gurcu | 41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4

Resubmissions

10-04-2024 02:25

240410-cwlljsbh99 10

10-04-2024 02:25

10-04-2024 02:25

10-04-2024 02:25

14-10-2023 04:25

Analysis

max time kernel
190s
max time network
1810s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10-04-2024 02:25

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General

Target

Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Size

289KB
MD5

88cfc2ccc0575567122d1d233f9eb1c3
SHA1

4be67d0d801197f88c14d62f4495f17e89fc471f
SHA256

41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4
SHA512

a2dd9ab7a2fe2a6d596c78394f65956f3e8973940229b305e2d763be69ff9f27b1450b5e08ca57cd0886a873fb663daad20ca94d9262a6c80a582dfc5f2e42b7
SSDEEP

6144:uHClm6SWPoK5Z0EwVSmRPQp+L5v9bbSUpi:uHCnZxb8hLLSUpi

Score

10^/10

gurcu collection discovery spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot6176004110:AAFKA5be4dMwA848HWxzYIzrzzOGIHMOJGc/sendMessage?chat_id=615133582

Signatures

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

Checks computer location settings 2 TTPs 5 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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Executes dropped EXE 8 IoCs

pid	Process
4644	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
2580	tor.exe
1192	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1576	tor.exe
4856	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
416	tor.exe
3892	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1944	tor.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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

Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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
42	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
1516	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3332	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4644	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1204	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	4644	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	1192	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	4856	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	3892	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 4856	1204	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	88
PID 1204 wrote to memory of 4856	1204	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	88
PID 4856 wrote to memory of 4340	4856	cmd.exe	90
PID 4856 wrote to memory of 4340	4856	cmd.exe	90
PID 4856 wrote to memory of 3332	4856	cmd.exe	91
PID 4856 wrote to memory of 3332	4856	cmd.exe	91
PID 4856 wrote to memory of 1516	4856	cmd.exe	93
PID 4856 wrote to memory of 1516	4856	cmd.exe	93
PID 4856 wrote to memory of 4644	4856	cmd.exe	94
PID 4856 wrote to memory of 4644	4856	cmd.exe	94
PID 4644 wrote to memory of 4612	4644	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	99
PID 4644 wrote to memory of 4612	4644	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	99
PID 4644 wrote to memory of 2580	4644	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	101
PID 4644 wrote to memory of 2580	4644	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	101
PID 1192 wrote to memory of 1576	1192	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	108
PID 1192 wrote to memory of 1576	1192	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	108
PID 4856 wrote to memory of 416	4856	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	114
PID 4856 wrote to memory of 416	4856	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	114
PID 3892 wrote to memory of 1944	3892	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	119
PID 3892 wrote to memory of 1944	3892	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	119

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
"C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "Xd2c386a3a6edfe99de10f6ce6b3659c4809a" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" &&START "" "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4856
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:4340
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:3332
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "Xd2c386a3a6edfe99de10f6ce6b3659c4809a" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:1516
- - C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
    "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4644
  - - C:\Windows\System32\tar.exe
      "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmp8E17.tmp" -C "C:\Users\Admin\AppData\Local\xdh16uwiax"
      4⤵
      PID:4612
  - - C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
      "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
      4⤵
      Executes dropped EXE
      PID:2580

C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1192
- C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
  "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:1576

C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
  "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:416

C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3892
- C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
  "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:1944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe.log

Filesize
847B

MD5
3308a84a40841fab7dfec198b3c31af7

SHA1
4e7ab6336c0538be5dd7da529c0265b3b6523083

SHA256
169bc31a8d1666535977ca170d246a463e6531bb21faab6c48cb4269d9d60b2e

SHA512
97521d5fb94efdc836ea2723098a1f26a7589a76af51358eee17292d29c9325baf53ad6b4496c5ca3e208d1c9b9ad6797a370e2ae378072fc68f5d6e8b73b198

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Filesize
289KB

MD5
88cfc2ccc0575567122d1d233f9eb1c3

SHA1
4be67d0d801197f88c14d62f4495f17e89fc471f

SHA256
41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4

SHA512
a2dd9ab7a2fe2a6d596c78394f65956f3e8973940229b305e2d763be69ff9f27b1450b5e08ca57cd0886a873fb663daad20ca94d9262a6c80a582dfc5f2e42b7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8E17.tmp

Filesize
13.3MB

MD5
89d2d5811c1aff539bb355f15f3ddad0

SHA1
5bb3577c25b6d323d927200c48cd184a3e27c873

SHA256
b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12

SHA512
39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\data\cached-microdesc-consensus.tmp

