arkei | edfaf15aa4e28a3891b08e7e948f0d08680b492b8ba4ca464ad1b68df0190719

General

Target

dcae989d2c708fa2b73374698b1a8acc.exe
Size

336KB
MD5

dcae989d2c708fa2b73374698b1a8acc
SHA1

5846cc14d013c09c1f86796aba571ee65daa2d7e
SHA256

edfaf15aa4e28a3891b08e7e948f0d08680b492b8ba4ca464ad1b68df0190719
SHA512

4216de9f3641ba425cab752c769117f8c52e0087af09ae0413b2afcc2d82cb77ce1da0c5508cfcfa503de8f8f1c4d0b19fe263b65056b69c4de746874e72a0d1

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 CnC Activity (GET)
suricata: ET MALWARE Win32/Vidar Variant/Mars CnC Activity (GET)
suricata
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1488 cmd.exe
Loads dropped DLL 2 IoCs

Processes:

dcae989d2c708fa2b73374698b1a8acc.exe

pid process

1668 dcae989d2c708fa2b73374698b1a8acc.exe
1668 dcae989d2c708fa2b73374698b1a8acc.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

pid	process
1488	cmd.exe

pid	process
1668	dcae989d2c708fa2b73374698b1a8acc.exe
1668	dcae989d2c708fa2b73374698b1a8acc.exe

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:

dcae989d2c708fa2b73374698b1a8acc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	dcae989d2c708fa2b73374698b1a8acc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dcae989d2c708fa2b73374698b1a8acc.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1988 timeout.exe

pid	process
1988	timeout.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

dcae989d2c708fa2b73374698b1a8acc.execmd.exe

description	pid	process	target process
PID 1668 wrote to memory of 1488	1668	dcae989d2c708fa2b73374698b1a8acc.exe	cmd.exe
PID 1668 wrote to memory of 1488	1668	dcae989d2c708fa2b73374698b1a8acc.exe	cmd.exe
PID 1668 wrote to memory of 1488	1668	dcae989d2c708fa2b73374698b1a8acc.exe	cmd.exe
PID 1668 wrote to memory of 1488	1668	dcae989d2c708fa2b73374698b1a8acc.exe	cmd.exe
PID 1488 wrote to memory of 1988	1488	cmd.exe	timeout.exe
PID 1488 wrote to memory of 1988	1488	cmd.exe	timeout.exe
PID 1488 wrote to memory of 1988	1488	cmd.exe	timeout.exe
PID 1488 wrote to memory of 1988	1488	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\dcae989d2c708fa2b73374698b1a8acc.exe
"C:\Users\Admin\AppData\Local\Temp\dcae989d2c708fa2b73374698b1a8acc.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1668

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\dcae989d2c708fa2b73374698b1a8acc.exe" & exit
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1488

C:\Windows\SysWOW64\timeout.exe
timeout /t 5
3⤵
- Delays execution with timeout.exe
PID:1988

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\ProgramData\mozglue.dll
Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\nss3.dll
Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
memory/1488-81-0x0000000000000000-mapping.dmp

Download
memory/1668-57-0x00000000764C1000-0x00000000764C3000-memory.dmp

Filesize
8KB

Download
memory/1668-58-0x00000000002CE000-0x00000000002EF000-memory.dmp

Filesize
132KB

Download
memory/1668-59-0x0000000000400000-0x0000000000670000-memory.dmp

Filesize
2.4MB

Download
memory/1668-60-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1668-54-0x00000000002CE000-0x00000000002EF000-memory.dmp

Filesize
132KB

Download
memory/1668-56-0x0000000000400000-0x0000000000670000-memory.dmp

Filesize
2.4MB

Download
memory/1668-55-0x00000000001C0000-0x00000000001E9000-memory.dmp

Filesize
164KB

Download
memory/1668-82-0x00000000002CE000-0x00000000002EF000-memory.dmp

Filesize
132KB

Download
memory/1668-83-0x0000000000400000-0x0000000000670000-memory.dmp

Filesize
2.4MB

Download
memory/1988-84-0x0000000000000000-mapping.dmp

Download

Analysis

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