arkei | 672fea64c92edc4d937d3132577b65813738bfddeab6a6b3ef35e6fa4b987009

General

Target

asdf.exe
Size

1.1MB
MD5

c3f533c47a2f995cd4b5d16653698609
SHA1

223cfb523ff8b64b339a34db3808dc6a386752a4
SHA256

672fea64c92edc4d937d3132577b65813738bfddeab6a6b3ef35e6fa4b987009
SHA512

6f6635c7864f675f0f9dfe315c5a7aeef93da7ca91b6016eed8506b7e1c809de8031f9659f87339f58e807a6d59b83214896af5ba71659b0b9e50511a1c91761

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 Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4
suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4
suricata
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata

Executes dropped EXE 2 IoCs

pid	Process
1540	dhgerme.exe
1844	dhgerme.exe

Loads dropped DLL 5 IoCs

pid	Process
1584	asdf.exe
1584	asdf.exe
1540	dhgerme.exe
1844	dhgerme.exe
1844	dhgerme.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 2 IoCs

description	pid	Process	procid_target
PID 1584 set thread context of 1356	1584	asdf.exe	29
PID 1540 set thread context of 1844	1540	dhgerme.exe	30

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dhgerme.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	dhgerme.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1752	timeout.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1584	asdf.exe
1540	dhgerme.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1584	asdf.exe
1540	dhgerme.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1584 wrote to memory of 1540	1584	asdf.exe	28
PID 1584 wrote to memory of 1540	1584	asdf.exe	28
PID 1584 wrote to memory of 1540	1584	asdf.exe	28
PID 1584 wrote to memory of 1540	1584	asdf.exe	28
PID 1584 wrote to memory of 1356	1584	asdf.exe	29
PID 1584 wrote to memory of 1356	1584	asdf.exe	29
PID 1584 wrote to memory of 1356	1584	asdf.exe	29
PID 1584 wrote to memory of 1356	1584	asdf.exe	29
PID 1584 wrote to memory of 1356	1584	asdf.exe	29
PID 1540 wrote to memory of 1844	1540	dhgerme.exe	30
PID 1540 wrote to memory of 1844	1540	dhgerme.exe	30
PID 1540 wrote to memory of 1844	1540	dhgerme.exe	30
PID 1540 wrote to memory of 1844	1540	dhgerme.exe	30
PID 1540 wrote to memory of 1844	1540	dhgerme.exe	30
PID 1844 wrote to memory of 1048	1844	dhgerme.exe	34
PID 1844 wrote to memory of 1048	1844	dhgerme.exe	34
PID 1844 wrote to memory of 1048	1844	dhgerme.exe	34
PID 1844 wrote to memory of 1048	1844	dhgerme.exe	34
PID 1048 wrote to memory of 1752	1048	cmd.exe	36
PID 1048 wrote to memory of 1752	1048	cmd.exe	36
PID 1048 wrote to memory of 1752	1048	cmd.exe	36
PID 1048 wrote to memory of 1752	1048	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\asdf.exe
"C:\Users\Admin\AppData\Local\Temp\asdf.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1584
- C:\Users\Admin\AppData\Local\Temp\dhgerme.exe
  "C:\Users\Admin\AppData\Local\Temp\dhgerme.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1540
- - C:\Users\Admin\AppData\Local\Temp\dhgerme.exe
    "C:\Users\Admin\AppData\Local\Temp\dhgerme.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious use of WriteProcessMemory
    PID:1844
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\dhgerme.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1048
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout /t 5
        5⤵
        Delays execution with timeout.exe
        
        PID:1752
- C:\Users\Admin\AppData\Local\Temp\asdf.exe
  "C:\Users\Admin\AppData\Local\Temp\asdf.exe"
  2⤵
  PID:1356

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\dhgerme.exe

Filesize
636KB

MD5
3db09f87da90c69511e1e8b27adac692

SHA1
f07109e4e9e46467022d45cf12c79f4ead85e0b6

SHA256
e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132

SHA512
d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a

Download Submit
C:\Users\Admin\AppData\Local\Temp\dhgerme.exe

Filesize
636KB

MD5
3db09f87da90c69511e1e8b27adac692

SHA1
f07109e4e9e46467022d45cf12c79f4ead85e0b6

SHA256
e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132

SHA512
d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a

Download Submit
C:\Users\Admin\AppData\Local\Temp\dhgerme.exe

Filesize
636KB

MD5
3db09f87da90c69511e1e8b27adac692

SHA1
f07109e4e9e46467022d45cf12c79f4ead85e0b6

SHA256
e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132

SHA512
d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a

Download Submit
\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
\Users\Admin\AppData\Local\Temp\dhgerme.exe

Filesize
636KB

MD5
3db09f87da90c69511e1e8b27adac692

SHA1
f07109e4e9e46467022d45cf12c79f4ead85e0b6

SHA256
e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132

SHA512
d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a

Download Submit
\Users\Admin\AppData\Local\Temp\dhgerme.exe

Filesize
636KB

MD5
3db09f87da90c69511e1e8b27adac692

SHA1
f07109e4e9e46467022d45cf12c79f4ead85e0b6

SHA256
e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132

SHA512
d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a

Download Submit
\Users\Admin\AppData\Local\Temp\dhgerme.exe

Filesize
636KB

MD5
3db09f87da90c69511e1e8b27adac692

SHA1
f07109e4e9e46467022d45cf12c79f4ead85e0b6

SHA256
e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132

SHA512
d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a

Download Submit
memory/1356-75-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1356-72-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1584-68-0x00000000003F0000-0x00000000003F7000-memory.dmp

Filesize
28KB

Download
memory/1584-56-0x0000000074F91000-0x0000000074F93000-memory.dmp

Filesize
8KB

Download
memory/1844-73-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1844-76-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1844-70-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1844-98-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download

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