MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f57a283465e1965bd586936e894031d903ce7f721f8b02069e83cd8f19734a4a. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f57a283465e1965bd586936e894031d903ce7f721f8b02069e83cd8f19734a4a
SHA3-384 hash: a945f43b11c81f86d983120b58949c2bc015edb30189dd9290166f4d20f2bcf5af436f1b6ad3232215f22f58b2b06e73
SHA1 hash: d6529a20eb619978215ccd93dd4f992341f880a2
MD5 hash: dbe390ebb5e1ca215de123ba1363de6b
humanhash: ten-mobile-friend-double
File name:PO.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'313'792 bytes
First seen:2021-12-06 08:18:23 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 24576:OFGfIzLN2+QtiC8OfcOD38scSt3foRDfOxedkSe5sPwo2w/y:OqIzLNT45/D3vfMX4oFK
TLSH T134556A5C317025AFE83A853145541F379EF12C7D866B93CE7317306B8ABE5868F242EA
File icon (PE):PE icon
dhash icon 86e8c0c8ccd89ce6 (18 x AgentTesla, 18 x Formbook, 8 x Loki)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
184
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO.exe
Verdict:
Malicious activity
Analysis date:
2021-12-06 08:22:43 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/8f60d74f-7152-48d7-9a92-58b4c1ae2215

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/211688/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61adc7774d8e6f3a5e13f0cd/reports/9276c54f-326c-4854-be34-8f28b6d5b603/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c4d6cc28-e9b3-45cc-a41d-51a8d4e1cf08
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/902130
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
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
PE file contains section with special chars
PE file has nameless sections
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: CMSTP Execution Process Creation
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 dnsIp2 2 Behavior Graph ID: 534604 Sample: PO.exe Startdate: 06/12/2021 Architecture: WINDOWS Score: 100 33 www.auburnradiancecavern.com 2->33 35 www.bjhyc.net 2->35 37 shops.myshopify.com 2->37 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 8 other signatures 2->45 11 PO.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\AppData\Local\...\PO.exe.log, ASCII 11->31 dropped 55 Tries to detect virtualization through RDTSC time measurements 11->55 57 Injects a PE file into a foreign processes 11->57 59 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->59 15 PO.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 process10 20 cmstp.exe 18->20         started        signatures11 47 Self deletion via cmd delete 20->47 49 Modifies the context of a thread in another process (thread injection) 20->49 51 Maps a DLL or memory area into another process 20->51 53 Tries to detect virtualization through RDTSC time measurements 20->53 23 WerFault.exe 17 10 20->23         started        25 cmd.exe 1 20->25         started        process12 process13 27 explorer.exe 1 153 23->27         started        29 conhost.exe 25->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f57a283465e1965bd586936e894031d903ce7f721f8b02069e83cd8f19734a4a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-12-06 08:19:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
23 of 27 (85.19%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6v5cqndf4glfxvmgsnxisqbr3eb4473sd6fqebu6qpgy6gltjjfa._file
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:ecus loader rat suricata
Link:
https://tria.ge/reports/211206-j7vf6adehp/
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
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.ptintelligence.com/ecus/
Unpacked files
SH256 hash:
a1c60715bf9f282366fd05e069d08d4271661880af8ef1955cb5981764709b48
MD5 hash:
48cdff0ba4a45842701ebbf1e8cce5de
SHA1 hash:
89d512fc942cca21959319ab96c1de3725138105
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/d9ff90bd-ac0a-4a65-a42c-4bf94e1853b6/
Parent samples :
dce5f044b1f4396f33c3574667169dcbdeb3aebb037c9f53d7a8c38e095f576d
7415f5e7f8ae4514ca13ec7ae4e3b4005e93c63eaba82d03048de5f60eb784fa
47e997e572407a3a805deaa7e7bca8d20990f23901c7199f1add2e550763dbf5
733d497a01920cda976dbb7008a4bbf8f1ad7e2e6935a72ac16c060f0beffc5e
f57a283465e1965bd586936e894031d903ce7f721f8b02069e83cd8f19734a4a
248b6eeee418dfa9bfae299491cc483275e1820f001b7b21ab6cd29a762e2a34
99cbf8420f8b393dd010f7332f2d0b52b2316961f2b29b298639eef737de2ebf
SH256 hash:
975ab65f12d923802fd2479b361a4a6d1627876f2e2379236b85f81c72575ded
MD5 hash:
d50b29ea9bb73c9a1b0c82163a0348be
SHA1 hash:
a41fa75a320d00b7f2fbc0969ea7d109d822ab3a
Link:
https://www.unpac.me/results/d9ff90bd-ac0a-4a65-a42c-4bf94e1853b6/
SH256 hash:
1eba3e6e55f4aa87ee88dad11183f808f00870bf6277e3ae19fb31400a1dbe5b
MD5 hash:
00b620728472aef2af115e0455930cf8
SHA1 hash:
649a4ad0f13a3176ea36b855c1b36fbce246446a
Link:
https://www.unpac.me/results/d9ff90bd-ac0a-4a65-a42c-4bf94e1853b6/
SH256 hash:
f57a283465e1965bd586936e894031d903ce7f721f8b02069e83cd8f19734a4a
MD5 hash:
dbe390ebb5e1ca215de123ba1363de6b
SHA1 hash:
d6529a20eb619978215ccd93dd4f992341f880a2
Link:
https://www.unpac.me/results/d9ff90bd-ac0a-4a65-a42c-4bf94e1853b6/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/f57a283465e1/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.51
Link:
https://yomi.yoroi.company/submissions/f57a283465e1965bd586936e894031d903ce7f721f8b02069e83cd8f19734a4a

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 f57a283465e1965bd586936e894031d903ce7f721f8b02069e83cd8f19734a4a

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/211688/

Comments