MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f84146281b8ffffdc316796c59ed29892f5f8b0c0d3127d4be22084abb103bee. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments

SHA256 hash: f84146281b8ffffdc316796c59ed29892f5f8b0c0d3127d4be22084abb103bee
SHA3-384 hash: 28b4eb02fb4e786d0647a1c721e4d8efb95a0e75f65b008600606e62534b0fa019298d3781057f3283cf09aaef24b3a0
SHA1 hash: bf0ada4024741f1de5f9780119bdd3536b4a1efc
MD5 hash: 1da139b5621f919bfbe5c64cbbbce516
humanhash: failed-steak-east-nuts
File name:DHL_119040 documentos de recibo,pdf.exe
Download: download sample
Signature Formbook
File size:571'392 bytes
First seen:2021-12-17 15:21:25 UTC
Last seen:2021-12-17 16:38:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:D8PapPapParWZDONRTPdUZFKMYE1LZ6dFdiGbcuSK3gy1:D8P8P8Ps7VMYaLZKFsG7SK3g
Threatray 12'586 similar samples on MalwareBazaar
TLSH T1C3C4D05172A8DB16D8BD67F88C60A0A003B67C6AA675E74F1CC07DEB35B5F9046A0F07
File icon (PE):PE icon
dhash icon 0e0c052525162b2d (22 x Formbook, 22 x RemcosRAT, 17 x AgentTesla)
Reporter abuse_ch
Tags:DHL exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
161
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
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
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 541637 Sample: DHL_119040 documentos de re... Startdate: 17/12/2021 Architecture: WINDOWS Score: 100 31 www.familysystemsllc.com 2->31 35 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 9 other signatures 2->41 11 DHL_119040 documentos de recibo,pdf.exe 3 2->11         started        signatures3 process4 file5 29 DHL_119040 documen... recibo,pdf.exe.log, ASCII 11->29 dropped 53 Injects a PE file into a foreign processes 11->53 15 DHL_119040 documentos de recibo,pdf.exe 11->15         started        signatures6 process7 signatures8 55 Modifies the context of a thread in another process (thread injection) 15->55 57 Maps a DLL or memory area into another process 15->57 59 Sample uses process hollowing technique 15->59 61 Queues an APC in another process (thread injection) 15->61 18 explorer.exe 15->18 injected process9 dnsIp10 33 www.jkhdhg.com 45.140.33.16, 49797, 80 NEROCLOUDGB Moldova Republic of 18->33 43 System process connects to network (likely due to code injection or exploit) 18->43 22 wscript.exe 18->22         started        signatures11 process12 signatures13 45 Self deletion via cmd delete 22->45 47 Modifies the context of a thread in another process (thread injection) 22->47 49 Maps a DLL or memory area into another process 22->49 51 Tries to detect virtualization through RDTSC time measurements 22->51 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-12-17 15:22:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
21
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:ob15 rat spyware stealer trojan
Behaviour
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
Deletes itself
Formbook Payload
Formbook
Unpacked files
SH256 hash:
14be9dc47074a21889fd2be91134d9bf4464f60f6d1d98abcb101e4e79abca71
MD5 hash:
0dcd816fb6e7c19de3474ef456222e03
SHA1 hash:
32ff5e25a600d7f3e26dffc1a5cc67150213e7fa
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
24377932178865b181a59f4fb2099d97c222d43b0d9c4f2a42a759a76a5b5fde
MD5 hash:
3f1812800070bae9c31e80cb473418e3
SHA1 hash:
ddd5f0354dbc5e04218a49dd19caa1fdc3a9766f
SH256 hash:
9f5763966bacdc6de3944a6e06a49b05869c38f2e98b32cb93b483a480a6ffff
MD5 hash:
3418c620c4b9dd4533a88f1ba5ec3ff1
SHA1 hash:
12f6aaf1c90030c4063d42a27b2e7000a08b6e74
SH256 hash:
f84146281b8ffffdc316796c59ed29892f5f8b0c0d3127d4be22084abb103bee
MD5 hash:
1da139b5621f919bfbe5c64cbbbce516
SHA1 hash:
bf0ada4024741f1de5f9780119bdd3536b4a1efc
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Comments