gurcu | d71329c78c704ee9cc7133761b5e738a315e7eb784e348d7743a8a7366724e9f

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 collection spyware stealer

Malware Config

Extracted

Family

gurcu

C2

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

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
204	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
2596	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.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-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Key opened	\REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Key opened	\REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Key opened	\REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Key opened	\REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Key opened	\REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.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
60	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
3588	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
428	PING.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2872	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Token: SeDebugPrivilege	204	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Token: SeDebugPrivilege	2596	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2336	2872	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe	73
PID 2872 wrote to memory of 2336	2872	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe	73
PID 2336 wrote to memory of 2700	2336	cmd.exe	75
PID 2336 wrote to memory of 2700	2336	cmd.exe	75
PID 2336 wrote to memory of 428	2336	cmd.exe	76
PID 2336 wrote to memory of 428	2336	cmd.exe	76
PID 2336 wrote to memory of 3588	2336	cmd.exe	77
PID 2336 wrote to memory of 3588	2336	cmd.exe	77
PID 2336 wrote to memory of 204	2336	cmd.exe	78
PID 2336 wrote to memory of 204	2336	cmd.exe	78

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-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe

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:2872
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2700
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:428
- - 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:3588
- - C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
    "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious use of AdjustPrivilegeToken
    PID:204

C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
1⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2596

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe.log

Filesize
847B

MD5
a908a7c6e93edeb3e400780b6fe62dde

SHA1
36e2b437f41443f6b41b45b35a0f97b2cd94123d

SHA256
cae801b0499949178298c1c1a083f7c0febb971d262be9c9588437af66c76ef0

SHA512
deb437dcb1440d37bcd61dfa43be05fd01856a1d1e59aa5b2dfa142e9ae584b0577eea024edb99d8e74e3a1b606bb7ae3b4f9cd8eb30813e67dda678b9319cbe

Download Submit
C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe

Filesize
339KB

MD5
1cab66a5c15f97f040fb23d354d04a9c

SHA1
f0dbebd22b2c7bfedbefa4435b345c58416f9448

SHA256
d71329c78c704ee9cc7133761b5e738a315e7eb784e348d7743a8a7366724e9f

SHA512
a5508a75a0a7c747cc50fe8284b9097e1cb9ae83bd7e80553ffa875a6d07d6eec7fc18f66a0a328aa0614c26642d884bfe152e6c09a11eeb0d64f6be66064eab

Download Submit
C:\Users\Admin\AppData\Local\lcybndk48g\port.dat

Filesize
4B

MD5
007d4a1214289aea09b9759ae1324e96

SHA1
8856067cf691809f0744ce9ecb0ea5a043439c79

SHA256
c84344c3f5441a6b02fc44c34244b9749c016f6a741499f3204def0f523a6a36

SHA512
e106c1b4bddec8f639860db7681174da40ca153e6f12d2f7ea85d26d80a13de074d89e78787a8a859dd3eb4b369cde179aabe5dc9594c5c63ba2fd1e92928ac6

Download Submit
memory/204-16-0x0000017018B00000-0x0000017018B10000-memory.dmp

Filesize
64KB

Download
memory/204-11-0x00007FFC02D80000-0x00007FFC0376C000-memory.dmp

Filesize
9.9MB

Download
memory/204-12-0x0000017018B00000-0x0000017018B10000-memory.dmp

Filesize
64KB

Download
memory/204-15-0x00007FFC02D80000-0x00007FFC0376C000-memory.dmp

Filesize
9.9MB

Download
memory/2596-18-0x00007FFC02D80000-0x00007FFC0376C000-memory.dmp

Filesize
9.9MB

Download
memory/2596-19-0x0000022692480000-0x0000022692490000-memory.dmp

Filesize
64KB

Download
memory/2596-22-0x00007FFC02D80000-0x00007FFC0376C000-memory.dmp

Filesize
9.9MB

Download
memory/2596-23-0x0000022692480000-0x0000022692490000-memory.dmp

Filesize
64KB

Download
memory/2872-6-0x00007FFC02D80000-0x00007FFC0376C000-memory.dmp

Filesize
9.9MB

Download
memory/2872-2-0x0000024D22F40000-0x0000024D22F50000-memory.dmp

Filesize
64KB

Download
memory/2872-0-0x0000024D08810000-0x0000024D0886C000-memory.dmp

Filesize
368KB

Download
memory/2872-1-0x00007FFC02D80000-0x00007FFC0376C000-memory.dmp

Filesize
9.9MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads