d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 02:00

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General

Target
d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe
Size 3.4MB
Sample240613-cfe4tstglm
SHA256 d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61
MD5 3f8831d9261238251e36422d413ea006
SHA1 0641d26868a2d0ea0db290792e1d1a532eebf2ae
SHA512 8a92857fd5fe1625ce0ff50f113b3f93e1c1c7966e2ddecddbc28189b8fc5dc2c04115a4f4acf54d52b2eb0111c3255b44b4fbf9f686e1cedede5e5284ce9598
SSDEEP 12288:cubuU8I/2KxfBE4LFr4HV+gDkm3yLEAfGad2qH7a3bsL5SMJ275Oq:cuyJ2ReqE+tm36EKGad2K2wLtJ2dOq
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

Malware Config

Signatures

Detects executables packed with or use KoiVM 1 IoCs

resource	yara_rule
behavioral2/memory/4908-3-0x0000025FAC500000-0x0000025FAC59A000-memory.dmp	INDICATOR_EXE_Packed_KoiVM

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4908 set thread context of 1768	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	85

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1336	1768	WerFault.exe	85

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe
1768	aspnet_wp.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1768	aspnet_wp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4908 wrote to memory of 1776	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	83
PID 4908 wrote to memory of 1776	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	83
PID 4908 wrote to memory of 1776	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	83
PID 4908 wrote to memory of 1776	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	83
PID 4908 wrote to memory of 3456	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	84
PID 4908 wrote to memory of 3456	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	84
PID 4908 wrote to memory of 3456	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	84
PID 4908 wrote to memory of 1768	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	85
PID 4908 wrote to memory of 1768	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	85
PID 4908 wrote to memory of 1768	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	85
PID 4908 wrote to memory of 1768	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	85
PID 4908 wrote to memory of 1768	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	85
PID 4908 wrote to memory of 1768	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	85
PID 4908 wrote to memory of 4032	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	86
PID 4908 wrote to memory of 4032	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	86
PID 4908 wrote to memory of 4032	4908	d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe	86

C:\Users\Admin\AppData\Local\Temp\d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe
"C:\Users\Admin\AppData\Local\Temp\d49838ebe358d49ea93e8a761ee9a0d3a5bf08d1846c58314148f93d4070db61.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Windows\System32\notepad.exe
  "C:\Windows\System32\notepad.exe"
  2⤵
  PID:1776
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:3456
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:1768
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1768 -s 216
    3⤵
    - Program crash
    PID:1336
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  PID:4032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1768 -ip 1768
1⤵
PID:3868

Network

MITRE ATT&CK Matrix

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Downloads

memory/1768-4-0x0000000000400000-0x0000000000443000-memory.dmp

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memory/1768-6-0x0000000001450000-0x000000000179A000-memory.dmp

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memory/1768-7-0x0000000000400000-0x0000000000443000-memory.dmp

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memory/1768-8-0x0000000000400000-0x0000000000443000-memory.dmp

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memory/1768-9-0x0000000000400000-0x0000000000443000-memory.dmp

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memory/4908-0-0x00007FFBE65B3000-0x00007FFBE65B5000-memory.dmp

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memory/4908-1-0x0000025F90DB0000-0x0000025F90DBE000-memory.dmp

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memory/4908-2-0x00007FFBE65B0000-0x00007FFBE7071000-memory.dmp

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memory/4908-3-0x0000025FAC500000-0x0000025FAC59A000-memory.dmp

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memory/4908-5-0x00007FFBE65B0000-0x00007FFBE7071000-memory.dmp

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