MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c4d1c39814d1e2d2aff5e0bd608585c6ff9c932c3480d73eb30310cf3c4be029. 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 7 File information Comments
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SHA256 hash: c4d1c39814d1e2d2aff5e0bd608585c6ff9c932c3480d73eb30310cf3c4be029
SHA3-384 hash: 8563ad3db44ac5369d50dd8176447d09145b382314376401815a957ce9694fa6bd09d0ce2d45eebb12f8a8cf6af915ec
SHA1 hash: 3e1c99df19444b2441add587488d08d104b1f0ce
MD5 hash: 4bdca6f10a1373637dd801a75fc1f81c
humanhash: robin-october-maine-speaker
File name:DHL-Official-Returned Document_Details & Forms for shipment_Monday_03_10.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:450'032 bytes
First seen:2022-10-03 08:06:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:1wdzgWHDaQSfwCnF3a44NPaQkodOEisSAv++Ki:AtsfJ3kaQlOEijw8
TLSH T1D6A42AF0317D8383D1A28DB11FCA8A70B9F175ADA8D0560DA0F59B2DD3D2395249C9FA
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon d4a6a494a48484a4 (65 x AgentTesla, 39 x Formbook, 8 x RemcosRAT)
Reporter abuse_ch
Tags:DHL exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
255
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/316015/
Detection(s):
SecuriteInfo.com.Trojan.InjectNET.50.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Сreating synchronization primitives
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated overlay packed
Link:
https://www.filescan.io/uploads/633a9834c9e2f34354325dcf/reports/39d73b54-a67e-492c-b277-fea7d18d65cf/overview
Result
Verdict:
UNKNOWN
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/831576f9-7ff0-4f5e-9856-b62ad0967078
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1082246
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
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 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
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 714807 Sample: DHL-Official-Returned Docum... Startdate: 03/10/2022 Architecture: WINDOWS Score: 100 34 Multi AV Scanner detection for domain / URL 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 Antivirus / Scanner detection for submitted sample 2->38 40 7 other signatures 2->40 8 DHL-Official-Returned Document_Details & Forms for shipment_Monday_03_10.exe 1 2->8         started        process3 file4 22 DHL-Official-Retur...onday_03_10.exe.log, CSV 8->22 dropped 50 Writes to foreign memory regions 8->50 52 Allocates memory in foreign processes 8->52 54 Injects a PE file into a foreign processes 8->54 12 cvtres.exe 8->12         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 12->56 58 Maps a DLL or memory area into another process 12->58 60 Sample uses process hollowing technique 12->60 62 Queues an APC in another process (thread injection) 12->62 15 explorer.exe 12->15 injected process8 dnsIp9 24 schwarznaeher.net 81.169.145.148, 49724, 49725, 49726 STRATOSTRATOAGDE Germany 15->24 26 www.nft-painting.xyz 64.190.63.111, 49711, 80 NBS11696US United States 15->26 28 14 other IPs or domains 15->28 30 System process connects to network (likely due to code injection or exploit) 15->30 32 Performs DNS queries to domains with low reputation 15->32 19 control.exe 13 15->19         started        signatures10 process11 signatures12 42 Tries to steal Mail credentials (via file / registry access) 19->42 44 Tries to harvest and steal browser information (history, passwords, etc) 19->44 46 Modifies the context of a thread in another process (thread injection) 19->46 48 Maps a DLL or memory area into another process 19->48
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/c4d1c39814d1e2d2aff5e0bd608585c6ff9c932c3480d73eb30310cf3c4be029/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-10-03 03:21:48 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yti4hgau2hrnfl7v4c6wbbmfy37zzezmgsanopvtamim6pcl4auq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:sfku rat spyware stealer trojan
Link:
https://tria.ge/reports/221003-jzzqxafhen/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
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
Enumerates physical storage devices
Drops file in System32 directory
Suspicious use of SetThreadContext
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/a3585996-8671-421b-9cd1-e39a523e1548
Unpacked files
SH256 hash:
50d566179d423d19a87715270b3db74d4ee0771b85a463afa4da787bdb8f21e2
MD5 hash:
83b46bb03bafa18e9338d7f8536771c6
SHA1 hash:
23ee859a10e89e836d83e8ed94db59ef6aee05cc
Link:
https://www.unpac.me/results/9a88ebc9-0407-4561-9c0f-cc1b6758fad8/
SH256 hash:
bdb78e62c86d8d5c4ed7ab8f20ba588ae3500fb03e62b2a3e3ec3f54106e1442
MD5 hash:
9a499fbdcad33dc6f7455054bb53b60d
SHA1 hash:
bd4dd3912cf0d5ce8d9ff253903871f3b640bc85
Link:
https://www.unpac.me/results/9a88ebc9-0407-4561-9c0f-cc1b6758fad8/
SH256 hash:
c8a113f4a247a6424208be28e2e2ade4ad862999caed76c1d39ce426e1c0aa40
MD5 hash:
13bda2deebf7f5ef091522ec2be9ded4
SHA1 hash:
2af1d935faa9e04eabe067f36acdf0486a234d8f
Link:
https://www.unpac.me/results/9a88ebc9-0407-4561-9c0f-cc1b6758fad8/
SH256 hash:
c4d1c39814d1e2d2aff5e0bd608585c6ff9c932c3480d73eb30310cf3c4be029
MD5 hash:
4bdca6f10a1373637dd801a75fc1f81c
SHA1 hash:
3e1c99df19444b2441add587488d08d104b1f0ce
Link:
https://www.unpac.me/results/9a88ebc9-0407-4561-9c0f-cc1b6758fad8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/c4d1c39814d1e2d2aff5e0bd608585c6ff9c932c3480d73eb30310cf3c4be029

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:RansomwareTest8
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
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 c4d1c39814d1e2d2aff5e0bd608585c6ff9c932c3480d73eb30310cf3c4be029

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/316015/

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