arkei | 3f0841eff18ab98e2614071d89619c1fb84e653cb1c524384801bdf00d7e9d42

Analysis

max time kernel
140s
max time network
176s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
03/06/2022, 00:24

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General

Target

f3b2c0e21faa2d771b315cfda97a4c32.exe
Size

2.5MB
MD5

f3b2c0e21faa2d771b315cfda97a4c32
SHA1

806b920c7c0299ffa9fbe4c94825d0313381927f
SHA256

3f0841eff18ab98e2614071d89619c1fb84e653cb1c524384801bdf00d7e9d42
SHA512

6c0503c9523027ebc2c4363e2d3aef39c513316aaf69bdf5f660112a1f3f1371ca20d5f8f134485ee573076084592ace1bc5e1056c8d645e010bb6b2267b19b2

Score

10^/10

arkei stealer

Malware Config

Signatures

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

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-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	f3b2c0e21faa2d771b315cfda97a4c32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
1788	f3b2c0e21faa2d771b315cfda97a4c32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: 33	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
Token: SeIncBasePriorityPrivilege	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe
Token: 33	1724	f3b2c0e21faa2d771b315cfda97a4c32.exe
Token: SeIncBasePriorityPrivilege	1724	f3b2c0e21faa2d771b315cfda97a4c32.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1788 wrote to memory of 3276	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	85
PID 1788 wrote to memory of 3276	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	85
PID 1788 wrote to memory of 3276	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	85
PID 1788 wrote to memory of 3840	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	86
PID 1788 wrote to memory of 3840	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	86
PID 1788 wrote to memory of 3840	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	86
PID 1788 wrote to memory of 3224	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	87
PID 1788 wrote to memory of 3224	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	87
PID 1788 wrote to memory of 3224	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	87
PID 1788 wrote to memory of 2060	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	88
PID 1788 wrote to memory of 2060	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	88
PID 1788 wrote to memory of 2060	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	88
PID 1788 wrote to memory of 4772	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	89
PID 1788 wrote to memory of 4772	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	89
PID 1788 wrote to memory of 4772	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	89
PID 1788 wrote to memory of 4288	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	90
PID 1788 wrote to memory of 4288	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	90
PID 1788 wrote to memory of 4288	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	90
PID 1788 wrote to memory of 3684	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	91
PID 1788 wrote to memory of 3684	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	91
PID 1788 wrote to memory of 3684	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	91
PID 1788 wrote to memory of 3628	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	92
PID 1788 wrote to memory of 3628	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	92
PID 1788 wrote to memory of 3628	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	92
PID 1788 wrote to memory of 820	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	93
PID 1788 wrote to memory of 820	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	93
PID 1788 wrote to memory of 820	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	93
PID 1788 wrote to memory of 536	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	94
PID 1788 wrote to memory of 536	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	94
PID 1788 wrote to memory of 536	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	94
PID 1788 wrote to memory of 1676	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	95
PID 1788 wrote to memory of 1676	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	95
PID 1788 wrote to memory of 1676	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	95
PID 1788 wrote to memory of 1724	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	96
PID 1788 wrote to memory of 1724	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	96
PID 1788 wrote to memory of 1724	1788	f3b2c0e21faa2d771b315cfda97a4c32.exe	96

C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
"C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1788
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:3276
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:3840
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:3224
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:2060
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:4772
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:4288
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:3684
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:3628
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:820
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:536
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  PID:1676
- C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe
  "C:\Users\Admin\AppData\Local\Temp\f3b2c0e21faa2d771b315cfda97a4c32.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1724

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

Replay Monitor

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Downloads

memory/1724-168-0x00000000031C0000-0x00000000031C4000-memory.dmp

Filesize
16KB

Download
memory/1724-167-0x00000000001C0000-0x00000000005F1000-memory.dmp

Filesize
4.2MB

Download
memory/1724-166-0x00000000032C0000-0x0000000003429000-memory.dmp

Filesize
1.4MB

Download
memory/1724-162-0x0000000001010000-0x0000000001014000-memory.dmp

Filesize
16KB

Download
memory/1724-163-0x00000000031C0000-0x00000000031C4000-memory.dmp

Filesize
16KB

Download
memory/1724-164-0x0000000003240000-0x000000000324F000-memory.dmp

Filesize
60KB

Download
memory/1724-161-0x00000000012C0000-0x00000000015CD000-memory.dmp

Filesize
3.1MB

Download
memory/1724-157-0x00000000001C0000-0x00000000005F1000-memory.dmp

Filesize
4.2MB

Download
memory/1788-139-0x0000000000820000-0x0000000000824000-memory.dmp

Filesize
16KB

Download
memory/1788-138-0x0000000000DF0000-0x00000000010FD000-memory.dmp

Filesize
3.1MB

Download
memory/1788-131-0x0000000000DF0000-0x00000000010FD000-memory.dmp

Filesize
3.1MB

Download
memory/1788-132-0x0000000000820000-0x0000000000824000-memory.dmp

Filesize
16KB

Download
memory/1788-133-0x0000000004DB0000-0x0000000004DB4000-memory.dmp

Filesize
16KB

Download
memory/1788-134-0x0000000002CE0000-0x0000000002D08000-memory.dmp

Filesize
160KB

Download
memory/1788-148-0x000000000FDC0000-0x00000000100BA000-memory.dmp

Filesize
3.0MB

Download
memory/1788-135-0x0000000002E30000-0x0000000002F99000-memory.dmp

Filesize
1.4MB

Download
memory/1788-136-0x0000000002E30000-0x0000000002F99000-memory.dmp

Filesize
1.4MB

Download
memory/1788-160-0x000000000FDC0000-0x000000000FDFC000-memory.dmp

Filesize
240KB

Download
memory/1788-159-0x0000000002E30000-0x0000000002F99000-memory.dmp

Filesize
1.4MB

Download
memory/1788-142-0x000000000FDC0000-0x00000000100BA000-memory.dmp

Filesize
3.0MB

Download
memory/1788-141-0x000000000FDC0000-0x00000000100BA000-memory.dmp

Filesize
3.0MB

Download
memory/1788-140-0x0000000004DB0000-0x0000000004DB4000-memory.dmp

Filesize
16KB

Download
memory/1788-130-0x00000000001C0000-0x00000000005F1000-memory.dmp

Filesize
4.2MB

Download
memory/1788-137-0x00000000001C0000-0x00000000005F1000-memory.dmp

Filesize
4.2MB

Download
memory/1788-158-0x00000000001C0000-0x00000000005F1000-memory.dmp

Filesize
4.2MB

Download
memory/3276-144-0x00000000001C0000-0x00000000005F1000-memory.dmp

Filesize
4.2MB

Download