arkei | ad2c6c8d68058c316b1f3c343b59c0c14526f4a7c84ed771b2d90f590fc3c535

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
16/03/2024, 14:56

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General

Target
ce5706f1a1dd859a8233397c2490680b.exe
Size 416KB
Sample240316-sbb5dafc58
SHA256 ad2c6c8d68058c316b1f3c343b59c0c14526f4a7c84ed771b2d90f590fc3c535
MD5 ce5706f1a1dd859a8233397c2490680b
SHA1 9a3775d1c673313a4814abe25049efb03a3e674e
SHA512 35b6aec7f2821baf073cc05d0e18173961757db0d458f7ed44979abbfbd040b8ecc6418e97f6bb23006fadd368191c34be0f1f5877a87b46f3c292523be00b7a
SSDEEP 6144:P0XIE3wQQBHn8nd2r1XGUtZXdRloUfk+S+r2I1Fyjbl66A93LnYDttxU7Uu6wB8B:P6Yn8nd2r1XXtCXtvldA93LYzxOd6L
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

arkei evasion stealer trojan

Malware Config

Extracted

Family

arkei

141.95.23.6/kESK2FZqwB.php

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	ce5706f1a1dd859a8233397c2490680b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	ce5706f1a1dd859a8233397c2490680b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	ce5706f1a1dd859a8233397c2490680b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	ce5706f1a1dd859a8233397c2490680b.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths	ce5706f1a1dd859a8233397c2490680b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\ce5706f1a1dd859a8233397c2490680b.exe = "0"	ce5706f1a1dd859a8233397c2490680b.exe

Nirsoft 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000015315-7.dat	Nirsoft

Executes dropped EXE 2 IoCs

pid	Process
2516	AdvancedRun.exe
2512	AdvancedRun.exe

Loads dropped DLL 4 IoCs

pid	Process
2204	ce5706f1a1dd859a8233397c2490680b.exe
2204	ce5706f1a1dd859a8233397c2490680b.exe
2516	AdvancedRun.exe
2516	AdvancedRun.exe

Windows security modification 2 TTPs 8 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths	ce5706f1a1dd859a8233397c2490680b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions	ce5706f1a1dd859a8233397c2490680b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\ce5706f1a1dd859a8233397c2490680b.exe = "0"	ce5706f1a1dd859a8233397c2490680b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Real-Time Protection	ce5706f1a1dd859a8233397c2490680b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	ce5706f1a1dd859a8233397c2490680b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Spynet\SubmitSamplesConsent = "0"	ce5706f1a1dd859a8233397c2490680b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	ce5706f1a1dd859a8233397c2490680b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	ce5706f1a1dd859a8233397c2490680b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2204 set thread context of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2420	2432	WerFault.exe	32

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2516	AdvancedRun.exe
2516	AdvancedRun.exe
2512	AdvancedRun.exe
2512	AdvancedRun.exe
2636	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	AdvancedRun.exe
Token: SeImpersonatePrivilege	2516	AdvancedRun.exe
Token: SeDebugPrivilege	2512	AdvancedRun.exe
Token: SeImpersonatePrivilege	2512	AdvancedRun.exe
Token: SeDebugPrivilege	2204	ce5706f1a1dd859a8233397c2490680b.exe
Token: SeDebugPrivilege	2636	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2516	2204	ce5706f1a1dd859a8233397c2490680b.exe	28
PID 2204 wrote to memory of 2516	2204	ce5706f1a1dd859a8233397c2490680b.exe	28
PID 2204 wrote to memory of 2516	2204	ce5706f1a1dd859a8233397c2490680b.exe	28
PID 2204 wrote to memory of 2516	2204	ce5706f1a1dd859a8233397c2490680b.exe	28
PID 2516 wrote to memory of 2512	2516	AdvancedRun.exe	29
PID 2516 wrote to memory of 2512	2516	AdvancedRun.exe	29
PID 2516 wrote to memory of 2512	2516	AdvancedRun.exe	29
PID 2516 wrote to memory of 2512	2516	AdvancedRun.exe	29
PID 2204 wrote to memory of 2636	2204	ce5706f1a1dd859a8233397c2490680b.exe	30
PID 2204 wrote to memory of 2636	2204	ce5706f1a1dd859a8233397c2490680b.exe	30
PID 2204 wrote to memory of 2636	2204	ce5706f1a1dd859a8233397c2490680b.exe	30
PID 2204 wrote to memory of 2636	2204	ce5706f1a1dd859a8233397c2490680b.exe	30
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2204 wrote to memory of 2432	2204	ce5706f1a1dd859a8233397c2490680b.exe	32
PID 2432 wrote to memory of 2420	2432	ce5706f1a1dd859a8233397c2490680b.exe	33
PID 2432 wrote to memory of 2420	2432	ce5706f1a1dd859a8233397c2490680b.exe	33
PID 2432 wrote to memory of 2420	2432	ce5706f1a1dd859a8233397c2490680b.exe	33
PID 2432 wrote to memory of 2420	2432	ce5706f1a1dd859a8233397c2490680b.exe	33

