MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8f55afc17398bdb231a27affe7f36c7424ca2c47d205c9f94df6e2b99befa93. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8f55afc17398bdb231a27affe7f36c7424ca2c47d205c9f94df6e2b99befa93
SHA3-384 hash: 8e8710bc196b86acb2bc17fefd03dfd96945678b9f7625be2c4d3516ea603b60636b5e01f6c989cec50cccc3fc1cb755
SHA1 hash: 473bdc7827b8f8e1b5bf2f54a2ad27d95a1a5e56
MD5 hash: a1493be571c25bfc9b4fa7eba23b6e8e
humanhash: muppet-september-winner-equal
File name:PROFORMA INVOICE.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:910'336 bytes
First seen:2022-10-20 12:48:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:RoCrA7iLEM2sS+BgplTiUmiZIEQoiWBq+jTa:RoCxe+sT1/uX+jTa
Threatray 14'958 similar samples on MalwareBazaar
TLSH T1C4155C2829EB461CF43A5BF99FD7B4CA4EABF621212AF5DD14AD03824523E05CDD3235
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
185
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PROFORMA INVOICE.exe
Verdict:
Malicious activity
Analysis date:
2022-10-20 12:51:46 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/4f38958a-03dc-4e31-8f35-93192f092834

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/321990/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.61676221.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file
Сreating synchronization primitives
Searching for synchronization primitives
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/635143bf455bf4ac5c716a7d/reports/dbb6fbed-18f1-4b75-9d18-6033ee418f30/overview
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/18b000f6-fdf1-42b2-a367-68bd7c48c32e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1094140
Signature
.NET source code contains very large strings
C2 URLs / IPs found in 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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
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 harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 726771 Sample: PROFORMA INVOICE.exe Startdate: 20/10/2022 Architecture: WINDOWS Score: 100 29 www.53kzl.xyz 2->29 33 Snort IDS alert for network traffic 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 8 other signatures 2->39 9 PROFORMA INVOICE.exe 3 2->9         started        signatures3 process4 file5 23 C:\Users\user\...\PROFORMA INVOICE.exe.log, ASCII 9->23 dropped 49 Writes to foreign memory regions 9->49 51 Injects a PE file into a foreign processes 9->51 13 RegSvcs.exe 9->13         started        signatures6 process7 signatures8 53 Modifies the context of a thread in another process (thread injection) 13->53 55 Maps a DLL or memory area into another process 13->55 57 Queues an APC in another process (thread injection) 13->57 16 explorer.exe 13->16 injected process9 dnsIp10 25 bunniesfor-sales.site 64.190.62.22, 49695, 80 NBS11696US United States 16->25 27 www.bunniesfor-sales.site 16->27 31 System process connects to network (likely due to code injection or exploit) 16->31 20 msdt.exe 13 16->20         started        signatures11 process12 signatures13 41 Tries to steal Mail credentials (via file / registry access) 20->41 43 Tries to harvest and steal browser information (history, passwords, etc) 20->43 45 Modifies the context of a thread in another process (thread injection) 20->45 47 Maps a DLL or memory area into another process 20->47
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8f55afc17398bdb231a27affe7f36c7424ca2c47d205c9f94df6e2b99befa93/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-10-19 15:14:44 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xd2vv7axhgf5wiy2e6x747zwy5beziwepuqfzh4u35xcxgn67kjq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
049d7eff2158529f5b40f93cb3a5fb3d16ac99313bca428d4c047e344ade25fa
Formbook
3ca280d2c5ee9398048047d72c785b1927a7a09c1d4a637737b1d3902587f948
Formbook
4994e7acf451ce7d8abdccb79cce806011f09bd49a811fcd2689f32a51fdee09
Formbook
53304618643cdc79b032becca67d8f5b29e7202ec25e7bb724ce712a03ec6592
Formbook
684abdf2d2c027b52fd633c26253cecb40f71f8fb341b6e60bed1ab8d79fe19e
Formbook
74866c9e39b3fc10fa60155dad5cfb2e6b98c8d938349584ff6c358bf69c8482
Formbook
7ca3b28aa32d6b9bd972c430c47691db7212f9fd7b713c3ff2fab8b10a0bd66a
Formbook
806a765203bdd0a1e4c715bf6022dce830d04ae041ef978b3b2890b158a7e180
Formbook
8af9276a69ab25e20e96921b19b6d3dd4b8d15c7472addbad8a89757fe4251ef
Formbook
9deb843c2acb12488c174fd87435431dcc1fac8c1fe33e55aa603cfe3e013c77
Formbook
+ 14'948 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:dj6o rat spyware stealer trojan
Link:
https://tria.ge/reports/221020-p2cbaaedc8/
Behaviour
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
Suspicious use of SetThreadContext
Loads dropped DLL
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/b937fa33-4381-4350-9595-5f57f6825a39
Unpacked files
SH256 hash:
2864947a97315bfb19dec7cdbb106d315d053ac8a28c4047dc4ae2545504f449
MD5 hash:
606d9eefd0cfa76b39517dc0c96c0824
SHA1 hash:
e02de6a8d4822dfa1358d30d08f77d1c02268b9b
Detections:
XLoader
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/51094a22-3e9d-4494-a84a-d728116c3bfe/
Parent samples :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 hash:
35b2604527cdb330c5b0c20e961bb8b88cb1a3eff0de70246be9b62b85fdd59d
MD5 hash:
8f8dcca4fabf1c13ad59f55dc145c7e8
SHA1 hash:
108a75e830a13b250a127dd45bb041dc1392fdba
Link:
https://www.unpac.me/results/51094a22-3e9d-4494-a84a-d728116c3bfe/
SH256 hash:
a0e880bd30f8ed013a7db4264740540eba8c28e171aa933ab453f379021df8c6
MD5 hash:
9f2242474623928093616e4185d5f989
SHA1 hash:
84d95dda3d22ad1b4a16b96dfe75dc5dca984df1
Link:
https://www.unpac.me/results/51094a22-3e9d-4494-a84a-d728116c3bfe/
SH256 hash:
4f80ddfe49b270f801ab44aa899153bbe2a0fb93abed0f9fc992f74ff6ab4fde
MD5 hash:
f4ba8570299eabf8fe2d02cc1dc0606a
SHA1 hash:
5d7add32313074f5a1e9b4ab379298dee8b6217e
Link:
https://www.unpac.me/results/51094a22-3e9d-4494-a84a-d728116c3bfe/
SH256 hash:
b8f55afc17398bdb231a27affe7f36c7424ca2c47d205c9f94df6e2b99befa93
MD5 hash:
a1493be571c25bfc9b4fa7eba23b6e8e
SHA1 hash:
473bdc7827b8f8e1b5bf2f54a2ad27d95a1a5e56
Link:
https://www.unpac.me/results/51094a22-3e9d-4494-a84a-d728116c3bfe/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b8f55afc1739/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/b8f55afc17398bdb231a27affe7f36c7424ca2c47d205c9f94df6e2b99befa93

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
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 b8f55afc17398bdb231a27affe7f36c7424ca2c47d205c9f94df6e2b99befa93

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/321990/

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