arkei | 27c43e0863d1f53297dc16f09626d956c6f86cf3285bbd8eb8488eccb564fa66

General

Target

bffa608e609a6e2f67d01bb5f64ba70a.exe
Size

2.6MB
MD5

bffa608e609a6e2f67d01bb5f64ba70a
SHA1

dfc31151b6886f6a0e18c6a564f766591772b78f
SHA256

27c43e0863d1f53297dc16f09626d956c6f86cf3285bbd8eb8488eccb564fa66
SHA512

4936cea91c0d0cfbba73d0a62fb31c3cf4f915611c031f358bb9f86fceeed8318d25b3b2e9785bed7a77d3c4093a48b8d58a01520190fa6fd30a2d27276863b7
SSDEEP

12288:ljT1qos+lTLzwN9RYIA17At7y7qP7d1JHywHS38hy:+UlyYIApAxyGd1JSgS3my

Score

10^/10

arkei marsstealer default spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

Extracted

Family

marsstealer

Botnet

Default

C2

91.92.250.149/gate.php

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei
Mars Stealer
An infostealer written in C++ based on other infostealers.
stealer marsstealer
Loads dropped DLL 2 IoCs

Processes:

AddinProcess32.exe

pid process

1124 AddinProcess32.exe
1124 AddinProcess32.exe
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Suspicious use of SetThreadContext 1 IoCs

Processes:

bffa608e609a6e2f67d01bb5f64ba70a.exe

description pid process target process

PID 284 set thread context of 1124 284 bffa608e609a6e2f67d01bb5f64ba70a.exe AddinProcess32.exe

pid	process
1124	AddinProcess32.exe
1124	AddinProcess32.exe

description	pid	process	target process
PID 284 set thread context of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe

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

Processes:

AddinProcess32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	AddinProcess32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	AddinProcess32.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2828 timeout.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

bffa608e609a6e2f67d01bb5f64ba70a.exe

description pid process

Token: SeDebugPrivilege 284 bffa608e609a6e2f67d01bb5f64ba70a.exe

pid	process
2828	timeout.exe

description	pid	process
Token: SeDebugPrivilege	284	bffa608e609a6e2f67d01bb5f64ba70a.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

bffa608e609a6e2f67d01bb5f64ba70a.exeAddinProcess32.execmd.exe

description	pid	process	target process
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 284 wrote to memory of 1124	284	bffa608e609a6e2f67d01bb5f64ba70a.exe	AddinProcess32.exe
PID 1124 wrote to memory of 544	1124	AddinProcess32.exe	cmd.exe
PID 1124 wrote to memory of 544	1124	AddinProcess32.exe	cmd.exe
PID 1124 wrote to memory of 544	1124	AddinProcess32.exe	cmd.exe
PID 1124 wrote to memory of 544	1124	AddinProcess32.exe	cmd.exe
PID 544 wrote to memory of 2828	544	cmd.exe	timeout.exe
PID 544 wrote to memory of 2828	544	cmd.exe	timeout.exe
PID 544 wrote to memory of 2828	544	cmd.exe	timeout.exe
PID 544 wrote to memory of 2828	544	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe
"C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:284

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe"
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1124

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:544

C:\Windows\SysWOW64\timeout.exe
timeout /t 5
4⤵
- Delays execution with timeout.exe
PID:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

\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
memory/284-0-0x00000000012C0000-0x0000000001566000-memory.dmp

Filesize
2.6MB

Download
memory/284-1-0x000007FEF5BA0000-0x000007FEF658C000-memory.dmp

Filesize
9.9MB

Download
memory/284-2-0x000000001B2C0000-0x000000001B340000-memory.dmp

Filesize
512KB

Download
memory/284-13-0x000007FEF5BA0000-0x000007FEF658C000-memory.dmp

Filesize
9.9MB

Download
memory/1124-10-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1124-7-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1124-3-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1124-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1124-12-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1124-4-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1124-8-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1124-14-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1124-15-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1124-6-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1124-5-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1124-52-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads