arkei | b34170c638c226b607143d245b15d215fb9ba7bcf05db48967b158841509e250

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2024 13:53

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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

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

Processes:

7a6beb3d6b5da7f3c02504f7bac4699b.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	7a6beb3d6b5da7f3c02504f7bac4699b.exe

Turns off Windows Defender SpyNet reporting 2 TTPs
evasion

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

7a6beb3d6b5da7f3c02504f7bac4699b.exe

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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\41975551-e827-42e0-93ed-00e02d22bc4d\AdvancedRun.exe	Nirsoft

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

7a6beb3d6b5da7f3c02504f7bac4699b.exeAdvancedRun.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	AdvancedRun.exe

Executes dropped EXE 2 IoCs

Processes:

AdvancedRun.exeAdvancedRun.exe

pid process

3756 AdvancedRun.exe
4780 AdvancedRun.exe

Windows security modification 2 TTPs 10 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

7a6beb3d6b5da7f3c02504f7bac4699b.exe

description	ioc	process
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
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
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\Spynet	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Spynet\SpyNetReporting = "0"	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Spynet\SubmitSamplesConsent = "0"	7a6beb3d6b5da7f3c02504f7bac4699b.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

7a6beb3d6b5da7f3c02504f7bac4699b.exe

description pid process target process

PID 1604 set thread context of 3264 1604 7a6beb3d6b5da7f3c02504f7bac4699b.exe 7a6beb3d6b5da7f3c02504f7bac4699b.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 1604 set thread context of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

AdvancedRun.exeAdvancedRun.exepowershell.exe

pid	process
3756	AdvancedRun.exe
3756	AdvancedRun.exe
3756	AdvancedRun.exe
3756	AdvancedRun.exe
4780	AdvancedRun.exe
4780	AdvancedRun.exe
4780	AdvancedRun.exe
4780	AdvancedRun.exe
1628	powershell.exe
1628	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

AdvancedRun.exeAdvancedRun.exe7a6beb3d6b5da7f3c02504f7bac4699b.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	3756	AdvancedRun.exe
Token: SeImpersonatePrivilege	3756	AdvancedRun.exe
Token: SeDebugPrivilege	4780	AdvancedRun.exe
Token: SeImpersonatePrivilege	4780	AdvancedRun.exe
Token: SeDebugPrivilege	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe
Token: SeDebugPrivilege	1628	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

7a6beb3d6b5da7f3c02504f7bac4699b.exeAdvancedRun.exe

description	pid	process	target process
PID 1604 wrote to memory of 3756	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	AdvancedRun.exe
PID 1604 wrote to memory of 3756	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	AdvancedRun.exe
PID 1604 wrote to memory of 3756	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	AdvancedRun.exe
PID 3756 wrote to memory of 4780	3756	AdvancedRun.exe	AdvancedRun.exe
PID 3756 wrote to memory of 4780	3756	AdvancedRun.exe	AdvancedRun.exe
PID 3756 wrote to memory of 4780	3756	AdvancedRun.exe	AdvancedRun.exe
PID 1604 wrote to memory of 1628	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	powershell.exe
PID 1604 wrote to memory of 1628	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	powershell.exe
PID 1604 wrote to memory of 1628	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	powershell.exe
PID 1604 wrote to memory of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe
PID 1604 wrote to memory of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe
PID 1604 wrote to memory of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe
PID 1604 wrote to memory of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe
PID 1604 wrote to memory of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe
PID 1604 wrote to memory of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe
PID 1604 wrote to memory of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe
PID 1604 wrote to memory of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe
PID 1604 wrote to memory of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe
PID 1604 wrote to memory of 3264	1604	7a6beb3d6b5da7f3c02504f7bac4699b.exe	7a6beb3d6b5da7f3c02504f7bac4699b.exe

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
- Checks computer location settings
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1604

C:\Users\Admin\AppData\Local\Temp\41975551-e827-42e0-93ed-00e02d22bc4d\AdvancedRun.exe
"C:\Users\Admin\AppData\Local\Temp\41975551-e827-42e0-93ed-00e02d22bc4d\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\41975551-e827-42e0-93ed-00e02d22bc4d\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3756

C:\Users\Admin\AppData\Local\Temp\41975551-e827-42e0-93ed-00e02d22bc4d\AdvancedRun.exe
"C:\Users\Admin\AppData\Local\Temp\41975551-e827-42e0-93ed-00e02d22bc4d\AdvancedRun.exe" /SpecialRun 4101d8 3756
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4780

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:1628

C:\Users\Admin\AppData\Local\Temp\7a6beb3d6b5da7f3c02504f7bac4699b.exe
"C:\Users\Admin\AppData\Local\Temp\7a6beb3d6b5da7f3c02504f7bac4699b.exe"
2⤵
PID:3264

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\41975551-e827-42e0-93ed-00e02d22bc4d\AdvancedRun.exe

Filesize
88KB

MD5
17fc12902f4769af3a9271eb4e2dacce

SHA1
9a4a1581cc3971579574f837e110f3bd6d529dab

SHA256
29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

SHA512
036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b4ksuptn.cxf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1604-7-0x00000000059E0000-0x0000000005A56000-memory.dmp

Filesize
472KB

Download
memory/1604-2-0x0000000005DA0000-0x0000000006344000-memory.dmp

Filesize
5.6MB

Download
memory/1604-4-0x00000000059D0000-0x00000000059E0000-memory.dmp

Filesize
64KB

Download
memory/1604-8-0x00000000058F0000-0x0000000005958000-memory.dmp

Filesize
416KB

Download
memory/1604-3-0x0000000005720000-0x00000000057B2000-memory.dmp

Filesize
584KB

Download
memory/1604-6-0x0000000005A80000-0x0000000005B1C000-memory.dmp

Filesize
624KB

Download
memory/1604-5-0x00000000058E0000-0x00000000058EA000-memory.dmp

Filesize
40KB

Download
memory/1604-9-0x0000000005A60000-0x0000000005A7E000-memory.dmp

Filesize
120KB

Download
memory/1604-0-0x0000000000CE0000-0x0000000000D4E000-memory.dmp

Filesize
440KB

Download
memory/1604-1-0x0000000074E00000-0x00000000755B0000-memory.dmp

Filesize
7.7MB

Download
memory/1604-32-0x0000000074E00000-0x00000000755B0000-memory.dmp

Filesize
7.7MB

Download
memory/1628-52-0x00000000716C0000-0x000000007170C000-memory.dmp

Filesize
304KB

Download
memory/1628-65-0x0000000006E90000-0x0000000006F33000-memory.dmp

Filesize
652KB

Download
memory/1628-35-0x0000000004C50000-0x0000000004C72000-memory.dmp

Filesize
136KB

Download
memory/1628-77-0x0000000074E00000-0x00000000755B0000-memory.dmp

Filesize
7.7MB

Download
memory/1628-73-0x0000000007300000-0x000000000731A000-memory.dmp

Filesize
104KB

Download
memory/1628-38-0x0000000004F60000-0x0000000004FC6000-memory.dmp

Filesize
408KB

Download
memory/1628-47-0x0000000005790000-0x0000000005AE4000-memory.dmp

Filesize
3.3MB

Download
memory/1628-36-0x0000000004EF0000-0x0000000004F56000-memory.dmp

Filesize
408KB

Download
memory/1628-33-0x0000000004990000-0x00000000049A0000-memory.dmp

Filesize
64KB

Download
memory/1628-48-0x0000000005C90000-0x0000000005CAE000-memory.dmp

Filesize
120KB

Download
memory/1628-25-0x00000000022E0000-0x0000000002316000-memory.dmp

Filesize
216KB

Download
memory/1628-29-0x0000000004990000-0x00000000049A0000-memory.dmp

Filesize
64KB

Download
memory/1628-27-0x0000000074E00000-0x00000000755B0000-memory.dmp

Filesize
7.7MB

Download
memory/1628-49-0x0000000005CC0000-0x0000000005D0C000-memory.dmp

Filesize
304KB

Download
memory/1628-64-0x0000000004990000-0x00000000049A0000-memory.dmp

Filesize
64KB

Download
memory/1628-31-0x0000000004FD0000-0x00000000055F8000-memory.dmp

Filesize
6.2MB

Download
memory/1628-63-0x0000000004990000-0x00000000049A0000-memory.dmp

Filesize
64KB

Download
memory/1628-62-0x0000000006E70000-0x0000000006E8E000-memory.dmp

Filesize
120KB

Download
memory/1628-67-0x0000000006FC0000-0x0000000006FDA000-memory.dmp

Filesize
104KB

Download
memory/1628-66-0x0000000007600000-0x0000000007C7A000-memory.dmp

Filesize
6.5MB

Download
memory/1628-74-0x00000000072E0000-0x00000000072E8000-memory.dmp

Filesize
32KB

Download
memory/1628-68-0x0000000007030000-0x000000000703A000-memory.dmp

Filesize
40KB

Download
memory/1628-51-0x0000000006E30000-0x0000000006E62000-memory.dmp

Filesize
200KB

Download
memory/1628-50-0x000000007F840000-0x000000007F850000-memory.dmp

Filesize
64KB

Download
memory/1628-69-0x0000000007240000-0x00000000072D6000-memory.dmp

Filesize
600KB

Download
memory/1628-70-0x00000000071C0000-0x00000000071D1000-memory.dmp

Filesize
68KB

Download
memory/1628-71-0x00000000071F0000-0x00000000071FE000-memory.dmp

Filesize
56KB

Download
memory/1628-72-0x0000000007200000-0x0000000007214000-memory.dmp

Filesize
80KB

Download
memory/3264-24-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3264-30-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3264-34-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3264-78-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download