MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1910bc92f591b3feb607aac1518fe2cc6c834b627b76637cb27464006e072a22. 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 4 File information Comments
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SHA256 hash: 1910bc92f591b3feb607aac1518fe2cc6c834b627b76637cb27464006e072a22
SHA3-384 hash: 836a02dbcb11edb48aa1edef2b38346b5c6e6fe510a9197da4cdd9d7e512b87f83c8660a2fbb110d6e5acb16c7fe7501
SHA1 hash: 14bf703e576ff1b76b9ad540fda7bbdd748e78c0
MD5 hash: c143e48329117200f2fed704dd8a3427
humanhash: autumn-colorado-steak-seventeen
File name:Reversed Invoice for new products.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:602'112 bytes
First seen:2021-10-31 10:27:55 UTC
Last seen:2021-11-01 10:01:06 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:SSMGMjxDLOgrWm6bZlrlxeFe5UkyQF52MMMMMMMMMMMuMMMMMMMMMMMMMMMMMMMB:p1MjxD6kWJ5YWB52MMMMMMMMMMMuMMMn
TLSH T139D4AE90A69194E6CEF81E7B6E1AEE300B217DFCE125846531DC3D9F75F6AF30244292
File icon (PE):PE icon
dhash icon 74fcd6e4d4d4d4d4 (17 x AgentTesla, 4 x Formbook, 2 x RemcosRAT)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
282
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Reversed Invoice for new products.exe
Verdict:
Malicious activity
Analysis date:
2021-10-31 10:34:14 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/a875789d-adf5-4acd-beb6-2388a8b8708d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.6999.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
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/cda36ca6-beb2-4846-9328-660378265c2d
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/879983
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 512417 Sample: Reversed Invoice for new pr... Startdate: 31/10/2021 Architecture: WINDOWS Score: 100 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 8 other signatures 2->44 10 Reversed Invoice for new products.exe 3 2->10         started        process3 file4 30 Reversed Invoice f...ew products.exe.log, ASCII 10->30 dropped 56 Injects a PE file into a foreign processes 10->56 14 Reversed Invoice for new products.exe 10->14         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 17 explorer.exe 14->17 injected process8 dnsIp9 32 www.aprilsaak.quest 37.123.118.150, 49820, 80 UK2NET-ASGB United Kingdom 17->32 34 hfhcatering.com 195.201.27.201, 49824, 80 HETZNER-ASDE Germany 17->34 36 www.hfhcatering.com 17->36 46 System process connects to network (likely due to code injection or exploit) 17->46 21 wscript.exe 17->21         started        24 autochk.exe 17->24         started        signatures10 process11 signatures12 48 Self deletion via cmd delete 21->48 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 26 cmd.exe 1 21->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1910bc92f591b3feb607aac1518fe2cc6c834b627b76637cb27464006e072a22/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-10-31 06:38:55 UTC
AV detection:
18 of 44 (40.91%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=deilzexvsgz75nqhvlavdd7czrwigs3cpn3gg7fsorsaa3qhfira._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:r4gk rat spyware stealer trojan
Link:
https://tria.ge/reports/211031-mhnh4afhb4/
Behaviour
Gathers network information
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.aprilsaak.quest/r4gk/
Unpacked files
SH256 hash:
c61f6a0fd94660d9cc012788f67e089482e2b9743b00fa2c19dca96abfe833f6
MD5 hash:
8bb6b6d0be4eba9ea6eac2d16dc37860
SHA1 hash:
34e95e9a52e8252c6ef2d2d174834673afc3d0f7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/9ed6140c-5377-4b11-8ad9-152ccbedee97/
Parent samples :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 hash:
7e5031ccdfed487f9f1b3390c497803d97543ebaedf1269811d6484595ece874
MD5 hash:
2316f10e67316d57fb11cfe8efa528ad
SHA1 hash:
ad5379dffe1febe07f232fa76d5b5a9586081ea5
Link:
https://www.unpac.me/results/9ed6140c-5377-4b11-8ad9-152ccbedee97/
SH256 hash:
4d1ee061c817ea30ca4e461a4f44388662c1c1c2775be2b323858ddbc1679b35
MD5 hash:
1b6d3d31872537cc611ff4322ffc1099
SHA1 hash:
0108adafb207ce044bfb3f7933da45594c545bee
Link:
https://www.unpac.me/results/9ed6140c-5377-4b11-8ad9-152ccbedee97/
SH256 hash:
1910bc92f591b3feb607aac1518fe2cc6c834b627b76637cb27464006e072a22
MD5 hash:
c143e48329117200f2fed704dd8a3427
SHA1 hash:
14bf703e576ff1b76b9ad540fda7bbdd748e78c0
Link:
https://www.unpac.me/results/9ed6140c-5377-4b11-8ad9-152ccbedee97/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/1910bc92f591b3feb607aac1518fe2cc6c834b627b76637cb27464006e072a22

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 1910bc92f591b3feb607aac1518fe2cc6c834b627b76637cb27464006e072a22

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment

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