arkei | 8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432

General

Target

8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe
Size

12KB
MD5

daeed15b76005f0165fbd4781e47b2f6
SHA1

148fd184577272f94f1f54e27805d795524c1f85
SHA256

8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432
SHA512

ef0e5bfc7447e0c878eca60724c63682ac8479de431097db5ca96d4ed7fd8e26657160038431530111cadc843ba7b50638baeca76d130e29a7a829b21c75d1cd

Score

10^/10

arkei default 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 gate .php GET with minimal headers
suricata: ET MALWARE Generic gate .php GET with minimal headers
suricata
suricata: ET MALWARE Possible Windows executable sent when remote host claims to send html content
suricata: ET MALWARE Possible Windows executable sent when remote host claims to send html content
suricata
Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
4556	RegAsm.exe
4556	RegAsm.exe
4556	RegAsm.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4516 set thread context of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1704	4556	WerFault.exe	77

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	77

C:\Users\Admin\AppData\Local\Temp\8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe
"C:\Users\Admin\AppData\Local\Temp\8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4516
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Loads dropped DLL
  PID:4556
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4556 -s 1444
    3⤵
    - Program crash
    PID:1704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4556 -ip 4556
1⤵
PID:3796

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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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:\ProgramData\sqlite3.dll

Filesize
630KB

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
memory/4516-130-0x000001DE8E250000-0x000001DE8E258000-memory.dmp

Filesize
32KB

Download
memory/4516-131-0x00007FFBE3E00000-0x00007FFBE48C1000-memory.dmp

Filesize
10.8MB

Download
memory/4516-134-0x00007FFBE3E00000-0x00007FFBE48C1000-memory.dmp

Filesize
10.8MB

Download
memory/4556-132-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4556-136-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4556-137-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4556-138-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4556-142-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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