arkei | 64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013

General

Target

64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
Size

266KB
MD5

ae6e9033719e98b998df265945e9f572
SHA1

f3303a14fe3b039dfcf82eb1e1a4438a634f4b15
SHA256

64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013
SHA512

4b5c1ea37210f625d1a15115e4e8e1f6aeba9d62bc0ca04abf265772ccf02737e2fbf14e3fa49385d409662c5701508c5fb7811abd24e99a750af25fac266af4

Score

10^/10

arkei default discovery spyware stealer suricata

Malware Config

Extracted

Family

arkei

Botnet

Default

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata

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

Processes:

64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe

Loads dropped DLL 2 IoCs

Processes:

64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe

pid	process
3676	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
3676	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.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

Suspicious use of SetThreadContext 1 IoCs

Processes:

64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe

description	pid	process	target process
PID 3136 set thread context of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe

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

Processes:

64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

5080 timeout.exe

pid	process
5080	timeout.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.execmd.exe

C:\Users\Admin\AppData\Local\Temp\64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
"C:\Users\Admin\AppData\Local\Temp\64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3136

C:\Users\Admin\AppData\Local\Temp\64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
"C:\Users\Admin\AppData\Local\Temp\64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe"
2⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:3676

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:2560

C:\Windows\SysWOW64\timeout.exe
timeout /t 5
4⤵
- Delays execution with timeout.exe
PID:5080

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\mozglue.dll
Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
C:\ProgramData\nss3.dll
Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
memory/2560-158-0x0000000000000000-mapping.dmp

Download
memory/3136-133-0x0000000000B0D000-0x0000000000B2D000-memory.dmp

Filesize
128KB

Download
memory/3136-135-0x0000000000AA0000-0x0000000000ACA000-memory.dmp

Filesize
168KB

Download
memory/3676-130-0x0000000000000000-mapping.dmp

Download
memory/3676-131-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/3676-134-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/3676-136-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/3676-137-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/3676-159-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/5080-160-0x0000000000000000-mapping.dmp

Download

description	pid	process	target process
PID 3136 wrote to memory of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
PID 3136 wrote to memory of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
PID 3136 wrote to memory of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
PID 3136 wrote to memory of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
PID 3136 wrote to memory of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
PID 3136 wrote to memory of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
PID 3136 wrote to memory of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
PID 3136 wrote to memory of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
PID 3136 wrote to memory of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
PID 3136 wrote to memory of 3676	3136	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe
PID 3676 wrote to memory of 2560	3676	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	cmd.exe
PID 3676 wrote to memory of 2560	3676	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	cmd.exe
PID 3676 wrote to memory of 2560	3676	64b433370c2ce0b64325ab8e7f34a47f9423eec24a607a040b8361630788a013.exe	cmd.exe
PID 2560 wrote to memory of 5080	2560	cmd.exe	timeout.exe
PID 2560 wrote to memory of 5080	2560	cmd.exe	timeout.exe
PID 2560 wrote to memory of 5080	2560	cmd.exe	timeout.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads