MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 813b1c80e4ae56eeeed84af1dc6a79df452cb2c9bea229b02fb06db4b0df2df6. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 813b1c80e4ae56eeeed84af1dc6a79df452cb2c9bea229b02fb06db4b0df2df6
SHA3-384 hash: f257b54fb976e90b5a9904f5a0e8f16824332ac7fd3d7a4be6a9e1e4c1e36737df48801fbee7720d57b306f09583ba13
SHA1 hash: b3d59905269c3cf8e6b086c0a497c8ec87f44203
MD5 hash: 4b606f1120950765e7034a1896a5898b
humanhash: steak-nitrogen-nebraska-west
File name:8jHRSSqKLmQcyYI.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:774'144 bytes
First seen:2022-06-01 10:15:47 UTC
Last seen:2022-06-01 10:43:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:9B6jG92lKRCcDpjwrRD6LmdXAOkfUalvjGe2enzWhEOHX5cviLEbwz1:Xeu2KCcD8R2LGIUQceCE8aVbK1
TLSH T189F4CF0BF2ADC71ED6544633F0FA413443A0DF079622E6567AC5EEAE096339F1E422D9
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon ecec889ce6d8e8f0 (40 x Formbook, 21 x AgentTesla, 12 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
310
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
8jHRSSqKLmQcyYI.exe
Verdict:
Malicious activity
Analysis date:
2022-06-01 11:22:16 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/f2ae186f-eb7d-4e8c-9990-9e2d886616cd

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/276006/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.50360143.15410.7129.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c5ab5861-b4ee-48d1-95a8-701e36df041d
Result
Threat name:
Unknown
Detection:
malicious
Classification:
evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1004932
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/813b1c80e4ae56eeeed84af1dc6a79df452cb2c9bea229b02fb06db4b0df2df6/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2022-05-31 19:53:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
17 of 41 (41.46%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qe5rzahevzlo53wyjly5y2tz35cszmwjx2rctmbpwbw3jmg7fx3a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:heds loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220601-matedabfbn/
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
Drops file in Program Files directory
Suspicious use of SetThreadContext
Deletes itself
Reads user/profile data of web browsers
Adds policy Run key to start application
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
90eb3b67fe88efdcaefaecd2f8f238f2c7da65ea46775f15fa5c6b9c13056ad7
MD5 hash:
97dc1517ccbd11aab5766486834bd21f
SHA1 hash:
3d4f76c1fc1d210e0d527798b4aa30ae848d9845
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/9fa3b940-3c43-474d-b404-d68e342e593b/
Parent samples :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 hash:
323e2fec963f46d5a07880519dfa02e709ac0d1e16a051ff4c88f8fce4f51aa9
MD5 hash:
d36cc733cc75909b7cc578ecdf685782
SHA1 hash:
3db3ee5ca4c44eeb1e9c95670ed99c1d16dc5d5c
Link:
https://www.unpac.me/results/9fa3b940-3c43-474d-b404-d68e342e593b/
SH256 hash:
02a07623fef8643d14758963d3c79f46d5118fc65d5907d636a093b4fb249564
MD5 hash:
f64806eca9c78e125547ab9ebc9eb407
SHA1 hash:
364b035af764ccbbd3deaa0e5075350be47dbc46
Link:
https://www.unpac.me/results/9fa3b940-3c43-474d-b404-d68e342e593b/
SH256 hash:
879c29560b21be7d9b69ca27ca4756df86e080fa3e34cb191aad5cb1e5f05504
MD5 hash:
30b6a54a992eae921a2eb8c5ea130911
SHA1 hash:
1c83f0319bffe007077c6656418c9b7344d5affe
Link:
https://www.unpac.me/results/9fa3b940-3c43-474d-b404-d68e342e593b/
SH256 hash:
38b18909c60403a345b76d1b63649cc03129722ccfa01e16c745bedf8fe2b4b8
MD5 hash:
6d9e60bae3177b8a24ad29035f965756
SHA1 hash:
10c5f67e3d19e3e7564df94a10520318d4abbd7c
Link:
https://www.unpac.me/results/9fa3b940-3c43-474d-b404-d68e342e593b/
SH256 hash:
813b1c80e4ae56eeeed84af1dc6a79df452cb2c9bea229b02fb06db4b0df2df6
MD5 hash:
4b606f1120950765e7034a1896a5898b
SHA1 hash:
b3d59905269c3cf8e6b086c0a497c8ec87f44203
Link:
https://www.unpac.me/results/9fa3b940-3c43-474d-b404-d68e342e593b/
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/813b1c80e4ae56eeeed84af1dc6a79df452cb2c9bea229b02fb06db4b0df2df6

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 813b1c80e4ae56eeeed84af1dc6a79df452cb2c9bea229b02fb06db4b0df2df6

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/276006/

Comments