arkei | b34170c638c226b607143d245b15d215fb9ba7bcf05db48967b158841509e250

General

Target

7a6beb3d6b5da7f3c02504f7bac4699b.exe
Size

417KB
MD5

7a6beb3d6b5da7f3c02504f7bac4699b
SHA1

0a0b99ca58be23b6f7fb12bf00e648206a5ebb76
SHA256

b34170c638c226b607143d245b15d215fb9ba7bcf05db48967b158841509e250
SHA512

8940b62eca262aff977823fe566542f348d4d2a96c71966677b49ab2bd9a71e32d0e2eea3085df4f9473a9c80c58ff3c3e5aeea2cb57c5403c9cb7f16050a575
SSDEEP

6144:QDXIE3wQQBHndOMlhWmm6zcd6HyflDZDk7K4Ps/dq9fbwwhkiKXmO4E5OLyGhK8W:QTYn1PBmD7Lo7KIslSfMvj94jLNS

Score

10^/10

arkei evasion stealer trojan

Malware Config

Extracted

Family

arkei

C2

5.183.8.234/IRfCMp83ZJ.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	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	7a6beb3d6b5da7f3c02504f7bac4699b.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	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\7a6beb3d6b5da7f3c02504f7bac4699b.exe = "0"	7a6beb3d6b5da7f3c02504f7bac4699b.exe

Nirsoft 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012247-7.dat	Nirsoft

Executes dropped EXE 2 IoCs

pid	Process
2676	AdvancedRun.exe
2984	AdvancedRun.exe

Loads dropped DLL 4 IoCs

pid	Process
1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe
1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe
2676	AdvancedRun.exe
2676	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	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\7a6beb3d6b5da7f3c02504f7bac4699b.exe = "0"	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Real-Time Protection	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Spynet\SubmitSamplesConsent = "0"	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	7a6beb3d6b5da7f3c02504f7bac4699b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1980 set thread context of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2676	AdvancedRun.exe
2676	AdvancedRun.exe
2984	AdvancedRun.exe
2984	AdvancedRun.exe
2824	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2676	AdvancedRun.exe
Token: SeImpersonatePrivilege	2676	AdvancedRun.exe
Token: SeDebugPrivilege	2984	AdvancedRun.exe
Token: SeImpersonatePrivilege	2984	AdvancedRun.exe
Token: SeDebugPrivilege	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Token: SeDebugPrivilege	2824	powershell.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 2676	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	28
PID 1980 wrote to memory of 2676	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	28
PID 1980 wrote to memory of 2676	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	28
PID 1980 wrote to memory of 2676	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	28
PID 2676 wrote to memory of 2984	2676	AdvancedRun.exe	29
PID 2676 wrote to memory of 2984	2676	AdvancedRun.exe	29
PID 2676 wrote to memory of 2984	2676	AdvancedRun.exe	29
PID 2676 wrote to memory of 2984	2676	AdvancedRun.exe	29
PID 1980 wrote to memory of 2824	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	30
PID 1980 wrote to memory of 2824	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	30
PID 1980 wrote to memory of 2824	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	30
PID 1980 wrote to memory of 2824	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	30
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32
PID 1980 wrote to memory of 2936	1980	7a6beb3d6b5da7f3c02504f7bac4699b.exe	32

C:\Users\Admin\AppData\Local\Temp\7a6beb3d6b5da7f3c02504f7bac4699b.exe
"C:\Users\Admin\AppData\Local\Temp\7a6beb3d6b5da7f3c02504f7bac4699b.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:1980
- C:\Users\Admin\AppData\Local\Temp\6e88186a-d0f1-48fb-b5ef-f6ec404b2be2\AdvancedRun.exe
  "C:\Users\Admin\AppData\Local\Temp\6e88186a-d0f1-48fb-b5ef-f6ec404b2be2\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\6e88186a-d0f1-48fb-b5ef-f6ec404b2be2\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:2676
- - C:\Users\Admin\AppData\Local\Temp\6e88186a-d0f1-48fb-b5ef-f6ec404b2be2\AdvancedRun.exe
    "C:\Users\Admin\AppData\Local\Temp\6e88186a-d0f1-48fb-b5ef-f6ec404b2be2\AdvancedRun.exe" /SpecialRun 4101d8 2676
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2984
- 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\7a6beb3d6b5da7f3c02504f7bac4699b.exe" -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2824
- C:\Users\Admin\AppData\Local\Temp\7a6beb3d6b5da7f3c02504f7bac4699b.exe
  "C:\Users\Admin\AppData\Local\Temp\7a6beb3d6b5da7f3c02504f7bac4699b.exe"
  2⤵
  PID:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

3

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\6e88186a-d0f1-48fb-b5ef-f6ec404b2be2\AdvancedRun.exe

Filesize
88KB

MD5
17fc12902f4769af3a9271eb4e2dacce

SHA1
9a4a1581cc3971579574f837e110f3bd6d529dab

SHA256
29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

SHA512
036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

Download Submit
memory/1980-30-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/1980-1-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/1980-2-0x0000000004DA0000-0x0000000004DE0000-memory.dmp

Filesize
256KB

Download
memory/1980-3-0x0000000000510000-0x0000000000578000-memory.dmp

Filesize
416KB

Download
memory/1980-0-0x0000000000E90000-0x0000000000EFE000-memory.dmp

Filesize
440KB

Download
memory/2824-38-0x0000000074EB0000-0x000000007545B000-memory.dmp

Filesize
5.7MB

Download
memory/2824-37-0x00000000026A0000-0x00000000026E0000-memory.dmp

Filesize
256KB

Download
memory/2824-36-0x00000000026A0000-0x00000000026E0000-memory.dmp

Filesize
256KB

Download
memory/2824-35-0x0000000074EB0000-0x000000007545B000-memory.dmp

Filesize
5.7MB

Download
memory/2824-34-0x0000000074EB0000-0x000000007545B000-memory.dmp

Filesize
5.7MB

Download
memory/2936-24-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2936-27-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2936-29-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2936-25-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2936-31-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2936-23-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2936-22-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2936-21-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2936-20-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2936-19-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2936-39-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads