arkei | 6f943d65dcd851c0f5209915f9da7937b474fe40cb3da03579916ebb4f192e5d

General

Target
e109ffd6170183fc6e8ab7fcbf07d9f6.exe
Size 159KB
Sample220615-vg4gxsbca8
SHA256 6f943d65dcd851c0f5209915f9da7937b474fe40cb3da03579916ebb4f192e5d
MD5 e109ffd6170183fc6e8ab7fcbf07d9f6
SHA1 6727234317ee5318ef83fbef4b0cf2510e262405
SHA512 138ca2a6c3b1e67b9d6e849e66850fa3b187e89c780156582446fa602b615e684585157d524283010115e4c748d58985c2c1252e0db623513ba098ba116c3c6c
MD5 SHA1 SHA512

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 Generic Request to gate.php Dotted-Quad
suricata: ET MALWARE Generic Request to gate.php Dotted-Quad
suricata
suricata: ET MALWARE Generic gate .php GET with minimal headers
suricata: ET MALWARE Generic gate .php GET with minimal headers
suricata
suricata: ET MALWARE Trojan Generic - POST To gate.php with no accept headers
suricata: ET MALWARE Trojan Generic - POST To gate.php with no accept headers
suricata
suricata: ET MALWARE Trojan Generic - POST To gate.php with no referer
suricata: ET MALWARE Trojan Generic - POST To gate.php with no referer
suricata
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

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	e109ffd6170183fc6e8ab7fcbf07d9f6.exe

Loads dropped DLL 2 IoCs

pid	Process
4416	e109ffd6170183fc6e8ab7fcbf07d9f6.exe
4416	e109ffd6170183fc6e8ab7fcbf07d9f6.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

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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	e109ffd6170183fc6e8ab7fcbf07d9f6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	e109ffd6170183fc6e8ab7fcbf07d9f6.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4528	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4416 wrote to memory of 4552	4416	e109ffd6170183fc6e8ab7fcbf07d9f6.exe	82
PID 4416 wrote to memory of 4552	4416	e109ffd6170183fc6e8ab7fcbf07d9f6.exe	82
PID 4416 wrote to memory of 4552	4416	e109ffd6170183fc6e8ab7fcbf07d9f6.exe	82
PID 4552 wrote to memory of 4528	4552	cmd.exe	84
PID 4552 wrote to memory of 4528	4552	cmd.exe	84
PID 4552 wrote to memory of 4528	4552	cmd.exe	84

C:\Users\Admin\AppData\Local\Temp\e109ffd6170183fc6e8ab7fcbf07d9f6.exe
"C:\Users\Admin\AppData\Local\Temp\e109ffd6170183fc6e8ab7fcbf07d9f6.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4416
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\e109ffd6170183fc6e8ab7fcbf07d9f6.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4552
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:4528

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

mozglue.dll

Path C:\ProgramData\mozglue.dll
Size 133KB
SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
MD5 8f73c08a9660691143661bf7332c3c27
SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
SSDEEP 3072:7Gyzk/x2Wp53pUzPoNpj/kVghp1qt/dXDyp4D2JJJvPhrSeTuk:6yQ2Wp53iO/kVghp12/dXDyyD2JJJvPR
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path C:\ProgramData\nss3.dll
Size 1.2MB
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
SSDEEP 24576:Sb5zzlswYNYLVJAwfpeYQ1Dw/fEE8DhSJVIVfRyAkgO6S/V/jbHpls4MSRSMxkoo:4zW5ygDwnEZIYkjgWjblMSRSMqH
MD5 SHA1 SHA512 SSDEEP

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memory/4416-130-0x0000000000400000-0x000000000043D000-memory.dmp

Download

memory/4416-131-0x0000000060900000-0x0000000060992000-memory.dmp

Download

memory/4416-153-0x0000000000400000-0x000000000043D000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads