MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5a2c6ad35eae14ca13d811a3a1a445fabee8a8aa63625f25520375a20fe44bd. 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 4 File information Comments
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SHA256 hash: b5a2c6ad35eae14ca13d811a3a1a445fabee8a8aa63625f25520375a20fe44bd
SHA3-384 hash: 1ff3fccdca64b0534bcee78529d29a5f2a03e3c785954a1966596cf9bcf9f282648b6689709fbd224b1ec6cf4c61d692
SHA1 hash: ea54a0675fcdd0e0b189291c4761eff74be6d551
MD5 hash: 3ab23553f9c5ee8d4ef9f22f99456408
humanhash: autumn-eighteen-alanine-enemy
File name:DOCS.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:699'392 bytes
First seen:2021-09-02 09:31:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:deZhKL6CaM39wlzkjGPk2rRUGF7z9LGCILR:dWCP9MzooUEz9LGPd
Threatray 9'103 similar samples on MalwareBazaar
TLSH T17DE41B3E19FE23279176C7D5CBE48823F6D098AF3233A96567D747264316A4634C322E
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
199
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DOCS.exe
Verdict:
Malicious activity
Analysis date:
2021-09-02 09:33:02 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/77008024-bee4-4498-8e5e-3d0eace6e87c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/184722/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.FKE.genEldorado.28515.22177.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9cce21aa-ef2f-438c-8efd-564510c8a852
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/843904
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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
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
Uses ipconfig to lookup or modify the Windows network settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 476335 Sample: DOCS.exe Startdate: 02/09/2021 Architecture: WINDOWS Score: 100 31 www.learnsmartly.net 2->31 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 7 other signatures 2->45 11 DOCS.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\DOCS.exe.log, ASCII 11->29 dropped 59 Tries to detect virtualization through RDTSC time measurements 11->59 61 Injects a PE file into a foreign processes 11->61 15 DOCS.exe 11->15         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 18 explorer.exe 15->18 injected process9 dnsIp10 33 www.artepohome.com 91.195.240.117, 49733, 80 SEDO-ASDE Germany 18->33 35 impactaccountingsolutions.com 69.20.104.42, 49732, 80 RACKSPACEUS United States 18->35 37 14 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 49 Uses ipconfig to lookup or modify the Windows network settings 18->49 22 ipconfig.exe 18->22         started        signatures11 process12 signatures13 51 Self deletion via cmd delete 22->51 53 Modifies the context of a thread in another process (thread injection) 22->53 55 Maps a DLL or memory area into another process 22->55 57 Tries to detect virtualization through RDTSC time measurements 22->57 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b5a2c6ad35eae14ca13d811a3a1a445fabee8a8aa63625f25520375a20fe44bd/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2021-09-02 08:55:22 UTC
AV detection:
5 of 36 (13.89%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wwrmnljv5lquzij5qendugsel6v65cukuy3cl4svea3vuih6is6q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0ae1df4d50a7ed640973980699737b85e8947baef0087c511b4b1ebf8bdc22ba
Formbook
33a9702e83888498799c0144e3a3ac06e095aa452ce066a02a3860dcd90d6bb8
Formbook
37d7d0735e4cedf32ffff58f24330efb4b9fd08cf836ca876350e69ee769ae66
Formbook
5ffbe2b24599383732373e34a80cd2cf864d806595d80dfc1e1ae3af83065780
Formbook
ba02b1ff767d07fbcd13529b70ce92a08238ef31bdfc4058b23023fc8176d26b
Formbook
eeb09100ff7eb31eb91735290de6a3cfe364b50365f4713aef21f7cf3db5744d
Formbook
+ 9'093 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:imm8 loader rat suricata
Link:
https://tria.ge/reports/210902-gthtj49p8x/
Behaviour
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
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.impactaccountingsolutions.com/imm8/
Unpacked files
SH256 hash:
19ad8f76ee9b6aad9de40d81efac29db12f45a1acb3af6be469ef6ec7ed1b2ac
MD5 hash:
079e47880b0579fdcb175f07bdbec8f2
SHA1 hash:
8a5e1704451077421f748b5c93b50cdb5a39bc52
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/4a780522-f679-4d1b-9093-b5cca7664edf/
Parent samples :
0ae1df4d50a7ed640973980699737b85e8947baef0087c511b4b1ebf8bdc22ba
eeb09100ff7eb31eb91735290de6a3cfe364b50365f4713aef21f7cf3db5744d
37d7d0735e4cedf32ffff58f24330efb4b9fd08cf836ca876350e69ee769ae66
33a9702e83888498799c0144e3a3ac06e095aa452ce066a02a3860dcd90d6bb8
b5a2c6ad35eae14ca13d811a3a1a445fabee8a8aa63625f25520375a20fe44bd
87e35b392f0e6ba445a7b302b087c7c443d7188240b2efb742d01ab7a62534ed
21d66e706ba5aa94f0c778ec914896b5c26db0c14ec93822cbe00525c2139845
SH256 hash:
51435e975af7774028ba80f6f2748478db5916f417f0ca75666fac1631e3171b
MD5 hash:
87e9167518034aa15a00fbc9be4fa786
SHA1 hash:
c97806b678fcd0b70bf5d176dbcc6125ef8be8e3
Link:
https://www.unpac.me/results/4a780522-f679-4d1b-9093-b5cca7664edf/
SH256 hash:
81f9eac76804c02f5baaa34c91b5775f965a34ad7811218d9c24e50cb6d9a90c
MD5 hash:
bae511742374b721136acaa03b0c1fa0
SHA1 hash:
215c50455b01a78ea173bbb034ddbe4b452ea734
Link:
https://www.unpac.me/results/4a780522-f679-4d1b-9093-b5cca7664edf/
SH256 hash:
b5a2c6ad35eae14ca13d811a3a1a445fabee8a8aa63625f25520375a20fe44bd
MD5 hash:
3ab23553f9c5ee8d4ef9f22f99456408
SHA1 hash:
ea54a0675fcdd0e0b189291c4761eff74be6d551
Link:
https://www.unpac.me/results/4a780522-f679-4d1b-9093-b5cca7664edf/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b5a2c6ad35eae14ca13d811a3a1a445fabee8a8aa63625f25520375a20fe44bd

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
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 b5a2c6ad35eae14ca13d811a3a1a445fabee8a8aa63625f25520375a20fe44bd

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/184722/

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