gurcu | dba8f020ac6d09728422932492657fea3f0a95754cd279f5a949b6982bd32129

Resubmissions

10-04-2024 02:52

240410-dcqxlaff2v 10

10-04-2024 02:52

10-04-2024 02:51

10-04-2024 02:51

14-10-2023 04:10

Analysis

max time kernel
7s
max time network
255s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
10-04-2024 02:51

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General

Target

f21559ac7c67d871d4f05.exe
Size

327KB
MD5

78fd6df30f791c7b5f45dca0b4c952a5
SHA1

d977ca82da0850eb5d4e69c9c657d1a41fb9c44d
SHA256

dba8f020ac6d09728422932492657fea3f0a95754cd279f5a949b6982bd32129
SHA512

abf0efb2412c522fbb7f6725a548e8d6a8bc045801a4dd8652a544a1527b99647140ad4843c41a6b00a728a5d8361c7e2ea80eba8ee3b291238729277dad228d
SSDEEP

6144:Vc6sWfGY/yODx332tOIXlU1QWZxXAnuHW9bbGDwVdqe1mM:Ps+CXIAuGG8dA

Score

10^/10

gurcu spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot5968091729:AAHVag_ncx5c5AIYERGTqv9kr7clJT1_HDU/sendMessage?chat_id=-1001962300376

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2612	f21559ac7c67d871d4f05.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
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
4512	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4424	PING.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	828	f21559ac7c67d871d4f05.exe
Token: SeDebugPrivilege	2612	f21559ac7c67d871d4f05.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 828 wrote to memory of 380	828	f21559ac7c67d871d4f05.exe	73
PID 828 wrote to memory of 380	828	f21559ac7c67d871d4f05.exe	73
PID 380 wrote to memory of 4500	380	cmd.exe	75
PID 380 wrote to memory of 4500	380	cmd.exe	75
PID 380 wrote to memory of 4424	380	cmd.exe	76
PID 380 wrote to memory of 4424	380	cmd.exe	76
PID 380 wrote to memory of 4512	380	cmd.exe	77
PID 380 wrote to memory of 4512	380	cmd.exe	77
PID 380 wrote to memory of 2612	380	cmd.exe	78
PID 380 wrote to memory of 2612	380	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

C:\Users\Admin\AppData\Local\Temp\f21559ac7c67d871d4f05.exe
"C:\Users\Admin\AppData\Local\Temp\f21559ac7c67d871d4f05.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:828
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "f21559ac7c67d871d4f05" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\f21559ac7c67d871d4f05.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\f21559ac7c67d871d4f05.exe" &&START "" "C:\Users\Admin\AppData\Local\Nvidia\f21559ac7c67d871d4f05.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:380
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:4500
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:4424
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "f21559ac7c67d871d4f05" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\f21559ac7c67d871d4f05.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:4512
- - C:\Users\Admin\AppData\Local\Nvidia\f21559ac7c67d871d4f05.exe
    "C:\Users\Admin\AppData\Local\Nvidia\f21559ac7c67d871d4f05.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2612

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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\f21559ac7c67d871d4f05.exe.log

Filesize
847B

MD5
a908a7c6e93edeb3e400780b6fe62dde

SHA1
36e2b437f41443f6b41b45b35a0f97b2cd94123d

SHA256
cae801b0499949178298c1c1a083f7c0febb971d262be9c9588437af66c76ef0

SHA512
deb437dcb1440d37bcd61dfa43be05fd01856a1d1e59aa5b2dfa142e9ae584b0577eea024edb99d8e74e3a1b606bb7ae3b4f9cd8eb30813e67dda678b9319cbe

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\f21559ac7c67d871d4f05.exe

Filesize
327KB

MD5
78fd6df30f791c7b5f45dca0b4c952a5

SHA1
d977ca82da0850eb5d4e69c9c657d1a41fb9c44d

SHA256
dba8f020ac6d09728422932492657fea3f0a95754cd279f5a949b6982bd32129

SHA512
abf0efb2412c522fbb7f6725a548e8d6a8bc045801a4dd8652a544a1527b99647140ad4843c41a6b00a728a5d8361c7e2ea80eba8ee3b291238729277dad228d

Download Submit
memory/828-0-0x0000026758F60000-0x0000026758FB8000-memory.dmp

Filesize
352KB

Download
memory/828-1-0x00007FF9F4A60000-0x00007FF9F544C000-memory.dmp

Filesize
9.9MB

Download
memory/828-2-0x0000026773470000-0x0000026773480000-memory.dmp

Filesize
64KB

Download
memory/828-6-0x00007FF9F4A60000-0x00007FF9F544C000-memory.dmp

Filesize
9.9MB

Download
memory/2612-11-0x00007FF9F4A60000-0x00007FF9F544C000-memory.dmp

Filesize
9.9MB

Download
memory/2612-12-0x0000017A5F7A0000-0x0000017A5F7B0000-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