arkei | 2e14b592904e292539d9fc9d57a06df31676d5645ebaa49ebe129044d2d3baa3

General

Target
2674384ebcdff2bcf5cd06698c8be68d.exe
Size 159KB
Sample210927-pncd5aghfp
SHA256 2e14b592904e292539d9fc9d57a06df31676d5645ebaa49ebe129044d2d3baa3
MD5 2674384ebcdff2bcf5cd06698c8be68d
SHA1 7453a42025a54b36edde94316d025167610daa26
SHA512 49d3aba95508579cc58cac09904861e7370539e473c6bc13314cc4ba372528c3ce602f366bb93e6fb77caa13f978a44a9b7777dc88bde4edf3fbbd2a74b2c739
MD5 SHA1 SHA512

Score

10^/10

arkei discovery spyware stealer

Malware Config

Signatures

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

Arkei Stealer Payload 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/1232-53-0x00000000001B0000-0x00000000001C9000-memory.dmp	family_arkei
behavioral1/memory/1232-54-0x0000000000400000-0x00000000004AF000-memory.dmp	family_arkei

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
876	cmd.exe

Loads dropped DLL 5 IoCs

pid	Process
1232	2674384ebcdff2bcf5cd06698c8be68d.exe
1232	2674384ebcdff2bcf5cd06698c8be68d.exe
1232	2674384ebcdff2bcf5cd06698c8be68d.exe
1232	2674384ebcdff2bcf5cd06698c8be68d.exe
1232	2674384ebcdff2bcf5cd06698c8be68d.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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	2674384ebcdff2bcf5cd06698c8be68d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2674384ebcdff2bcf5cd06698c8be68d.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
552	timeout.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 876	1232	2674384ebcdff2bcf5cd06698c8be68d.exe	29
PID 1232 wrote to memory of 876	1232	2674384ebcdff2bcf5cd06698c8be68d.exe	29
PID 1232 wrote to memory of 876	1232	2674384ebcdff2bcf5cd06698c8be68d.exe	29
PID 1232 wrote to memory of 876	1232	2674384ebcdff2bcf5cd06698c8be68d.exe	29
PID 876 wrote to memory of 552	876	cmd.exe	31
PID 876 wrote to memory of 552	876	cmd.exe	31
PID 876 wrote to memory of 552	876	cmd.exe	31
PID 876 wrote to memory of 552	876	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\2674384ebcdff2bcf5cd06698c8be68d.exe
"C:\Users\Admin\AppData\Local\Temp\2674384ebcdff2bcf5cd06698c8be68d.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\2674384ebcdff2bcf5cd06698c8be68d.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:876
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:552

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1232-53-0x00000000001B0000-0x00000000001C9000-memory.dmp

Download

memory/1232-54-0x0000000000400000-0x00000000004AF000-memory.dmp

Download

memory/1232-55-0x0000000074F81000-0x0000000074F83000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads