MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c869527d4761ebc3b0820cf7d375533596e399184bed6918bf359e04678cce8b. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c869527d4761ebc3b0820cf7d375533596e399184bed6918bf359e04678cce8b
SHA3-384 hash: 17f825e65e3b793dead68d1d96c2c38b7c5d1fbcb18d743c985540269958ad3e8cff7aa8a9bbfd4ced2f8ab6a95d64e4
SHA1 hash: 4d760346a4f78554a1a41b09a7ac14f3a46748d2
MD5 hash: 8944d71a1ed15d3a0ee606905d957c10
humanhash: magnesium-arkansas-cat-sad
File name:Document_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:796'672 bytes
First seen:2024-08-29 09:39:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:n0EVVeUZsZEYvYMKRmhnclCnWSuAX41t3ClU2IfcLwOM01:feUZIPgr06Cn4AonyC2Iflv01
Threatray 2 similar samples on MalwareBazaar
TLSH T17B05F11137F86F6AD579C3FA4150640917B2B81FA4AED29A4ED771DF2AB2F010B60E43
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
386
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Document_pdf.exe
Verdict:
Malicious activity
Analysis date:
2024-08-29 09:43:01 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/5d273d47-7728-47d0-a47e-49d427b6a982

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.12723.23124.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d041f4fe69a9e56049d532
Tags:
Generic Static Stealth Swotter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/c869527d4761ebc3b0820cf7d375533596e399184bed6918bf359e04678cce8b
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1de4129b-84bf-492d-a039-4ae0fc182403
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1501068
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Found direct / indirect Syscall (likely to bypass EDR)
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1501068 Sample: Document_pdf.exe Startdate: 29/08/2024 Architecture: WINDOWS Score: 100 33 www.x0x9x8x8x7x6.shop 2->33 35 www.sorriragora.online 2->35 37 17 other IPs or domains 2->37 45 Suricata IDS alerts for network traffic 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 5 other signatures 2->51 10 Document_pdf.exe 3 2->10         started        signatures3 process4 file5 31 C:\Users\user\...\Document_pdf.exe.log, ASCII 10->31 dropped 65 Injects a PE file into a foreign processes 10->65 14 Document_pdf.exe 10->14         started        17 Document_pdf.exe 10->17         started        signatures6 process7 signatures8 67 Maps a DLL or memory area into another process 14->67 19 UmTkfCFGiVtNt.exe 14->19 injected process9 signatures10 53 Found direct / indirect Syscall (likely to bypass EDR) 19->53 22 winrs.exe 13 19->22         started        process11 signatures12 55 Tries to steal Mail credentials (via file / registry access) 22->55 57 Tries to harvest and steal browser information (history, passwords, etc) 22->57 59 Modifies the context of a thread in another process (thread injection) 22->59 61 3 other signatures 22->61 25 UmTkfCFGiVtNt.exe 22->25 injected 29 firefox.exe 22->29         started        process13 dnsIp14 39 www.x0x9x8x8x7x6.shop 188.114.97.3, 49742, 49743, 49745 CLOUDFLARENETUS European Union 25->39 41 www.fynix.life 184.94.212.115, 49747, 49748, 49749 VXCHNGE-NC01US United States 25->41 43 9 other IPs or domains 25->43 63 Found direct / indirect Syscall (likely to bypass EDR) 25->63 signatures15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c869527d4761ebc3b0820cf7d375533596e399184bed6918bf359e04678cce8b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c869527d4761ebc3b0820cf7d375533596e399184bed6918bf359e04678cce8b/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeyLogger
Create hunting rule
Status:
Malicious
First seen:
2024-08-29 09:40:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
24
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zbuve7khmhv4hmecbt35g5ktgwlohgiyjpwwsgf7gwpaiz4mz2fq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
046735ced511c1064c2ea51fe6fd55ea1dc5a2d19e608bea4c8df9f8f376a78d
Formbook
3848e4539cfa567955ee4cffd6ad22e250afb44728a86550d264dd197ffac402
Formbook
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/240829-lm7bbsvcjd/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6ae24da9-38e9-4c4e-805d-8db6980efa4a
Unpacked files
SH256 hash:
1f78451393b3ce2553dad543a3081fcc1bde9efab7a37f38b97a2f81baf3bd39
MD5 hash:
e427a00d3c08eff29caf768afdc96f50
SHA1 hash:
de699ca6236b4237cac94863e47ab9826eccdb63
Detections:
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Link:
https://www.unpac.me/results/0f79662c-82ff-4abb-84d3-a3258585e857/
SH256 hash:
6f5047d8a5075f6a07d4bd4140c8bfb68578dcda509e12f83587d656556bdb99
MD5 hash:
165279448a8484c4eaa2a7672cbfcaac
SHA1 hash:
2b832d557b7e69d6bccbb0eba101ab0ba021aaf2
Link:
https://www.unpac.me/results/0f79662c-82ff-4abb-84d3-a3258585e857/
SH256 hash:
c22b6e2cfed3d7e9e0bc312aedb34dd32d9b8049319032ddc7557c9756cf07f7
MD5 hash:
afafe33158d5f82d678539141bbd0455
SHA1 hash:
5746d7bc26825f9bbf73487ee0dd5324d9a19288
Link:
https://www.unpac.me/results/0f79662c-82ff-4abb-84d3-a3258585e857/
SH256 hash:
1aa629a75e963e148d635e2cea9f3b7c95a2d537dd30054a9a6073ec0dbd9c2b
MD5 hash:
01ca16a03e702a8ba3b29930646aa378
SHA1 hash:
51d83ceca155941a26ae8858d3e022a04872232c
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/0f79662c-82ff-4abb-84d3-a3258585e857/
SH256 hash:
c869527d4761ebc3b0820cf7d375533596e399184bed6918bf359e04678cce8b
MD5 hash:
8944d71a1ed15d3a0ee606905d957c10
SHA1 hash:
4d760346a4f78554a1a41b09a7ac14f3a46748d2
Link:
https://www.unpac.me/results/0f79662c-82ff-4abb-84d3-a3258585e857/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c869527d4761/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c869527d4761ebc3b0820cf7d375533596e399184bed6918bf359e04678cce8b

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 c869527d4761ebc3b0820cf7d375533596e399184bed6918bf359e04678cce8b

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments