arkei | 44d14eff8d2c2465b46a84d442c0f6eb8257865a35ca254cb5ddaffbb26867d9

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
07-09-2023 21:23

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General

Target

2148-0-0x0000000000400000-0x000000000043D000-memory.exe
Size

244KB
MD5

dd9535a504ca6efc32f0dd698a9c6477
SHA1

67d3f6006c4aee916e09f865d8b49ec3eccb116a
SHA256

44d14eff8d2c2465b46a84d442c0f6eb8257865a35ca254cb5ddaffbb26867d9
SHA512

205427cadfd164d9b1ce294c8d842a276a64cef78ecced3f577a99721a01e0387663db607d1b32dd6bcdeec941ed8b442f9afefc7c766dbe31d8c4cb26253758
SSDEEP

1536:UYz/E8hW9NdYAygNlvhIoOl9SAKD7PNch1ZmmImh1ADN8blGe5SagvHLNaV8CJ3n:Um/E8k9ZjpIL+zNch12KbAwSaS6JSp8

Score

10^/10

arkei stealer

Malware Config

Signatures

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

Drops file in System32 directory 1 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{361652CA-31DF-4E5E-B115-404B62618D44}.catalogItem	svchost.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3768 2016 WerFault.exe 2148-0-0x0000000000400000-0x000000000043D000-memory.exe

pid	pid_target	process	target process
3768	2016	WerFault.exe	2148-0-0x0000000000400000-0x000000000043D000-memory.exe

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

Processes:

svchost.exe

description	ioc	process
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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

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

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\2148-0-0x0000000000400000-0x000000000043D000-memory.exe
"C:\Users\Admin\AppData\Local\Temp\2148-0-0x0000000000400000-0x000000000043D000-memory.exe"
1⤵
PID:2016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2016 -s 216
2⤵
- Program crash
PID:3768

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:1444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2016 -ip 2016
1⤵
PID:2036

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2016-0-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

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