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
29s
max time network
59s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-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 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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Executes dropped EXE 4 IoCs

pid	Process
2704	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
5016	tor.exe
2080	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
4344	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 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Software\Microsoft\Office\16.0\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
56	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
4976	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1684	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2704	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
2704	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3228	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	2704	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	2080	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3228 wrote to memory of 3784	3228	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	94
PID 3228 wrote to memory of 3784	3228	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	94
PID 3784 wrote to memory of 4260	3784	cmd.exe	96
PID 3784 wrote to memory of 4260	3784	cmd.exe	96
PID 3784 wrote to memory of 1684	3784	cmd.exe	97
PID 3784 wrote to memory of 1684	3784	cmd.exe	97
PID 3784 wrote to memory of 4976	3784	cmd.exe	101
PID 3784 wrote to memory of 4976	3784	cmd.exe	101
PID 3784 wrote to memory of 2704	3784	cmd.exe	103
PID 3784 wrote to memory of 2704	3784	cmd.exe	103
PID 2704 wrote to memory of 1676	2704	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	105
PID 2704 wrote to memory of 1676	2704	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	105
PID 2704 wrote to memory of 5016	2704	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	110
PID 2704 wrote to memory of 5016	2704	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	110
PID 2080 wrote to memory of 4344	2080	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	118
PID 2080 wrote to memory of 4344	2080	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	118

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-1-5-21-817259280-2658881748-983986378-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\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:3228
- 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:3784
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:4260
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:1684
- - 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:4976
- - 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
    - outlook_office_path
    - outlook_win_path
    PID:2704
  - - C:\Windows\System32\tar.exe
      "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmp89C1.tmp" -C "C:\Users\Admin\AppData\Local\xdh16uwiax"
      4⤵
      PID:1676
  - - 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:5016

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:2080
- 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:4344

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\tmp89C1.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
814f8cba43d923834b0d0027591e52bf

SHA1
2814b4faa0221b252164fbf9586051c07faa050f

SHA256
406d96a4788b07a0c4bda0e289d04472bc92a13f3b5b51e7478d095986735597

SHA512
45d866ec699d731eb7a50669bfa2fb469652b92d92b4546d373777192bff9d2201095ec9e13079ff422b4a7a15175142aa7d2abb57aaf4262b3e837340677069

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

Filesize
5.8MB

MD5
5223b3619ab2a2c9161c430b622b0272

SHA1
83f7cb409414e4a18ee6516fdcadce22859c4862

SHA256
59aa904b5c068d9e6e747037caa43c70e244493a6e44bee2aee69b6ff4089524

SHA512
81890db0458f058def8cff6e859f8d6bd37837610372b360c324cf50dd4061fbef3beb1a7291fd9721aa32f7e074b6cd223c8dfe46a6766ab63a74f9f8ef3b86

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

Filesize
64B

MD5
e83d0851fd02e685ecd7f2f246f441ee

SHA1
0594d21c863c993089e396097272f9eced7391ae

SHA256
64b259a94d6607d48dd44915b1ce259616adc989a12595fab2951f262dfbf814

SHA512
a458809d9fb8e93930878ecb7439e676efac8680b89a05291adc8b04a9f4c3f993e8f2369de7a162db8bacb0a31408db2ceb1548a969400bb23886f8f2edefbe

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

Filesize
4B

MD5
9b1c93a6864c39e48417ee486b83c387

SHA1
1e11402bb8df073eb04132d0b4f12fcaf5836b35

SHA256
64f363361a0acc78ce6d9e6240ca840dfc9a338bab1a2fcb7c6270baf81b1f86

SHA512
5a4d2f53e956c15fa8add765b7b279a020482d4744560bfe5aafe9017e9867a2eb119baa83c076a9cc8a681e44f72938cbbddb4531b027859d4c8ab8be445565

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
78f891c813fe8572fc75fc16521f7abe

SHA1
d5bce71d2fa4e964dbdbcd9e5d4373a4e099fbe6

SHA256
bbed8d8933d21af897fd14ed793d1c161af8330ca4c63434194cb0d82be5c2d0

SHA512
0ded656909fa5c99964f4153c3fa621267191fa8c6a986d63ddaf96947c2b3a363d920c78a00a3cef0fd4463ed711621b80fcb9c5aa6f9b79f3f515ed306aa74

Download Submit
memory/2080-74-0x00007FF9F5850000-0x00007FF9F6311000-memory.dmp

Filesize
10.8MB

Download
memory/2080-75-0x0000020CDF5E0000-0x0000020CDF5F0000-memory.dmp

Filesize
64KB

Download
memory/2704-12-0x000001C07AAD0000-0x000001C07AAE0000-memory.dmp

Filesize
64KB

Download
memory/2704-11-0x00007FF9F5850000-0x00007FF9F6311000-memory.dmp

Filesize
10.8MB

Download
memory/2704-73-0x00007FF9F5850000-0x00007FF9F6311000-memory.dmp

Filesize
10.8MB

Download
memory/3228-0-0x000002199C150000-0x000002199C19E000-memory.dmp

Filesize
312KB

Download
memory/3228-6-0x00007FF9F63A0000-0x00007FF9F6E61000-memory.dmp

Filesize
10.8MB

Download
memory/3228-1-0x00007FF9F63A0000-0x00007FF9F6E61000-memory.dmp

Filesize
10.8MB

Download
memory/3228-2-0x000002199C5A0000-0x000002199C5B0000-memory.dmp

Filesize
64KB

Download