Filesize
2.7MB

MD5
a0db8a87f7b723266c8b04255da46b06

SHA1
4df00ea56d22d88f3d2e005ef66bad5b3ef92ebf

SHA256
60b43cdce0f807f7891521f396f53def34a7d98986dbde0faa2a197189c587f3

SHA512
41b8fc467d11af7ca6a42c7e94d1b8295ab3ae5d6d186b4f378e6e079440520e8324b695da1134beb2bc1697d2491edcc70c1b75ab6fc66b9c1cb2ecbcdb4a7d

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\data\cached-microdescs.new

Filesize
7.1MB

MD5
c17f707ff15f121ff65682fa13696027

SHA1
ed289804d88e4b143db31913c3837d1642ffccc2

SHA256
8ac3e22caa2487ee3692e7f312288aa05137fb0e7bc643ba355354e139f5417b

SHA512
9f804e849fe5c5e191ab04fe654d4fbec9667fff842da07f2ec00acff187fd13969bbf1a2d04e97a01a836238fcfa60437f66f0cfda1e1561801e43b6e51633a

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\host\hostname

Filesize
64B

MD5
10e4dee270ad6d36b4a591f18f3da6ab

SHA1
c05374a913ee6f5a3ef561fbc9fae48b0e613dda

SHA256
5a2c6d4e459bc1a0360a9879004aaa396cee32d8b8a630369dbc30678b1bf394

SHA512
44a26e92c48b066dd9cffd6a233733b9ead2c88ceda758be3de18c2798ee27082d90dd4bccbaff545cfcf29fd2245aeda1016fbbc71bba1b926e59b0c2c8642a

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\port.dat

Filesize
4B

MD5
31c0c178a9fc26ffecffd8670e6d746d

SHA1
c682bad5bf033a6fe24574c00ab59bb6f317a712

SHA256
d5b5fab21d68556e2afbb7131dfc729b65f8cc3efd27115f74a0a0ce0657b3fe

SHA512
4285e45dcef8bf32219de7b3530b40a05d2c49548b7aefae285c959ee0bb6798031c9998421180901b05fec116f4b091d5699bd5e8cd4d38957cce44f03546cc

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt

Filesize
218B

MD5
edd1994703adeea8150ee6f936423394

SHA1
590b55c99ba5744397d6fcd76cbbf2a072bfe19d

SHA256
03af6fe1a9bad7a8b1567826a74b228d9a9dc466f27ffad074f1c7efd0022895

SHA512
f0cc7ef5a823aa2743a395727d990f28790df30f1675a51d6168462ea7727e1d68403de09cbe973bf444207cbd863f9959c2a9ebafb3dbf65cc54a74e0ca5af5

Download Submit
memory/1192-87-0x00000214B24E0000-0x00000214B24F0000-memory.dmp

Filesize
64KB

Download
memory/1192-86-0x00007FF837340000-0x00007FF837E01000-memory.dmp

Filesize
10.8MB

Download
memory/1192-89-0x00007FF837340000-0x00007FF837E01000-memory.dmp

Filesize
10.8MB

Download
memory/1204-2-0x000002297DAC0000-0x000002297DAD0000-memory.dmp

Filesize
64KB

Download
memory/1204-1-0x00007FF838880000-0x00007FF839341000-memory.dmp

Filesize
10.8MB

Download
memory/1204-6-0x00007FF838880000-0x00007FF839341000-memory.dmp

Filesize
10.8MB

Download
memory/1204-0-0x00000229633B0000-0x00000229633FE000-memory.dmp

Filesize
312KB

Download
memory/3892-108-0x00007FF837340000-0x00007FF837E01000-memory.dmp

Filesize
10.8MB

Download
memory/4644-12-0x000001A8D4880000-0x000001A8D4890000-memory.dmp

Filesize
64KB

Download
memory/4644-60-0x00007FF837340000-0x00007FF837E01000-memory.dmp

Filesize
10.8MB

Download
memory/4644-61-0x000001A8D4880000-0x000001A8D4890000-memory.dmp

Filesize
64KB

Download
memory/4644-11-0x00007FF837340000-0x00007FF837E01000-memory.dmp

Filesize
10.8MB

Download
memory/4856-99-0x00007FF837340000-0x00007FF837E01000-memory.dmp

Filesize
10.8MB

Download
memory/4856-100-0x000001E5C62C0000-0x000001E5C62D0000-memory.dmp

Filesize
64KB

Download
memory/4856-102-0x00007FF837340000-0x00007FF837E01000-memory.dmp

Filesize
10.8MB

Download