MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7c57d141f4c57d4ab30efd69206dc0a236ed915b2dbc437a9305b860e66e8a3c. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7c57d141f4c57d4ab30efd69206dc0a236ed915b2dbc437a9305b860e66e8a3c
SHA3-384 hash: 42352ea7878db5730b8567cf5fef228a10b5af691086cba512a830f87fb162e456c72c9fd0b7773ecad1413621645c28
SHA1 hash: be4ca1e7e6a23784efce031f83c0232141cd0718
MD5 hash: 0d3f3677ea8d45a57d725d61c71c172b
humanhash: rugby-apart-river-kentucky
File name:u1zBYqsipafStki.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:868'352 bytes
First seen:2023-12-07 16:48:25 UTC
Last seen:2023-12-07 18:18:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:MaqvKgABiOX57dhpovj+6xuXvQDX7xRRVHZUvKeUtfysEa7ueH5qTIx:2OX5ZhSrXiQDFRRoZU5dEapq2
Threatray 3'462 similar samples on MalwareBazaar
TLSH T16E05F105B7B5EF36CA7547FF820072201F7E5E9265B1FA4C2C9A71DA2EB5F019204A63
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 31f098b29298f031 (53 x AgentTesla, 30 x Formbook, 12 x RedLineStealer)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
289
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/463309/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Restart of the analyzed sample
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6571f782fa995ae1533fdc38/reports/7c7d98e4-adeb-4049-8367-3e7116dda76a/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/7c57d141f4c57d4ab30efd69206dc0a236ed915b2dbc437a9305b860e66e8a3c
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:
Malicious Packer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/27319a5a-8056-45ac-83af-e03998d7a4e9
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1355629
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Snort IDS alert for network traffic
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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1355629 Sample: u1zBYqsipafStki.exe Startdate: 07/12/2023 Architecture: WINDOWS Score: 100 16 api.telegram.org 2->16 18 ip-api.com 2->18 24 Snort IDS alert for network traffic 2->24 26 Found malware configuration 2->26 28 Malicious sample detected (through community Yara rule) 2->28 32 10 other signatures 2->32 7 u1zBYqsipafStki.exe 3 2->7         started        signatures3 30 Uses the Telegram API (likely for C&C communication) 16->30 process4 signatures5 34 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 7->34 36 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->36 38 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->38 40 2 other signatures 7->40 10 u1zBYqsipafStki.exe 15 2 7->10         started        14 u1zBYqsipafStki.exe 7->14         started        process6 dnsIp7 20 ip-api.com 208.95.112.1, 49707, 80 TUT-ASUS United States 10->20 22 api.telegram.org 149.154.167.220, 443, 49709, 49710 TELEGRAMRU United Kingdom 10->22 42 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 10->42 44 Tries to steal Mail credentials (via file / registry access) 10->44 46 Tries to harvest and steal browser information (history, passwords, etc) 10->46 48 Installs a global keyboard hook 10->48 signatures8
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/7c57d141f4c57d4ab30efd69206dc0a236ed915b2dbc437a9305b860e66e8a3c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7c57d141f4c57d4ab30efd69206dc0a236ed915b2dbc437a9305b860e66e8a3c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-12-06 15:26:51 UTC
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=prl5cqpuyv6uvmyo7vusa3oaui3o3ek3fw6eg6utaw4gbztori6a._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
0f38e9bb118683c47ed9ac3b745683a8b66b9386ab0ac538e7b52dc5ce7b0130
Formbook
18e7407574a68f77e1fae3d3c818d864b7a61b044e16805f684968335197cc7d
Formbook
7c57d141f4c57d4ab30efd69206dc0a236ed915b2dbc437a9305b860e66e8a3c
Formbook
c6800ce0835e6faf9ecb2513a34ebb7e57943dcb506ecde04b854b3d4208cd57
Formbook
e50d396fce14d5c6f58251adb5967d37862e8f2931d760ea76557e45086c30bf
Formbook
f13fe7c53a790d33a00e6bd4e5763b1a333a6613311daf6c54cc85420335f383
Formbook
+ 3'452 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/231207-vc4bcsdg48/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot6488735902:AAFjq98r8SzTcc0BHWZQiLUk749fQ78ULos/
Unpacked files
SH256 hash:
b6009df478469947dd0f788cf071b992ec0b81de23c959fee2afafc76f832801
MD5 hash:
43bc5e3918f7d56941f4efcd02ce9bac
SHA1 hash:
ef2ae544efa1eaa07eb366818ff815d1024630e0
Link:
https://www.unpac.me/results/d635b45c-b08c-4f25-997c-2fcdaa49904f/
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/d635b45c-b08c-4f25-997c-2fcdaa49904f/
SH256 hash:
fad7200fb72b038fcdd718e5503d6b7490619757cea637feb41caf8de79f7705
MD5 hash:
4324f814f8806f9ecc02071a13afe7b3
SHA1 hash:
9da18003d6eb3366908490b1271354bd1f368ce5
Detections:
win_agent_tesla_g2
Create hunting rule
Link:
https://www.unpac.me/results/d635b45c-b08c-4f25-997c-2fcdaa49904f/
Parent samples :
7c57d141f4c57d4ab30efd69206dc0a236ed915b2dbc437a9305b860e66e8a3c
fad7200fb72b038fcdd718e5503d6b7490619757cea637feb41caf8de79f7705
SH256 hash:
ba0ca348d3ea5f708743484e33df17e7afda99b72f5ce2e26c5a4c5539776c09
MD5 hash:
32cbfbd5258fb671f6f11e27b1245ee9
SHA1 hash:
289c35ab482dc533c60d70659f8cb66647d40b46
Link:
https://www.unpac.me/results/d635b45c-b08c-4f25-997c-2fcdaa49904f/
SH256 hash:
7c57d141f4c57d4ab30efd69206dc0a236ed915b2dbc437a9305b860e66e8a3c
MD5 hash:
0d3f3677ea8d45a57d725d61c71c172b
SHA1 hash:
be4ca1e7e6a23784efce031f83c0232141cd0718
Link:
https://www.unpac.me/results/d635b45c-b08c-4f25-997c-2fcdaa49904f/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/7c57d141f4c5/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.91
Link:
https://yomi.yoroi.company/submissions/7c57d141f4c57d4ab30efd69206dc0a236ed915b2dbc437a9305b860e66e8a3c

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Create hunting rule
Author:malware-lu
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 7c57d141f4c57d4ab30efd69206dc0a236ed915b2dbc437a9305b860e66e8a3c

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/463309/

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