MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bf4e018e1442fb7815901e53bccc699ee5634e2fcc3ba73327e123ae3d89a65b. 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: bf4e018e1442fb7815901e53bccc699ee5634e2fcc3ba73327e123ae3d89a65b
SHA3-384 hash: 8682a8cc4efabfb097f9f173da74c7d533fa44702cd4b76ffbc96b170a46fe61fd114e9d39294be13a8274beb68848d7
SHA1 hash: a6df9888a58bf5bf2c222279b1ba324e0e821029
MD5 hash: d7122cdaeccec52ebf5e5a2606a6e407
humanhash: papa-freddie-mars-alanine
File name:PO21120008.PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'072'128 bytes
First seen:2021-12-09 08:20:53 UTC
Last seen:2021-12-10 12:27:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'207 x SnakeKeylogger)
ssdeep 24576:Z7BE9nYc6svyXqIXcj/lGApmwcY4jOhbesvpwLXd:Z7BE9Yc5vyBXDCmxY/dZ
TLSH T1D735F020AA67941CE85736F04F167D960E5B8DBEC5029A0623BEF269053E757CF223DC
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
4
# of downloads :
177
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO21120008.PDF.exe
Verdict:
Malicious activity
Analysis date:
2021-12-09 10:55:17 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/059ebc20-4899-43a4-8bfe-f13f4ffc09b3

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/212734/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.10061.21518.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Launching a process
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
keylogger obfuscated packed
Link:
https://www.filescan.io/uploads/61b1bc734d8e6f3a5e1b47bd/reports/8ebc8abe-a2ef-414d-b891-047fb7a32f4f/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cf566243-a7ed-4d9e-8151-f15a3d60a1a1
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/904449
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
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
Sigma detected: Suspicious Double Extension
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 536927 Sample: PO21120008.PDF.exe Startdate: 09/12/2021 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 8 other signatures 2->48 10 PO21120008.PDF.exe 3 2->10         started        14 explorer.exe 2->14         started        process3 file4 32 C:\Users\user\...\PO21120008.PDF.exe.log, ASCII 10->32 dropped 58 Tries to detect virtualization through RDTSC time measurements 10->58 60 Injects a PE file into a foreign processes 10->60 16 PO21120008.PDF.exe 10->16         started        19 PO21120008.PDF.exe 10->19         started        21 PO21120008.PDF.exe 10->21         started        signatures5 process6 signatures7 34 Modifies the context of a thread in another process (thread injection) 16->34 36 Maps a DLL or memory area into another process 16->36 38 Sample uses process hollowing technique 16->38 40 Queues an APC in another process (thread injection) 16->40 23 explorer.exe 16->23 injected process8 process9 25 cscript.exe 23->25         started        signatures10 50 Self deletion via cmd delete 25->50 52 Modifies the context of a thread in another process (thread injection) 25->52 54 Maps a DLL or memory area into another process 25->54 56 Tries to detect virtualization through RDTSC time measurements 25->56 28 cmd.exe 1 25->28         started        process11 process12 30 conhost.exe 28->30         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bf4e018e1442fb7815901e53bccc699ee5634e2fcc3ba73327e123ae3d89a65b/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-12-09 07:07:34 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
30 of 45 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=x5haddquil5xqfmqdzj3ztdjt3swgtrpzq52omzh4er24pmjuznq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:gr1c rat spyware stealer trojan
Link:
https://tria.ge/reports/211209-j81dssbba3/
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
Malware Config
C2 Extraction:
http://www.illusiontrick.com/gr1c/
Unpacked files
SH256 hash:
69c4bb6e6d3a50682f5bed090fc0d85e2f316760dcb33616a5b4da0a085bc4bf
MD5 hash:
e0f4e3bb8f985bf035f08b4c716f8a42
SHA1 hash:
d90ca36998b24d6af4727bf69ff4062446f8c53f
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/e8abf1c2-3f38-40ee-a54b-54bd06795ef0/
Parent samples :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 hash:
938589d95004da82f44a9878b2463ee15400b3f3576720853da3a95eedda29dc
MD5 hash:
164ba7b29ce687ac95e292161984e116
SHA1 hash:
4e393b8251615eebb12a264176782fe12fe1abe0
Link:
https://www.unpac.me/results/e8abf1c2-3f38-40ee-a54b-54bd06795ef0/
SH256 hash:
9cd82dba6c55d901ac7d7007b7a04a30146ad7c297400d44f9d96b90c5ca25d4
MD5 hash:
d9477c36da677507cd33c6eef325d694
SHA1 hash:
330dc88b5041ca9edf57542f5a30c37eef6f11b1
Link:
https://www.unpac.me/results/e8abf1c2-3f38-40ee-a54b-54bd06795ef0/
SH256 hash:
bf4e018e1442fb7815901e53bccc699ee5634e2fcc3ba73327e123ae3d89a65b
MD5 hash:
d7122cdaeccec52ebf5e5a2606a6e407
SHA1 hash:
a6df9888a58bf5bf2c222279b1ba324e0e821029
Link:
https://www.unpac.me/results/e8abf1c2-3f38-40ee-a54b-54bd06795ef0/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/bf4e018e1442/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/bf4e018e1442fb7815901e53bccc699ee5634e2fcc3ba73327e123ae3d89a65b

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 bf4e018e1442fb7815901e53bccc699ee5634e2fcc3ba73327e123ae3d89a65b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/212734/

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