gurcu | 2869db18f346049bcc9e378a77ed809fd9caad2fd2bd4d9f58d6e728c784b3eb

General

Target

f19126b02be0b331982e041dc9bcad51.exe
Size

223KB
MD5

f19126b02be0b331982e041dc9bcad51
SHA1

10ab04a6f24ce4540a564041375d8275a691e409
SHA256

2869db18f346049bcc9e378a77ed809fd9caad2fd2bd4d9f58d6e728c784b3eb
SHA512

e6158c6c1563ff3f013b97c0b5da7b5f3301657b948ddb1198ebaea7ce5fc3a9c9f3f449646f45c070514e8796e6315a2afaab7894ba20e3b857a5dc504d093c
SSDEEP

3072:fvfoUJQCw+d+Uoj9DVbDWb0Cdfc6mdSCFytxpNS17e+8TNBfxz9l:fvfoOQHelqJbD4HJe7FytVSle+8TxX

Score

10^/10

gurcu stealer

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot5975822207:AAFJtzAlzLoF8RfkpKUagQJGRi0ksib6w3g/sendMessage?chat_id=1396661331

Signatures

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

Deletes itself 1 IoCs

pid	Process
1684	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
1508	f19126b02be0b331982e041dc9bcad51.exe
1824	f19126b02be0b331982e041dc9bcad51.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
812	1508	WerFault.exe	34
1832	1824	WerFault.exe	37

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

T1053

pid	Process
324	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1812	PING.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1204	f19126b02be0b331982e041dc9bcad51.exe
Token: SeDebugPrivilege	1508	f19126b02be0b331982e041dc9bcad51.exe
Token: SeDebugPrivilege	1824	f19126b02be0b331982e041dc9bcad51.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 1684	1204	f19126b02be0b331982e041dc9bcad51.exe	29
PID 1204 wrote to memory of 1684	1204	f19126b02be0b331982e041dc9bcad51.exe	29
PID 1204 wrote to memory of 1684	1204	f19126b02be0b331982e041dc9bcad51.exe	29
PID 1684 wrote to memory of 988	1684	cmd.exe	31
PID 1684 wrote to memory of 988	1684	cmd.exe	31
PID 1684 wrote to memory of 988	1684	cmd.exe	31
PID 1684 wrote to memory of 1812	1684	cmd.exe	32
PID 1684 wrote to memory of 1812	1684	cmd.exe	32
PID 1684 wrote to memory of 1812	1684	cmd.exe	32
PID 1684 wrote to memory of 324	1684	cmd.exe	33
PID 1684 wrote to memory of 324	1684	cmd.exe	33
PID 1684 wrote to memory of 324	1684	cmd.exe	33
PID 1684 wrote to memory of 1508	1684	cmd.exe	34
PID 1684 wrote to memory of 1508	1684	cmd.exe	34
PID 1684 wrote to memory of 1508	1684	cmd.exe	34
PID 1508 wrote to memory of 812	1508	f19126b02be0b331982e041dc9bcad51.exe	35
PID 1508 wrote to memory of 812	1508	f19126b02be0b331982e041dc9bcad51.exe	35
PID 1508 wrote to memory of 812	1508	f19126b02be0b331982e041dc9bcad51.exe	35
PID 1964 wrote to memory of 1824	1964	taskeng.exe	37
PID 1964 wrote to memory of 1824	1964	taskeng.exe	37
PID 1964 wrote to memory of 1824	1964	taskeng.exe	37
PID 1824 wrote to memory of 1832	1824	f19126b02be0b331982e041dc9bcad51.exe	38
PID 1824 wrote to memory of 1832	1824	f19126b02be0b331982e041dc9bcad51.exe	38
PID 1824 wrote to memory of 1832	1824	f19126b02be0b331982e041dc9bcad51.exe	38

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\f19126b02be0b331982e041dc9bcad51.exe
"C:\Users\Admin\AppData\Local\Temp\f19126b02be0b331982e041dc9bcad51.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "f19126b02be0b331982e041dc9bcad51" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\f19126b02be0b331982e041dc9bcad51.exe" &&START "" "C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1684
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:988
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:1812
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "f19126b02be0b331982e041dc9bcad51" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:324
- - C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe
    "C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1508
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1508 -s 1192
      4⤵
      Program crash
      PID:812

C:\Windows\system32\taskeng.exe
taskeng.exe {83618085-1C8B-4151-BA27-84FCE93C61A7} S-1-5-21-3499517378-2376672570-1134980332-1000:MLXLFKOI\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe
  C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1824
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 1824 -s 1196
    3⤵
    - Program crash
    PID:1832

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe

Filesize
223KB

MD5
f19126b02be0b331982e041dc9bcad51

SHA1
10ab04a6f24ce4540a564041375d8275a691e409

SHA256
2869db18f346049bcc9e378a77ed809fd9caad2fd2bd4d9f58d6e728c784b3eb

SHA512
e6158c6c1563ff3f013b97c0b5da7b5f3301657b948ddb1198ebaea7ce5fc3a9c9f3f449646f45c070514e8796e6315a2afaab7894ba20e3b857a5dc504d093c

Download Submit
C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe

Filesize
223KB

MD5
f19126b02be0b331982e041dc9bcad51

SHA1
10ab04a6f24ce4540a564041375d8275a691e409

SHA256
2869db18f346049bcc9e378a77ed809fd9caad2fd2bd4d9f58d6e728c784b3eb

SHA512
e6158c6c1563ff3f013b97c0b5da7b5f3301657b948ddb1198ebaea7ce5fc3a9c9f3f449646f45c070514e8796e6315a2afaab7894ba20e3b857a5dc504d093c

Download Submit
C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe

Filesize
223KB

MD5
f19126b02be0b331982e041dc9bcad51

SHA1
10ab04a6f24ce4540a564041375d8275a691e409

SHA256
2869db18f346049bcc9e378a77ed809fd9caad2fd2bd4d9f58d6e728c784b3eb

SHA512
e6158c6c1563ff3f013b97c0b5da7b5f3301657b948ddb1198ebaea7ce5fc3a9c9f3f449646f45c070514e8796e6315a2afaab7894ba20e3b857a5dc504d093c

Download Submit
memory/1204-54-0x00000000000F0000-0x000000000012C000-memory.dmp

Filesize
240KB

Download
memory/1204-55-0x000000001B0A0000-0x000000001B120000-memory.dmp

Filesize
512KB

Download
memory/1508-61-0x0000000000DE0000-0x0000000000E1C000-memory.dmp

Filesize
240KB

Download
memory/1508-62-0x000000001B100000-0x000000001B180000-memory.dmp

Filesize
512KB

Download
memory/1508-63-0x000000001B100000-0x000000001B180000-memory.dmp

Filesize
512KB

Download
memory/1824-65-0x000000001B090000-0x000000001B110000-memory.dmp

Filesize
512KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads