MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b78575b143ad3445c37789bbb9fcfc5d1abf7a788eeb09dd6cee6df3c8984af. 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


AgentTesla


Vendor detections: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b78575b143ad3445c37789bbb9fcfc5d1abf7a788eeb09dd6cee6df3c8984af
SHA3-384 hash: eed838ea1c345f1899581bf7623381c2ed9fc76983039f7ab63261918cb47bee3bfba176fba7ebaf927ba8680bd28179
SHA1 hash: 608592e5241179dee88689a2b60b562c3686ac4f
MD5 hash: 79f02aae4b266ed15cac2a9f159f1948
humanhash: massachusetts-oranges-idaho-salami
File name:MASTER CONTACT DETAILS.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:850'432 bytes
First seen:2021-06-08 05:26:36 UTC
Last seen:2021-06-08 05:34:56 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 12288:942kl8+drLdNNfSqFTLnspPOfavQNpn7uL:9Y8+drLBfSC3JgQT7w
Threatray 5'679 similar samples on MalwareBazaar
TLSH EF056B4065A4CB91E2F5A3F58E10D0F087A56E2965ADE18F1CE9BCEB777DB438D01A03
Reporter cocaman
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
100
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
MASTER CONTACT DETAILS.exe
Verdict:
Malicious activity
Analysis date:
2021-06-08 00:50:18 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/732a4865-ec8c-420d-b3c4-dd63e654d7ca

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/165120/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.15082.6135.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Enabling autorun by creating a file
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.
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/798469
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 430865 Sample: MASTER CONTACT DETAILS.exe Startdate: 08/06/2021 Architecture: WINDOWS Score: 100 29 Found malware configuration 2->29 31 Multi AV Scanner detection for dropped file 2->31 33 Multi AV Scanner detection for submitted file 2->33 35 11 other signatures 2->35 7 MASTER CONTACT DETAILS.exe 6 2->7         started        process3 file4 23 C:\Users\user\AppData\Roaming\goQBzWbJ.exe, PE32 7->23 dropped 25 C:\Users\user\AppData\Local\...\tmpEA3D.tmp, XML 7->25 dropped 27 C:\Users\...\MASTER CONTACT DETAILS.exe.log, ASCII 7->27 dropped 37 Injects a PE file into a foreign processes 7->37 11 MASTER CONTACT DETAILS.exe 2 7->11         started        13 schtasks.exe 1 7->13         started        15 MASTER CONTACT DETAILS.exe 7->15         started        17 2 other processes 7->17 signatures5 process6 process7 19 dw20.exe 22 6 11->19         started        21 conhost.exe 13->21         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b78575b143ad3445c37789bbb9fcfc5d1abf7a788eeb09dd6cee6df3c8984af/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-06-08 01:15:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
57
AV detection:
14 of 29 (48.28%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jn4fowyuhljuixbxpcn3xh6pyxi2x55hrdxlbhowz3tn6pejqsxq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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66299f1d16eab2cca6ebe65ac3239ab8fb27ea535d2fa6e2f472554c311d9f07
AgentTesla
6c655d9a02c5fce292ffe757bc255eb848327639e5d77829741bf29d477485f9
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83a086432a8a3d8b65e2a0a4d5d139553cfaef97856424fccb4b11a813518ae1
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a05b237bd950b290bde604ee1eb0682268195ce28a92dfc1b17c5085583dd107
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a5b4a1aa53134e93a392b7b90cc7c5d4a939d4f61bdf330de08d49fa1b4356ed
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a8c033991df229ed08f99e6a4a931ab0e53484b7ab817ce2edbe6473dcb7b160
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b2b6eff8a6c60704b212b98e6eb03be8bd26e1dc3bd8b6f28774bd6a52badb6d
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b490bfd0e2a245e5ba7a9d4af2f95a36c9db109856c1187b16a44dd6fe172c88
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d2b40aec8598e0b2056bb553f0aeb0b57002a0840bfb92f90d668beaddd94a39
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efc33e49a1f2bb8a2caf20a3609c44170c3739c90c1e2f4f236961e13279a3b3
AgentTesla
+ 5'669 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/210608-ee8lc8v3a2/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
AgentTesla Payload
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot1765743101:AAFjAIqoiFu5pUMytacYpCrgIdiSe6mbRkM/sendDocument
Unpacked files
SH256 hash:
3a072ef8dca19dcd5864e1dc78e493849cf8ff5ab538a8d3765ff045246de40a
MD5 hash:
7b21c63eb7a816f93fdcdc2b394b2cc5
SHA1 hash:
b64b5bfc83d7f122448aa1198f6610d1f09617fa
Link:
https://www.unpac.me/results/59d528f8-324c-4750-8bd3-ca8076745e22/
SH256 hash:
bf3e9715efa6ffc8e93deb347cbc87f948922089c42e6191732c034fc11f8511
MD5 hash:
ef9b97a07b3eb97dd34059c35b9ec52f
SHA1 hash:
87220a7ec801b0c99d183fb37b4c0f548a774b6a
Link:
https://www.unpac.me/results/59d528f8-324c-4750-8bd3-ca8076745e22/
SH256 hash:
5bede9eedf6ae6df5a9d587c116c9583b31474c159c2b53486b000093cb3fde6
MD5 hash:
072eeac61b35d3f09edee4ff4f80f52d
SHA1 hash:
696fd9905a47e526470c2e234fef32f1ec1b74ad
Link:
https://www.unpac.me/results/59d528f8-324c-4750-8bd3-ca8076745e22/
SH256 hash:
4b78575b143ad3445c37789bbb9fcfc5d1abf7a788eeb09dd6cee6df3c8984af
MD5 hash:
79f02aae4b266ed15cac2a9f159f1948
SHA1 hash:
608592e5241179dee88689a2b60b562c3686ac4f
Link:
https://www.unpac.me/results/59d528f8-324c-4750-8bd3-ca8076745e22/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4b78575b143ad3445c37789bbb9fcfc5d1abf7a788eeb09dd6cee6df3c8984af

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

AgentTesla

rar 9b535df4412e9df0e5e9b1a76f64a2f977ec3ab8a59abcc77dbd95e562012992

AgentTesla

Executable exe 4b78575b143ad3445c37789bbb9fcfc5d1abf7a788eeb09dd6cee6df3c8984af

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 9b535df4412e9df0e5e9b1a76f64a2f977ec3ab8a59abcc77dbd95e562012992
Cape
Cape
https://www.capesandbox.com/analysis/165120/

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