arkei | 2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1

Resubmissions

02/02/2022, 12:29

220202-pnzjnaacg710

02/02/2022, 12:25

220202-pll6jsacc510

31/01/2022, 08:45

220131-knzr7sghbn8

Analysis

max time kernel
156s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
submitted
02/02/2022, 12:25

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General

Target
2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe
Size 3.9MB
Sample220202-pll6jsacc5
SHA256 2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1
MD5 4d840d7ff92410dd728a845ab198440d
SHA1 f9d2b75d05c9e744ca5205e036ff3ff59a211b44
SHA512 7e0a3c7fc97cf3ea8503b7605091498f2286a95d77f58accefae903a7adb42e58d50e10f83d54bb8b439c20fd9aa69855575c7d15a3d36e0b69c2864848d5765
MD5 SHA1 SHA512

Score

10^/10

arkei stealer

Malware Config

Signatures

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

Arkei Stealer Payload 2 IoCs

stealer

resource	yara_rule
behavioral2/files/0x00040000000118c2-132.dat	family_arkei
behavioral2/files/0x00040000000118c2-133.dat	family_arkei

Executes dropped EXE 4 IoCs

pid	Process
992	AnyDesk1.exe
3320	AnyDesk2.exe
3740	AnyDesk2.exe
3260	AnyDesk2.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotifyIcon.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotifyIcon.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3848	2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe
3848	2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3848 wrote to memory of 992	3848	2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe	63
PID 3848 wrote to memory of 992	3848	2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe	63
PID 3848 wrote to memory of 992	3848	2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe	63
PID 3848 wrote to memory of 3320	3848	2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe	64
PID 3848 wrote to memory of 3320	3848	2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe	64
PID 3848 wrote to memory of 3320	3848	2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe	64
PID 3320 wrote to memory of 3740	3320	AnyDesk2.exe	65
PID 3320 wrote to memory of 3740	3320	AnyDesk2.exe	65
PID 3320 wrote to memory of 3740	3320	AnyDesk2.exe	65
PID 3320 wrote to memory of 3260	3320	AnyDesk2.exe	66
PID 3320 wrote to memory of 3260	3320	AnyDesk2.exe	66
PID 3320 wrote to memory of 3260	3320	AnyDesk2.exe	66

C:\Users\Admin\AppData\Local\Temp\2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe
"C:\Users\Admin\AppData\Local\Temp\2c35ee480e2ea480624011857326defe537063bb383824013a8f8a0b9182e3b1.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3848
- C:\Users\Admin\AppData\Local\Temp\AnyDesk1.exe
  "C:\Users\Admin\AppData\Local\Temp\AnyDesk1.exe"
  2⤵
  - Executes dropped EXE
  PID:992
- C:\Users\Admin\AppData\Local\Temp\AnyDesk2.exe
  "C:\Users\Admin\AppData\Local\Temp\AnyDesk2.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3320
- - C:\Users\Admin\AppData\Local\Temp\AnyDesk2.exe
    "C:\Users\Admin\AppData\Local\Temp\AnyDesk2.exe" --local-service
    3⤵
    - Executes dropped EXE
    PID:3740
- - C:\Users\Admin\AppData\Local\Temp\AnyDesk2.exe
    "C:\Users\Admin\AppData\Local\Temp\AnyDesk2.exe" --local-control
    3⤵
    - Executes dropped EXE
    PID:3260

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:3032

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3260-146-0x00000000003B0000-0x00000000011B0000-memory.dmp

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memory/3320-141-0x0000000004550000-0x0000000004551000-memory.dmp

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memory/3320-142-0x0000000004390000-0x0000000004391000-memory.dmp

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memory/3320-140-0x0000000004380000-0x0000000004381000-memory.dmp

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memory/3320-138-0x0000000001A40000-0x0000000001A41000-memory.dmp

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memory/3320-137-0x00000000003B0000-0x00000000011B0000-memory.dmp

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memory/3320-150-0x00000000068F0000-0x00000000068F1000-memory.dmp

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memory/3320-135-0x00000000003B0000-0x00000000011B0000-memory.dmp

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memory/3740-145-0x00000000003B0000-0x00000000011B0000-memory.dmp

Download

memory/3740-149-0x00000000003B0000-0x00000000011B0000-memory.dmp

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Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads