gurcu | 446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

General

Target

446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
Size

344KB
MD5

aec814bf30dd191b641feef457a718ce
SHA1

96c2bea5b416d10a2dae60acd2b7f9c7cebb8115
SHA256

446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89
SHA512

fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0
SSDEEP

6144:SXRrO+JguvyIs1DkhmgPZw6JXAL5+9bbYZQ4:ir/9m3cYZQ

Score

10^/10

gurcu collection spyware stealer

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot6202531839:AAHT41T-v1F7LRPMrYNhW3IEdF7Ab7I7uTM/sendMessage?chat_id=-1001903439899

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
748	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
4672	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.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-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
Key opened	\REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
Key opened	\REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
Key opened	\REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
Key opened	\REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
Key opened	\REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe

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
22	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
664	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
308	PING.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
Token: SeDebugPrivilege	748	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
Token: SeDebugPrivilege	4672	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 4912	1900	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe	74
PID 1900 wrote to memory of 4912	1900	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe	74
PID 4912 wrote to memory of 216	4912	cmd.exe	76
PID 4912 wrote to memory of 216	4912	cmd.exe	76
PID 4912 wrote to memory of 308	4912	cmd.exe	77
PID 4912 wrote to memory of 308	4912	cmd.exe	77
PID 4912 wrote to memory of 664	4912	cmd.exe	78
PID 4912 wrote to memory of 664	4912	cmd.exe	78
PID 4912 wrote to memory of 748	4912	cmd.exe	79
PID 4912 wrote to memory of 748	4912	cmd.exe	79

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-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe

C:\Users\Admin\AppData\Local\Temp\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
"C:\Users\Admin\AppData\Local\Temp\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe" &&START "" "C:\Users\Admin\AppData\Local\Nvidia\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4912
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:216
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:308
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:664
- - C:\Users\Admin\AppData\Local\Nvidia\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
    "C:\Users\Admin\AppData\Local\Nvidia\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious use of AdjustPrivilegeToken
    PID:748

C:\Users\Admin\AppData\Local\Nvidia\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
C:\Users\Admin\AppData\Local\Nvidia\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe
1⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

1

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\8lxyt4fm8n\port.dat

Filesize
4B

MD5
a8345c3bb9e3896ea538ce77ffaf2c20

SHA1
bcf06593eb08b05b503a29a24a12e3acfc7540c8

SHA256
48edac0718a29c1157a2e5f12944c2b7205e6b7be4d80cb5b731255a756f8df4

SHA512
5672170282b5919c223f5010a061485a3eb8aabfe7085525d672f8eabe02708ff62bacb46c359b6d0a2fed758558bcaa8d3762f6a702a84a817d51ee68505a02

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe.log

Filesize
847B

MD5
a908a7c6e93edeb3e400780b6fe62dde

SHA1
36e2b437f41443f6b41b45b35a0f97b2cd94123d

SHA256
cae801b0499949178298c1c1a083f7c0febb971d262be9c9588437af66c76ef0

SHA512
deb437dcb1440d37bcd61dfa43be05fd01856a1d1e59aa5b2dfa142e9ae584b0577eea024edb99d8e74e3a1b606bb7ae3b4f9cd8eb30813e67dda678b9319cbe

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89.exe

Filesize
344KB

MD5
aec814bf30dd191b641feef457a718ce

SHA1
96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

SHA256
446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

SHA512
fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

Download Submit
memory/748-17-0x000001D1EFD70000-0x000001D1EFD80000-memory.dmp

Filesize
64KB

Download
memory/748-12-0x00007FFC77060000-0x00007FFC77A4C000-memory.dmp

Filesize
9.9MB

Download
memory/748-13-0x000001D1EFD70000-0x000001D1EFD80000-memory.dmp

Filesize
64KB

Download
memory/748-16-0x00007FFC77060000-0x00007FFC77A4C000-memory.dmp

Filesize
9.9MB

Download
memory/1900-6-0x00007FFC76190000-0x00007FFC76B7C000-memory.dmp

Filesize
9.9MB

Download
memory/1900-3-0x0000025DB8140000-0x0000025DB8150000-memory.dmp

Filesize
64KB

Download
memory/1900-0-0x0000025DB7CA0000-0x0000025DB7CFC000-memory.dmp

Filesize
368KB

Download
memory/1900-1-0x00007FFC76190000-0x00007FFC76B7C000-memory.dmp

Filesize
9.9MB

Download
memory/4672-19-0x00007FFC77060000-0x00007FFC77A4C000-memory.dmp

Filesize
9.9MB

Download
memory/4672-20-0x000001F55F0B0000-0x000001F55F0C0000-memory.dmp

Filesize
64KB

Download
memory/4672-23-0x00007FFC77060000-0x00007FFC77A4C000-memory.dmp

Filesize
9.9MB

Download
memory/4672-24-0x000001F55F0B0000-0x000001F55F0C0000-memory.dmp

Filesize
64KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads