arkei | 0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b

General

Target

0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe
Size

392KB
MD5

5fea51478a01f10a78d428751e973aba
SHA1

cb7f1e3acc3636a6f890edb8c44d0abe2674ec1c
SHA256

0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b
SHA512

47ea5c07b4d9d2bd5f9045906da94961f9d7d64e55c992435bdae2d21334daed98f096892da46f2bd18637f48ecac6bc80d6531c5a1cacceb7f3a46182e103c6

Score

10^/10

arkei redline 04062022 default infostealer stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

C2

http://62.204.41.69/p8jG9WvgbE.php

Extracted

Family

redline

Botnet

04062022

C2

62.204.41.166:27688

Attributes

auth_value
48182fe753fa2aff7472da064aa2a5d9

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3104-141-0x0000000000400000-0x0000000000424000-memory.dmp	family_redline
behavioral2/memory/3104-142-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline

Executes dropped EXE 1 IoCs

pid	Process
4468	Fvdfggf.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-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{667D11B8-B2C3-481C-8F37-99012FC8371E}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{3626D992-E056-40FD-975E-4DD9D2A32FAE}.catalogItem	svchost.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1996 set thread context of 4360	1996	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe	76
PID 4468 set thread context of 3104	4468	Fvdfggf.exe	77

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 3 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	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1996	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe
4468	Fvdfggf.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1996	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe
4468	Fvdfggf.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 4468	1996	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe	75
PID 1996 wrote to memory of 4468	1996	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe	75
PID 1996 wrote to memory of 4468	1996	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe	75
PID 1996 wrote to memory of 4360	1996	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe	76
PID 1996 wrote to memory of 4360	1996	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe	76
PID 1996 wrote to memory of 4360	1996	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe	76
PID 1996 wrote to memory of 4360	1996	0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe	76
PID 4468 wrote to memory of 3104	4468	Fvdfggf.exe	77
PID 4468 wrote to memory of 3104	4468	Fvdfggf.exe	77
PID 4468 wrote to memory of 3104	4468	Fvdfggf.exe	77
PID 4468 wrote to memory of 3104	4468	Fvdfggf.exe	77

C:\Users\Admin\AppData\Local\Temp\0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe
"C:\Users\Admin\AppData\Local\Temp\0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\Fvdfggf.exe
  "C:\Users\Admin\AppData\Local\Temp\Fvdfggf.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4468
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
    3⤵
    PID:3104
- C:\Users\Admin\AppData\Local\Temp\0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe
  "C:\Users\Admin\AppData\Local\Temp\0f63b4b4659449eee766610af817b786e9cd7622743851cf7b71430613d7521b.exe"
  2⤵
  PID:4360

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:3256

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
172KB

MD5
e124d6fab64aa638922bc7861998fa8c

SHA1
3420d895a8ef834eaf85c800fb83b1eca0a7816e

SHA256
de8f8f5217cc3fca88d5261c8ad2c3115750ccf4f7bf3e7904760af2014959e3

SHA512
b456215751eeda2f5b633cd52b5b5d820d1dc96d9ec4f4f35fa4fa1c5859dd925c949f0f6270af80a12ede9f9ac45f4a979aea7f8d4da459ed05cd1b7bdd5ed7

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

Filesize
172KB

MD5
e124d6fab64aa638922bc7861998fa8c

SHA1
3420d895a8ef834eaf85c800fb83b1eca0a7816e

SHA256
de8f8f5217cc3fca88d5261c8ad2c3115750ccf4f7bf3e7904760af2014959e3

SHA512
b456215751eeda2f5b633cd52b5b5d820d1dc96d9ec4f4f35fa4fa1c5859dd925c949f0f6270af80a12ede9f9ac45f4a979aea7f8d4da459ed05cd1b7bdd5ed7

Download Submit
memory/1996-138-0x00000000034C0000-0x00000000034C7000-memory.dmp

Filesize
28KB

Download
memory/3104-143-0x0000000005A90000-0x00000000060A8000-memory.dmp

Filesize
6.1MB

Download
memory/3104-141-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3104-142-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3104-144-0x0000000005490000-0x00000000054A2000-memory.dmp

Filesize
72KB

Download
memory/3104-145-0x00000000055C0000-0x00000000056CA000-memory.dmp

Filesize
1.0MB

Download
memory/3104-146-0x00000000054F0000-0x000000000552C000-memory.dmp

Filesize
240KB

Download
memory/4360-139-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads