milleniumrat | e0338c845a876d585eceb084311e84f3becd6fa6f0851567ba2c5f00eeaf4ecf | Triage

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-11-2024 11:30

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General

Target

Update.exe
Size

5.6MB
MD5

3d3c49dd5d13a242b436e0a065cd6837
SHA1

e38a773ffa08452c449ca5a880d89cfad24b6f1b
SHA256

e0338c845a876d585eceb084311e84f3becd6fa6f0851567ba2c5f00eeaf4ecf
SHA512

dd0e590310392b0543d47a2d24d55f6f091ba59acc0d7ea533039ffb48f1b8938587889bcfa19b0538a62ba26fcde2172253860ceab34af40fd7bf65b6587b00
SSDEEP

98304:nsl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6UcR6s:nPOuK6mn9NzgMoYkSIvUcwti7TQlvciY

Score

10^/10

milleniumrat discovery persistence rat spyware stealer

Malware Config

Signatures

MilleniumRat
MilleniumRat is a remote access trojan written in C#.
rat stealer milleniumrat
Milleniumrat family
milleniumrat

Executes dropped EXE 1 IoCs

pid	Process
2312	Update.exe

Loads dropped DLL 2 IoCs

pid	Process
1732	Update.exe
2312	Update.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\ChromeUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\GoogleChromeUpdateLog\\Update.exe"	reg.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

flow	ioc
6	raw.githubusercontent.com
7	raw.githubusercontent.com
10	raw.githubusercontent.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

pid	Process
2876	tasklist.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Update.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Update.exe

Delays execution with timeout.exe 1 IoCs

pid	Process
2740	timeout.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

pid	Process
2188	reg.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1732	Update.exe
1732	Update.exe
1732	Update.exe
2312	Update.exe
2312	Update.exe
2312	Update.exe
2312	Update.exe
2312	Update.exe
2312	Update.exe
2312	Update.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1732	Update.exe
Token: SeDebugPrivilege	2876	tasklist.exe
Token: SeDebugPrivilege	2312	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2312	Update.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 2720	1732	Update.exe	31
PID 1732 wrote to memory of 2720	1732	Update.exe	31
PID 1732 wrote to memory of 2720	1732	Update.exe	31
PID 2720 wrote to memory of 2876	2720	cmd.exe	33
PID 2720 wrote to memory of 2876	2720	cmd.exe	33
PID 2720 wrote to memory of 2876	2720	cmd.exe	33
PID 2720 wrote to memory of 2888	2720	cmd.exe	34
PID 2720 wrote to memory of 2888	2720	cmd.exe	34
PID 2720 wrote to memory of 2888	2720	cmd.exe	34
PID 2720 wrote to memory of 2740	2720	cmd.exe	35
PID 2720 wrote to memory of 2740	2720	cmd.exe	35
PID 2720 wrote to memory of 2740	2720	cmd.exe	35
PID 2720 wrote to memory of 2312	2720	cmd.exe	36
PID 2720 wrote to memory of 2312	2720	cmd.exe	36
PID 2720 wrote to memory of 2312	2720	cmd.exe	36
PID 2312 wrote to memory of 2908	2312	Update.exe	38
PID 2312 wrote to memory of 2908	2312	Update.exe	38
PID 2312 wrote to memory of 2908	2312	Update.exe	38
PID 2908 wrote to memory of 2188	2908	cmd.exe	40
PID 2908 wrote to memory of 2188	2908	cmd.exe	40
PID 2908 wrote to memory of 2188	2908	cmd.exe	40
PID 2312 wrote to memory of 2600	2312	Update.exe	41
PID 2312 wrote to memory of 2600	2312	Update.exe	41
PID 2312 wrote to memory of 2600	2312	Update.exe	41

C:\Users\Admin\AppData\Local\Temp\Update.exe
"C:\Users\Admin\AppData\Local\Temp\Update.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpCEC4.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpCEC4.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Windows\system32\tasklist.exe
    Tasklist /fi "PID eq 1732"
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:2876
- - C:\Windows\system32\find.exe
    find ":"
    3⤵
    PID:2888
- - C:\Windows\system32\timeout.exe
    Timeout /T 1 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2740
- - C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe
    "C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2312
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v ChromeUpdate /t REG_SZ /d C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2908
    - - C:\Windows\system32\reg.exe
        
        reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v ChromeUpdate /t REG_SZ /d C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe /f
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:2188
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2312 -s 1828
      4⤵
      PID:2600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

Credential Access

Credentials from Password Stores

Credentials from Web Browsers

Unsecured Credentials

Credentials In Files

Discovery

Browser Information Discovery

Process Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Web Service

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCEC4.tmp.bat

Filesize
256B

MD5
908ee73c85453eab2c4983049b2aafa6

SHA1
4e8700dbfaa4cf33c1950b768d73dede15c8b0d6

SHA256
f5e62a21cde4b154ab54b7c068ccc6a7745f1265eb2fe28848c8944821b834d8

SHA512
230b3e0af4e951f5bb95c2fdfff2df2d6295b50068dfc57a8eb65c43040621ec710053a81b29d36773c543de4e5d9a2d6d785541a19599ca8e65aa64b9c1c58a

Download Submit
C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe

Filesize
5.6MB

MD5
3d3c49dd5d13a242b436e0a065cd6837

SHA1
e38a773ffa08452c449ca5a880d89cfad24b6f1b

SHA256
e0338c845a876d585eceb084311e84f3becd6fa6f0851567ba2c5f00eeaf4ecf

SHA512
dd0e590310392b0543d47a2d24d55f6f091ba59acc0d7ea533039ffb48f1b8938587889bcfa19b0538a62ba26fcde2172253860ceab34af40fd7bf65b6587b00

Download Submit
\Users\Admin\AppData\Local\Temp\Costura\A54E036D2DCD19384E8EA53862E0DD8F\64\sqlite.interop.dll

Filesize
1.7MB

MD5
65ccd6ecb99899083d43f7c24eb8f869

SHA1
27037a9470cc5ed177c0b6688495f3a51996a023

SHA256
aba67c7e6c01856838b8bc6b0ba95e864e1fdcb3750aa7cdc1bc73511cea6fe4

SHA512
533900861fe36cf78b614d6a7ce741ff1172b41cbd5644b4a9542e6ca42702e6fbfb12f0fbaae8f5992320870a15e90b4f7bf180705fc9839db433413860be6d

Download Submit
memory/1732-0-0x000007FEF4FD3000-0x000007FEF4FD4000-memory.dmp

Filesize
4KB

Download
memory/1732-1-0x0000000000C00000-0x00000000011A0000-memory.dmp

Filesize
5.6MB

Download
memory/1732-6-0x000007FEF4FD0000-0x000007FEF59BC000-memory.dmp

Filesize
9.9MB

Download
memory/1732-9-0x000007FEF4FD0000-0x000007FEF59BC000-memory.dmp

Filesize
9.9MB

Download
memory/2312-14-0x00000000010E0000-0x0000000001680000-memory.dmp

Filesize
5.6MB

Download
memory/2312-17-0x000000001B3C0000-0x000000001B42A000-memory.dmp

Filesize
424KB

Download
memory/2312-20-0x0000000000810000-0x0000000000835000-memory.dmp

Filesize
148KB

Download