milleniumrat | e3f5c557ece7ec27cb7e4a26482eadf0d9065065d94b2919f9b881bc74800e6e

Analysis

max time kernel
47s
max time network
50s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
28-05-2024 14:55

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General

Target

main.exe
Size

5.6MB
MD5

5df3e2c717f267899f37ec6e8fc7f47a
SHA1

5e980079f67215bf69b8c1c16b56f40bf4a29958
SHA256

e3f5c557ece7ec27cb7e4a26482eadf0d9065065d94b2919f9b881bc74800e6e
SHA512

8cef1184120e010421d69fcf271822b3f0b45e34a1565152a3f2decb8f500d0e69de9816d9075683fcfb0f431713f3fbc42ac2d87503cdcdde125aba3fa1635d
SSDEEP

98304:nsl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6UcR65:nPOuK6mn9NzgMoYkSIvUcwti7TQlvciN

Score

10^/10

milleniumrat persistence rat spyware stealer

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1344	Update.exe

Loads dropped DLL 2 IoCs

pid	Process
1844	main.exe
1344	Update.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
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\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

T1102

flow	ioc
3	raw.githubusercontent.com
5	raw.githubusercontent.com
8	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
1	ip-api.com

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

T1012

System Information Discovery

T1082

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

evasion

pid	Process
1060	timeout.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
164	tasklist.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
4124	reg.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1844	main.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe
1344	Update.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1844	main.exe
Token: SeDebugPrivilege	164	tasklist.exe
Token: SeDebugPrivilege	1344	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1344	Update.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1844 wrote to memory of 4912	1844	main.exe	76
PID 1844 wrote to memory of 4912	1844	main.exe	76
PID 4912 wrote to memory of 164	4912	cmd.exe	78
PID 4912 wrote to memory of 164	4912	cmd.exe	78
PID 4912 wrote to memory of 764	4912	cmd.exe	79
PID 4912 wrote to memory of 764	4912	cmd.exe	79
PID 4912 wrote to memory of 1060	4912	cmd.exe	80
PID 4912 wrote to memory of 1060	4912	cmd.exe	80
PID 4912 wrote to memory of 1344	4912	cmd.exe	81
PID 4912 wrote to memory of 1344	4912	cmd.exe	81
PID 1344 wrote to memory of 3592	1344	Update.exe	82
PID 1344 wrote to memory of 3592	1344	Update.exe	82
PID 3592 wrote to memory of 4124	3592	cmd.exe	84
PID 3592 wrote to memory of 4124	3592	cmd.exe	84

C:\Users\Admin\AppData\Local\Temp\main.exe
"C:\Users\Admin\AppData\Local\Temp\main.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1844
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp8E55.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp8E55.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4912
- - C:\Windows\system32\tasklist.exe
    Tasklist /fi "PID eq 1844"
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:164
- - C:\Windows\system32\find.exe
    find ":"
    3⤵
    PID:764
- - C:\Windows\system32\timeout.exe
    Timeout /T 1 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:1060
- - 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:1344
  - - 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:3592
    - - 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:4124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Process Discovery

T1057

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8E55.tmp.bat

Filesize
256B

MD5
5dea158de2147f608e501c76c92bdb7f

SHA1
230a6b3534c1e798e64be3fe08181cc40cd857db

SHA256
bb796869b5a457c05bd41c87bef6ac007f43d39fb0a0bfafd5aaf1b88c8dfd1a

SHA512
405ae1d235f2912cda6d3ad55c91c7df1cdcef1f83a313754fc8614aa85774d3f02b77140d6acb9fa516f8121e402999cd8b68fd5fa4882a731abd918b0223fd

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

Filesize
5.6MB

MD5
5df3e2c717f267899f37ec6e8fc7f47a

SHA1
5e980079f67215bf69b8c1c16b56f40bf4a29958

SHA256
e3f5c557ece7ec27cb7e4a26482eadf0d9065065d94b2919f9b881bc74800e6e

SHA512
8cef1184120e010421d69fcf271822b3f0b45e34a1565152a3f2decb8f500d0e69de9816d9075683fcfb0f431713f3fbc42ac2d87503cdcdde125aba3fa1635d

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/1344-31-0x00000227A1300000-0x00000227A1312000-memory.dmp

Filesize
72KB

Download
memory/1344-24-0x00000227A1240000-0x00000227A1265000-memory.dmp

Filesize
148KB

Download
memory/1344-23-0x00000227A1280000-0x00000227A12BA000-memory.dmp

Filesize
232KB

Download
memory/1344-20-0x00000227A11D0000-0x00000227A123A000-memory.dmp

Filesize
424KB

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memory/1344-19-0x00000227A1150000-0x00000227A115A000-memory.dmp

Filesize
40KB

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memory/1844-6-0x000001BFB8FD0000-0x000001BFB9046000-memory.dmp

Filesize
472KB

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memory/1844-12-0x00007FF831840000-0x00007FF83222C000-memory.dmp

Filesize
9.9MB

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memory/1844-8-0x000001BFA0880000-0x000001BFA089E000-memory.dmp

Filesize
120KB

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memory/1844-7-0x00007FF831840000-0x00007FF83222C000-memory.dmp

Filesize
9.9MB

Download
memory/1844-0-0x000001BF9E610000-0x000001BF9EBB0000-memory.dmp

Filesize
5.6MB

Download
memory/1844-1-0x00007FF831843000-0x00007FF831844000-memory.dmp

Filesize
4KB

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