arkei | 529586cbbd8586d7f33a3ea9bdd517b7ead617b4e12165106e81e4bfad859474

General

Target

asdf.exe
Size

772KB
MD5

d946c183fd128b4acf88d83ee89d79d3
SHA1

6f35da72f339c7101e93a7adada27d24902db598
SHA256

529586cbbd8586d7f33a3ea9bdd517b7ead617b4e12165106e81e4bfad859474
SHA512

793727b08b92df108144308a7ac798e55ba35742308db18466cce6caa564b6c1cb5b0fece2850511450f69e497df1dba49a9cb3a0ff17b4f9cc27e05ef2fcd62

Score

10^/10

arkei recordbreaker default discovery spyware stealer suricata

Malware Config

Extracted

Family

arkei

Botnet

Default

Extracted

Family

recordbreaker

C2

http://136.244.65.99/

http://140.82.52.55/

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei
RecordBreaker
RecordBreaker is an information stealer capable of downloading and executing secondary payloads written in C++.
stealer recordbreaker
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 Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata
Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2132	fcvtee.exe
5004	fcvtee.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	fcvtee.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	asdf.exe

Loads dropped DLL 2 IoCs

pid	Process
5004	fcvtee.exe
5004	fcvtee.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 2132 set thread context of 5004	2132	fcvtee.exe	81
PID 532 set thread context of 3748	532	asdf.exe	82

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3620	timeout.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000_Classes\Local Settings	fcvtee.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2132	fcvtee.exe
532	asdf.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
532	asdf.exe
2132	fcvtee.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 532 wrote to memory of 2132	532	asdf.exe	78
PID 532 wrote to memory of 2132	532	asdf.exe	78
PID 532 wrote to memory of 2132	532	asdf.exe	78
PID 2132 wrote to memory of 5004	2132	fcvtee.exe	81
PID 2132 wrote to memory of 5004	2132	fcvtee.exe	81
PID 2132 wrote to memory of 5004	2132	fcvtee.exe	81
PID 2132 wrote to memory of 5004	2132	fcvtee.exe	81
PID 532 wrote to memory of 3748	532	asdf.exe	82
PID 532 wrote to memory of 3748	532	asdf.exe	82
PID 532 wrote to memory of 3748	532	asdf.exe	82
PID 532 wrote to memory of 3748	532	asdf.exe	82
PID 5004 wrote to memory of 4928	5004	fcvtee.exe	92
PID 5004 wrote to memory of 4928	5004	fcvtee.exe	92
PID 5004 wrote to memory of 4928	5004	fcvtee.exe	92
PID 4928 wrote to memory of 3620	4928	cmd.exe	94
PID 4928 wrote to memory of 3620	4928	cmd.exe	94
PID 4928 wrote to memory of 3620	4928	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\asdf.exe
"C:\Users\Admin\AppData\Local\Temp\asdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:532
- C:\Users\Admin\AppData\Roaming\fcvtee.exe
  "C:\Users\Admin\AppData\Roaming\fcvtee.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2132
- - C:\Users\Admin\AppData\Roaming\fcvtee.exe
    "C:\Users\Admin\AppData\Roaming\fcvtee.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Loads dropped DLL
    - Checks processor information in registry
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:5004
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Roaming\fcvtee.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4928
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout /t 5
        5⤵
        Delays execution with timeout.exe
        
        PID:3620
- C:\Users\Admin\AppData\Local\Temp\asdf.exe
  "C:\Users\Admin\AppData\Local\Temp\asdf.exe"
  2⤵
  PID:3748

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4860

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

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
C:\Users\Admin\AppData\Roaming\fcvtee.exe

Filesize
392KB

MD5
32ab5685131d8bcfa172bf165adf9338

SHA1
5e3b167bc66a15c246a8f29f7b634cbe52731319

SHA256
2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

SHA512
c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

Download Submit
C:\Users\Admin\AppData\Roaming\fcvtee.exe

Filesize
392KB

MD5
32ab5685131d8bcfa172bf165adf9338

SHA1
5e3b167bc66a15c246a8f29f7b634cbe52731319

SHA256
2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

SHA512
c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

Download Submit
C:\Users\Admin\AppData\Roaming\fcvtee.exe

Filesize
392KB

MD5
32ab5685131d8bcfa172bf165adf9338

SHA1
5e3b167bc66a15c246a8f29f7b634cbe52731319

SHA256
2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

SHA512
c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

Download Submit
memory/532-142-0x0000000003520000-0x0000000003528000-memory.dmp

Filesize
32KB

Download
memory/2132-144-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2132-139-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3748-143-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3748-145-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/5004-140-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/5004-146-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/5004-168-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads