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

Processes:

RegAsm.exe

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

pid	process
4556	RegAsm.exe
4556	RegAsm.exe
4556	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe

description	pid	process	target process
PID 4516 set thread context of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1704 4556 WerFault.exe RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe

description pid process

Token: SeDebugPrivilege 4516 8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe

pid	pid_target	process	target process
1704	4556	WerFault.exe	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe

description	pid	process	target process
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe
PID 4516 wrote to memory of 4556	4516	8c3ba6d3a6f3968bbcae8a8ae035d0b1ab8425ca4797900f43d996a2c1839432.exe	RegAsm.exe

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 Matrix ATT&CK 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

Exfiltration

Command and Control

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/4556-133-0x000000000042E084-mapping.dmp

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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