C:\Users\Admin\AppData\Local\Temp\ce5706f1a1dd859a8233397c2490680b.exe
"C:\Users\Admin\AppData\Local\Temp\ce5706f1a1dd859a8233397c2490680b.exe"
1⤵
- Modifies Windows Defender Real-time Protection settings
- Windows security bypass
- Loads dropped DLL
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Users\Admin\AppData\Local\Temp\84870415-fc5c-41af-a856-d4ffa3dea4d9\AdvancedRun.exe
  "C:\Users\Admin\AppData\Local\Temp\84870415-fc5c-41af-a856-d4ffa3dea4d9\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\84870415-fc5c-41af-a856-d4ffa3dea4d9\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Users\Admin\AppData\Local\Temp\84870415-fc5c-41af-a856-d4ffa3dea4d9\AdvancedRun.exe
    "C:\Users\Admin\AppData\Local\Temp\84870415-fc5c-41af-a856-d4ffa3dea4d9\AdvancedRun.exe" /SpecialRun 4101d8 2516
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2512
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\ce5706f1a1dd859a8233397c2490680b.exe" -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2636
- C:\Users\Admin\AppData\Local\Temp\ce5706f1a1dd859a8233397c2490680b.exe
  "C:\Users\Admin\AppData\Local\Temp\ce5706f1a1dd859a8233397c2490680b.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2432
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 44
    3⤵
    - Program crash
    PID:2420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

AdvancedRun.exe

Path \Users\Admin\AppData\Local\Temp\84870415-fc5c-41af-a856-d4ffa3dea4d9\AdvancedRun.exe
Size 88KB
SHA256 29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b
MD5 17fc12902f4769af3a9271eb4e2dacce
SHA1 9a4a1581cc3971579574f837e110f3bd6d529dab
SHA512 036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a
SSDEEP 1536:JW3osrWjET3tYIrrRepnbZ6ObGk2nLY2jR+utQUN+WXim:HjjET9nX0pnUOik2nXjR+utQK+g3
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2204-0-0x0000000001310000-0x000000000137E000-memory.dmp

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memory/2204-1-0x0000000074870000-0x0000000074F5E000-memory.dmp

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memory/2204-2-0x0000000000990000-0x00000000009D0000-memory.dmp

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memory/2204-3-0x0000000000C80000-0x0000000000CE8000-memory.dmp

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memory/2204-34-0x0000000074870000-0x0000000074F5E000-memory.dmp

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memory/2432-27-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/2432-19-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/2432-23-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/2432-25-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/2432-20-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/2432-29-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

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memory/2432-31-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/2432-21-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/2432-33-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/2636-37-0x00000000736B0000-0x0000000073C5B000-memory.dmp

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memory/2636-38-0x00000000736B0000-0x0000000073C5B000-memory.dmp

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memory/2636-39-0x00000000025D0000-0x0000000002610000-memory.dmp

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memory/2636-40-0x00000000025D0000-0x0000000002610000-memory.dmp

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memory/2636-41-0x00000000025D0000-0x0000000002610000-memory.dmp

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memory/2636-42-0x00000000736B0000-0x0000000073C5B000-memory.dmp

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