MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5857293816febc37b61e19218f1bb8e52bc6adbcf4e9e13f6fe849ee0370118. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments

SHA256 hash: b5857293816febc37b61e19218f1bb8e52bc6adbcf4e9e13f6fe849ee0370118
SHA3-384 hash: 3743b67bda8022b5fbac4643aef696bd4b26fc5947ac10a2f92a34bffd19a116b3afd09e702462b1ea912dc3c69352f9
SHA1 hash: 3b019d864ba6fec84224b122ddd8db5de57675b4
MD5 hash: 56f284b7bc749e5f97c1d1c6617afdbf
humanhash: blossom-quebec-georgia-tennis
File name:DHL Shipping Documents.exe
Download: download sample
Signature Formbook
File size:660'480 bytes
First seen:2022-04-19 06:34:02 UTC
Last seen:2022-04-19 07:47:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:OAkAlAfZ9A2lyIebaTD0MZUJrjm5EmwYi1nPqjRUJa9zIBwwH67zMeT2Epd6KUA:MxEFbADsFyEoGnijF03aMeJ
TLSH T1C5E4227A23128592FEBE073DD0661C8477FD671E3023D64E28E6B5CEAB277968300567
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% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 71cc8e2b2b8ecc78 (5 x AgentTesla, 4 x SnakeKeylogger, 3 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence


File Origin
# of uploads :
2
# of downloads :
260
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
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
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
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)
Sample uses process hollowing technique
Self deletion via cmd delete
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 signatures2 2 Behavior Graph ID: 611129 Sample: DHL Shipping Documents.exe Startdate: 19/04/2022 Architecture: WINDOWS Score: 100 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 9 other signatures 2->42 10 DHL Shipping Documents.exe 3 2->10         started        process3 file4 28 C:\Users\...\DHL Shipping Documents.exe.log, ASCII 10->28 dropped 54 Injects a PE file into a foreign processes 10->54 14 DHL Shipping Documents.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 njjbds.com 45.38.148.174, 80 EGIHOSTINGUS United States 17->30 32 cname.ali.g3wei.com 120.79.210.250, 49761, 80 CNNIC-ALIBABA-CN-NET-APHangzhouAlibabaAdvertisingCoLtd China 17->32 34 6 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 msdt.exe 17->21         started        signatures10 process11 signatures12 46 Self deletion via cmd delete 21->46 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-04-19 03:27:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
30
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader campaign:inga loader rat suricata
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
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
40c79c1389c65d04c9cb312c8289809ce29b608ac012a0340d47f3a38e605008
MD5 hash:
8f0fb0965ae5a62713154a5108c02b70
SHA1 hash:
5407d0e0646e663d9b0dc43804618cab796ac671
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
3e3b3778897edbdb7ef6e0d730cf4c2a2761848771fad67b8e54cca55e9c60b9
MD5 hash:
652cc7905f58b22856f8204c1d0655ae
SHA1 hash:
9dab3026c6afe53cc9d4c59d28fc5190226d34e4
SH256 hash:
f3c4d9d64e0c96cff5866974584fe2230b44b9dee2e2f1b18184f10a4ea17d7f
MD5 hash:
a585f1c93e5fa4673e24a7edeb0859b4
SHA1 hash:
4c5f1c60d72119de6237f232c65fae41072bc363
SH256 hash:
7172472f86ff1ff133d5c8ba5bad21ecad8457bf416a5f54e95bee9606639e7d
MD5 hash:
e70ed9e06e6161eebd8c96f36e7b50fa
SHA1 hash:
1789866b0f4ba135471a28d8eaea75151b1bb2c8
SH256 hash:
b5857293816febc37b61e19218f1bb8e52bc6adbcf4e9e13f6fe849ee0370118
MD5 hash:
56f284b7bc749e5f97c1d1c6617afdbf
SHA1 hash:
3b019d864ba6fec84224b122ddd8db5de57675b4
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: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.

Malspam

Formbook

Executable exe b5857293816febc37b61e19218f1bb8e52bc6adbcf4e9e13f6fe849ee0370118

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment

Comments