91-e720944cf7a6
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1353803
Signature
.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
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sample uses string decryption to hide its real strings
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: 1353803 Sample: SKM_PO09102023_PDF.exe Startdate: 05/12/2023 Architecture: WINDOWS Score: 100 34 www.qieqyt.xyz 2->34 36 www.yeddaben.top 2->36 38 11 other IPs or domains 2->38 42 Snort IDS alert for network traffic 2->42 44 Multi AV Scanner detection for domain / URL 2->44 46 Found malware configuration 2->46 50 12 other signatures 2->50 11 SKM_PO09102023_PDF.exe 3 2->11         started        signatures3 48 Performs DNS queries to domains with low reputation 34->48 process4 signatures5 58 Tries to detect virtualization through RDTSC time measurements 11->58 14 SKM_PO09102023_PDF.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 40 1 14->17 injected process8 dnsIp9 28 www.yeddaben.top 104.21.73.136, 49724, 80 CLOUDFLARENETUS United States 17->28 30 www.meekfish.com 104.21.91.32, 49718, 80 CLOUDFLARENETUS United States 17->30 32 4 other IPs or domains 17->32 40 System process connects to network (likely due to code injection or exploit) 17->40 21 raserver.exe 17->21         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 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/1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-11-27 13:22:35 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 23 (82.61%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=c2e6qzahitm4al5xv6xixhlczsoemtis5yz2p33f64xiqqguo4zq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
08bd19ee270606f776e998984c478e35eb93b7a8eade7c4d945d2869ece51ed9
Formbook
1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733
Formbook
3d84d2e22a18f6199633dced4d56afd020e16463b2e83f0113f1a14f994506e5
Formbook
4498e7614edf09dd436a5d0f9cbd418ce22c081692c19887a7b822c2581aa15f
Formbook
5e172b1497a76076f9ca46f345383aad816d90c2c8799a7ec3520a85f38c2bdd
Formbook
6c8bb939433b05a8b56b08ef68f8c5b5f396bc2b5454ec09d4ee1654951ff463
Formbook
7d7af49eae5e4d1d32af7575a6ecd2a2c9e6b6be95edf5026e3eebde23e44038
Formbook
9206da924147e9cc204405a4fe9494c19fb50365c243188ee80ebeeae7d39351
Formbook
b7b13f7292e1c908ad3d37dcc096ae01582efa6f1d91893a78bd0f84b283b148
Formbook
fa8b2e6ab78a1b6cb804a7125624b693a9271e19a6091737534d1f471c7762c6
Formbook
+ 3'893 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:g11y rat spyware stealer trojan
Link:
https://tria.ge/reports/231205-h4zq2ahg3y/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
6ff7eef9360cc9ee0310f08411dc1de34746b44321b5784671dbf5f3d9bcca30
MD5 hash:
82f3cd4d9304a5e097cf2831a829b30d
SHA1 hash:
a025216f4268e46752872985d03fe0b718b3c4be
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/13bc5bc8-146b-421f-8ddc-cebbb9660c17/
Parent samples :
7d7af49eae5e4d1d32af7575a6ecd2a2c9e6b6be95edf5026e3eebde23e44038
08bd19ee270606f776e998984c478e35eb93b7a8eade7c4d945d2869ece51ed9
1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733
4f8ef9616b1237912967776aff09a8b8fea96837f78787911ce7405ecb4b001d
66f9d333194115f04debc38cc2cb6fa31c443b19889b7ba438223ae1d8009e9e
fd032e026a2d0dc8f80370acf62e120c4a04fb1fd46318839f162f1949ad0edf
SH256 hash:
dc2a31ebcef7e1b02ef0b2237da0e126dfebaa6a6336f829c0194b89793e239b
MD5 hash:
3d9dd0ed4f6deb6ad320d84fa5a40542
SHA1 hash:
f2daf79f4bfd1118856e13e1487c99259415d39e
Link:
https://www.unpac.me/results/13bc5bc8-146b-421f-8ddc-cebbb9660c17/
SH256 hash:
f5a8f5ded618fd3989fa98a3c2d87c4853d6e10ecb1313cd5ddd7df375336b31
MD5 hash:
243f9990bb7d68a3f6e4d3999800da5b
SHA1 hash:
ba555175d12f19f6288a3574738bcd6c8b747e3b
Link:
https://www.unpac.me/results/13bc5bc8-146b-421f-8ddc-cebbb9660c17/
SH256 hash:
05399a4b0af59a4f38ce0a9f98aa1cb18263a566f8511fe1eda014c773215e8c
MD5 hash:
48f86be5c629cad6d8c9cbd7a0b0a772
SHA1 hash:
6be657a31be35e543e4ac6841e591193903e1d3d
Link:
https://www.unpac.me/results/13bc5bc8-146b-421f-8ddc-cebbb9660c17/
SH256 hash:
1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733
MD5 hash:
f87e03b0e371d4c86d9e20883bc8a970
SHA1 hash:
d6ce47965767a67c43153c3dcf04277a1ba3281e
Link:
https://www.unpac.me/results/13bc5bc8-146b-421f-8ddc-cebbb9660c17/
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/1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
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 1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/462569/

Comments