Analysis
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max time kernel
139s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system -
submitted
08-12-2023 02:16
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
KEIBOJS_000000242301_pdf.exe
Resource
win7-20231020-en
windows7-x64
1 signatures
150 seconds
Behavioral task
behavioral2
Sample
KEIBOJS_000000242301_pdf.exe
Resource
win10v2004-20231130-en
windows10-2004-x64
7 signatures
150 seconds
General
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Target
KEIBOJS_000000242301_pdf.exe
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Size
12KB
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MD5
993da48540a2412e8db984b790944f34
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SHA1
f4c946466fd439ebedd8c045909674e76f765f29
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SHA256
b50565bf09e5dacbab8707a725376464874b24e86f38e977c4a45de1049c9c62
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SHA512
8788077de9a8fd932e11bb11581ee7b1ee3040b930408f641449f29d271ca1b1769497f1c07148873c1ab3e2eeda652fcafe26eef8f9b2f41c672206b216f1f9
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SSDEEP
192:fdQ8+pGrmjALBBhaqFYw55bGTzK5jX92PxcZ:fO8YKmjSxFv5JQzKJX9r
Malware Config
Extracted
Family
agenttesla
Credentials
Protocol: smtp- Host:
mail.jaazgroup.com - Port:
587 - Username:
[email protected] - Password:
cincin/123 - Email To:
[email protected]
Signatures
-
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3936660601-1848837011-2142350499-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Xteqxrqlntx = "C:\\Users\\Admin\\AppData\\Roaming\\Xteqxrqlntx.exe" KEIBOJS_000000242301_pdf.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1484 set thread context of 2476 1484 KEIBOJS_000000242301_pdf.exe 101 -
Program crash 1 IoCs
pid pid_target Process procid_target 4448 2476 WerFault.exe 101 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2476 aspnet_compiler.exe 2476 aspnet_compiler.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1484 KEIBOJS_000000242301_pdf.exe Token: SeDebugPrivilege 2476 aspnet_compiler.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1484 wrote to memory of 2476 1484 KEIBOJS_000000242301_pdf.exe 101 PID 1484 wrote to memory of 2476 1484 KEIBOJS_000000242301_pdf.exe 101 PID 1484 wrote to memory of 2476 1484 KEIBOJS_000000242301_pdf.exe 101 PID 1484 wrote to memory of 2476 1484 KEIBOJS_000000242301_pdf.exe 101 PID 1484 wrote to memory of 2476 1484 KEIBOJS_000000242301_pdf.exe 101 PID 1484 wrote to memory of 2476 1484 KEIBOJS_000000242301_pdf.exe 101 PID 1484 wrote to memory of 2476 1484 KEIBOJS_000000242301_pdf.exe 101 PID 1484 wrote to memory of 2476 1484 KEIBOJS_000000242301_pdf.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\KEIBOJS_000000242301_pdf.exe"C:\Users\Admin\AppData\Local\Temp\KEIBOJS_000000242301_pdf.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1484 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2476 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2476 -s 13803⤵
- Program crash
PID:4448
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2476 -ip 24761⤵PID:1008