arkei | b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238

Analysis

max time kernel
113s
max time network
119s
platform
windows10_x64
resource
win10-en-20210920
submitted
27/09/2021, 08:33

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General

Target
75a4c25e5af7c58034b2323a11c63ce2.exe
Size 292KB
Sample210927-kf5cqagbbm
SHA256 b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238
MD5 75a4c25e5af7c58034b2323a11c63ce2
SHA1 51bdcfb40c10aebb1374a0a6257d1c63d88a608b
SHA512 5c3d802a28aaacfdea2c21f32bfbb9383f0f3adc09f89616517358e6b3ebfae1d778cc49a1f529133d424cedc1f1eb5f00d6d4e3f9f760ed8d86820ead65c2c5
MD5 SHA1 SHA512

Score

10^/10

arkei spyware stealer

Malware Config

Signatures

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

Arkei Stealer Payload 1 IoCs

stealer

resource	yara_rule
behavioral2/memory/1776-116-0x0000000000400000-0x000000000044D000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
1776	75a4c25e5af7c58034b2323a11c63ce2.exe
1776	75a4c25e5af7c58034b2323a11c63ce2.exe
1776	75a4c25e5af7c58034b2323a11c63ce2.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2752	1776	WerFault.exe	69

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe
2752	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	2752	WerFault.exe
Token: SeBackupPrivilege	2752	WerFault.exe
Token: SeDebugPrivilege	2752	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\75a4c25e5af7c58034b2323a11c63ce2.exe
"C:\Users\Admin\AppData\Local\Temp\75a4c25e5af7c58034b2323a11c63ce2.exe"
1⤵
- Loads dropped DLL
PID:1776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1776 -s 1336
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2752

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1776-115-0x00000000021C0000-0x00000000021ED000-memory.dmp

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memory/1776-116-0x0000000000400000-0x000000000044D000-memory.dmp

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