arkei | 34ba222ef969f09ecca5506cbada7c346469a96a6af0cdd21146d4435196deda

Analysis

max time kernel
144s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
01-06-2022 16:06

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General

Target

ghjkl.exe
Size

40KB
MD5

0a7b32e75a01764ef5389a1d9e72ed63
SHA1

871366f3573c3349e9dc7b67fef1ef575815c154
SHA256

34ba222ef969f09ecca5506cbada7c346469a96a6af0cdd21146d4435196deda
SHA512

f19a7d56a825b59d2841a4f10db940458d3255239e15bb9bbe1376e1fc47d4c97aef09d4e7ecd5a3a35fca44ec92edf60edd4a07ef1845d679c3bd4fc8fe43ba

Score

10^/10

arkei default stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
4832	Iioozcrscrdqdprjojgormars2.exe
4472	Iioozcrscrdqdprjojgormars2.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	ghjkl.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Iioozcrscrdqdprjojgormars2.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2584 set thread context of 1892	2584	ghjkl.exe	85
PID 4832 set thread context of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90

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

System Information Discovery
T1082

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
4340	timeout.exe
4620	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2584	ghjkl.exe
2584	ghjkl.exe
4832	Iioozcrscrdqdprjojgormars2.exe
4832	Iioozcrscrdqdprjojgormars2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2584	ghjkl.exe
Token: SeDebugPrivilege	4832	Iioozcrscrdqdprjojgormars2.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2584 wrote to memory of 4504	2584	ghjkl.exe	81
PID 2584 wrote to memory of 4504	2584	ghjkl.exe	81
PID 2584 wrote to memory of 4504	2584	ghjkl.exe	81
PID 4504 wrote to memory of 4620	4504	cmd.exe	83
PID 4504 wrote to memory of 4620	4504	cmd.exe	83
PID 4504 wrote to memory of 4620	4504	cmd.exe	83
PID 2584 wrote to memory of 4832	2584	ghjkl.exe	84
PID 2584 wrote to memory of 4832	2584	ghjkl.exe	84
PID 2584 wrote to memory of 4832	2584	ghjkl.exe	84
PID 2584 wrote to memory of 1892	2584	ghjkl.exe	85
PID 2584 wrote to memory of 1892	2584	ghjkl.exe	85
PID 2584 wrote to memory of 1892	2584	ghjkl.exe	85
PID 2584 wrote to memory of 1892	2584	ghjkl.exe	85
PID 2584 wrote to memory of 1892	2584	ghjkl.exe	85
PID 2584 wrote to memory of 1892	2584	ghjkl.exe	85
PID 2584 wrote to memory of 1892	2584	ghjkl.exe	85
PID 2584 wrote to memory of 1892	2584	ghjkl.exe	85
PID 2584 wrote to memory of 1892	2584	ghjkl.exe	85
PID 4832 wrote to memory of 4432	4832	Iioozcrscrdqdprjojgormars2.exe	86
PID 4832 wrote to memory of 4432	4832	Iioozcrscrdqdprjojgormars2.exe	86
PID 4832 wrote to memory of 4432	4832	Iioozcrscrdqdprjojgormars2.exe	86
PID 4432 wrote to memory of 4340	4432	cmd.exe	88
PID 4432 wrote to memory of 4340	4432	cmd.exe	88
PID 4432 wrote to memory of 4340	4432	cmd.exe	88
PID 4832 wrote to memory of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90
PID 4832 wrote to memory of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90
PID 4832 wrote to memory of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90
PID 4832 wrote to memory of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90
PID 4832 wrote to memory of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90
PID 4832 wrote to memory of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90
PID 4832 wrote to memory of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90
PID 4832 wrote to memory of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90
PID 4832 wrote to memory of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90
PID 4832 wrote to memory of 4472	4832	Iioozcrscrdqdprjojgormars2.exe	90

C:\Users\Admin\AppData\Local\Temp\ghjkl.exe
"C:\Users\Admin\AppData\Local\Temp\ghjkl.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2584
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 20
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4504
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 20
    3⤵
    - Delays execution with timeout.exe
    PID:4620
- C:\Users\Admin\AppData\Local\Temp\Iioozcrscrdqdprjojgormars2.exe
  "C:\Users\Admin\AppData\Local\Temp\Iioozcrscrdqdprjojgormars2.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4832
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 20
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4432
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 20
      4⤵
      Delays execution with timeout.exe
      PID:4340
- - C:\Users\Admin\AppData\Local\Temp\Iioozcrscrdqdprjojgormars2.exe
    C:\Users\Admin\AppData\Local\Temp\Iioozcrscrdqdprjojgormars2.exe
    3⤵
    - Executes dropped EXE
    PID:4472
- C:\Users\Admin\AppData\Local\Temp\ghjkl.exe
  C:\Users\Admin\AppData\Local\Temp\ghjkl.exe
  2⤵
  PID:1892

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

C:\Users\Admin\AppData\Local\Temp\Iioozcrscrdqdprjojgormars2.exe

Filesize
40KB

MD5
e8065b3712ff329829a9a9d191b684d7

SHA1
be243f806044523da8cfbd65b0aa0057e24ee984

SHA256
6b7698fc83039d223e81f3352ea03afdb4fa4c3042a92683298c7fa5f67d5a07

SHA512
73641d298b07f51da61218babfec650d7a9de8c3ad6d10c81dd14cb1ac5d50e19624cfbde78f1c7af10698bfa76e83a79a751569839fabc547cb253c5bd3e0c0

Download Submit
C:\Users\Admin\AppData\Local\Temp\Iioozcrscrdqdprjojgormars2.exe

Filesize
40KB

MD5
e8065b3712ff329829a9a9d191b684d7

SHA1
be243f806044523da8cfbd65b0aa0057e24ee984

SHA256
6b7698fc83039d223e81f3352ea03afdb4fa4c3042a92683298c7fa5f67d5a07

SHA512
73641d298b07f51da61218babfec650d7a9de8c3ad6d10c81dd14cb1ac5d50e19624cfbde78f1c7af10698bfa76e83a79a751569839fabc547cb253c5bd3e0c0

Download Submit
C:\Users\Admin\AppData\Local\Temp\Iioozcrscrdqdprjojgormars2.exe

Filesize
40KB

MD5
e8065b3712ff329829a9a9d191b684d7

SHA1
be243f806044523da8cfbd65b0aa0057e24ee984

SHA256
6b7698fc83039d223e81f3352ea03afdb4fa4c3042a92683298c7fa5f67d5a07

SHA512
73641d298b07f51da61218babfec650d7a9de8c3ad6d10c81dd14cb1ac5d50e19624cfbde78f1c7af10698bfa76e83a79a751569839fabc547cb253c5bd3e0c0

Download Submit
memory/1892-140-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1892-144-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1892-138-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1892-142-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2584-130-0x0000000000DB0000-0x0000000000DC0000-memory.dmp

Filesize
64KB

Download
memory/4472-146-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/4472-149-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/4472-150-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/4832-137-0x0000000000490000-0x00000000004A0000-memory.dmp

Filesize
64KB

Download