MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cf635bc1b437c5c12aac8dd5dc92c4a3f30647f8b1f49633b787c92e3cc94047. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cf635bc1b437c5c12aac8dd5dc92c4a3f30647f8b1f49633b787c92e3cc94047
SHA3-384 hash: a19f7af6726fd522ce1f9694d95c4aa83c867fb1710dfc122c8e75779c2c665729c57d04a4f6e4869ca3c006dbb1e923
SHA1 hash: d55d6819f3be2bbee0710fe5cb17f6a42c464c59
MD5 hash: 66c6c9672ffad343944b0f8b6b4e3dcd
humanhash: pluto-winter-oxygen-charlie
File name:PO#23-0196 Soft Shell Nylon.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:710'144 bytes
First seen:2023-11-29 11:03:53 UTC
Last seen:2023-11-29 11:04:13 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 12288:1h6pQmbCp92iNWgkjYa9U5NKl6Bngsvjzzpb6LDurVFk1ggb:1l1TkjtU50mbzF+/8q
Threatray 2'741 similar samples on MalwareBazaar
TLSH T18DE4128139D99E27C66F25F828BA640113F7849A7D95F7CA6DC1F0CA5AE1FE0030169F
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter cocaman
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
316
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
PO#23-0196 Soft Shell Nylon.exe
Verdict:
Malicious activity
Analysis date:
2023-11-29 11:06:17 UTC
Tags:
agenttesla stealer
Link:
https://app.any.run/tasks/35065886-6600-4094-abc9-ac32ef0af2fe

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/461175/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a file
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/cf635bc1b437c5c12aac8dd5dc92c4a3f30647f8b1f49633b787c92e3cc94047
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b217fb05-b8cd-4880-9f87-57d89d6ef5fc
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1349836
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Found 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 dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
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 schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1349836 Sample: PO#23-0196_Soft_Shell_Nylon.exe Startdate: 29/11/2023 Architecture: WINDOWS Score: 100 40 mail.iaa-airferight.com 2->40 44 Snort IDS alert for network traffic 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 10 other signatures 2->50 8 PO#23-0196_Soft_Shell_Nylon.exe 7 2->8         started        12 oHsLBfYA.exe 5 2->12         started        signatures3 process4 file5 36 C:\Users\user\AppData\Roaming\oHsLBfYA.exe, PE32 8->36 dropped 38 C:\Users\user\AppData\Local\...\tmpB143.tmp, XML 8->38 dropped 52 Uses schtasks.exe or at.exe to add and modify task schedules 8->52 54 Writes to foreign memory regions 8->54 56 Adds a directory exclusion to Windows Defender 8->56 58 Injects a PE file into a foreign processes 8->58 14 RegSvcs.exe 2 8->14         started        18 RegSvcs.exe 8->18         started        20 powershell.exe 23 8->20         started        26 2 other processes 8->26 60 Antivirus detection for dropped file 12->60 62 Multi AV Scanner detection for dropped file 12->62 64 Machine Learning detection for dropped file 12->64 22 RegSvcs.exe 12->22         started        24 schtasks.exe 12->24         started        signatures6 process7 dnsIp8 42 mail.iaa-airferight.com 84.54.23.97, 25, 49709, 49710 DEDIPATH-LLCUS Germany 14->42 66 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->66 28 conhost.exe 20->28         started        68 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 22->68 70 Tries to steal Mail credentials (via file / registry access) 22->70 72 Tries to harvest and steal browser information (history, passwords, etc) 22->72 30 conhost.exe 24->30         started        32 conhost.exe 26->32         started        34 conhost.exe 26->34         started        signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/cf635bc1b437c5c12aac8dd5dc92c4a3f30647f8b1f49633b787c92e3cc94047/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-11-28 18:16:29 UTC
File Type:
PE (.Net Exe)
Extracted files:
27
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z5rvxqnug7c4ckvmrxk5zeweupzqmr7ywh2jmm5xq7es4pgjibdq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
Similar samples:
15754fcbc9378bee0068731bd49ccf0d461325d381f648c67d145a3dc847ac0e
AgentTesla
aafed148376c7e9484eedc5d71e361bdd7f8b2228d4f713eb68fbda4ce376f2e
AgentTesla
b53efc7412828b786421a8af18b3210e89df1534800adff5d5ec522ee5ab793b
AgentTesla
c5c77e51dc1af0c4af0a3b0d3fed6fcdd7903017aee805bf5d64764b1472ca5b
AgentTesla
+ 2'731 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/231129-m59d3sfg53/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
AgentTesla
Unpacked files
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/4b591e89-a787-46d2-b9a8-71fdd19a6152/
SH256 hash:
2a0290a662e89a81ed2d9c73e54a0aeba209fc36617f134cf0aaa74690db47db
MD5 hash:
4820945deb84d6bd26460e8a6ba0c622
SHA1 hash:
c519540ad21594fa45fcc2e6e15cfbea8b3449b9
Link:
https://www.unpac.me/results/4b591e89-a787-46d2-b9a8-71fdd19a6152/
SH256 hash:
bb531c369b8870b7e4ffb6618e6cc11cc63f4545f655b1204a162aa03e514d47
MD5 hash:
8becb297794844862657da1e4ce05247
SHA1 hash:
9d4f16c749e6487f8c4ae93625da92c8f8cc6e62
Link:
https://www.unpac.me/results/4b591e89-a787-46d2-b9a8-71fdd19a6152/
SH256 hash:
bafe6d176d0181707a4d60fc9b0046a57259c6ab8def0e18c2436366c3226eae
MD5 hash:
0ddb2ef6bf53ca68ef12e8f4edbcc6d2
SHA1 hash:
40c262dbf694c3d66d09de2ecb75acc746af9e3b
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
Link:
https://www.unpac.me/results/4b591e89-a787-46d2-b9a8-71fdd19a6152/
Parent samples :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 hash:
cf635bc1b437c5c12aac8dd5dc92c4a3f30647f8b1f49633b787c92e3cc94047
MD5 hash:
66c6c9672ffad343944b0f8b6b4e3dcd
SHA1 hash:
d55d6819f3be2bbee0710fe5cb17f6a42c464c59
Link:
https://www.unpac.me/results/4b591e89-a787-46d2-b9a8-71fdd19a6152/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cf635bc1b437/report/overview.html
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/cf635bc1b437c5c12aac8dd5dc92c4a3f30647f8b1f49633b787c92e3cc94047

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
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

AgentTesla

tar 5361b39e6cba842c7bde10d9c1984f61ac3e32d3118a22d6cd82f6ecb43207a1

AgentTesla

Executable exe cf635bc1b437c5c12aac8dd5dc92c4a3f30647f8b1f49633b787c92e3cc94047

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 5361b39e6cba842c7bde10d9c1984f61ac3e32d3118a22d6cd82f6ecb43207a1
  
Dropped by
SHA256 17966af1f02c764647a59c376079843bf4313bcd8580583a0a285ebaa53f553c
Cape
Cape
https://www.capesandbox.com/analysis/461175/
  
Dropped by
MD5 95902a3682c87f24f301723be8b5114f
  
Dropped by
MD5 d4e51ee4820496cb94e7954802b3d3bc

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