gurcu | b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e

General

Target

1232.exe
Size

827KB
MD5

a1ce7b26712e1db177d86fa87d09c354
SHA1

23d567e5ee4d4bf882f5d4ebe54643eecd921ef4
SHA256

b6b0ac3d7e4ef3a97fb470b38e53f3d8114b736b60408d9828cd5f81e2d7cf0e
SHA512

e5d5c4770131274c28dab0adbac3ed84395aca30a8c15f7004cd4d28ae503c507dacb432dcce65b2f004711837b3cd7a26766b028957aa3a8bc2d99f9dd849d4
SSDEEP

12288:IKY7z5GoJiGaq5auxKSjipNvJDK2WSqcIVr4vo1euUTyH2BQMyEp0mpefJ3Lww:G5GoR5amjipNvFK2LXG3VrEuqqJ8w

Score

10^/10

gurcu collection spyware stealer

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot5948365373:AAHGoShKq2YoPLHuMrakRbVNthbMABFYHUc/sendMessage?chat_id=-1001620069625

Signatures

Gurcu, WhiteSnake
Gurcu is a malware stealer written in C#.
stealer gurcu
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4102714285-680558483-2379744688-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1232.exe
Key opened	\REGISTRY\USER\S-1-5-21-4102714285-680558483-2379744688-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1232.exe
Key opened	\REGISTRY\USER\S-1-5-21-4102714285-680558483-2379744688-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1232.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1148 set thread context of 1860	1148	1232.exe	29

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1264	1860	WerFault.exe	29

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1148	1232.exe
1860	1232.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1148	1232.exe
Token: SeDebugPrivilege	1860	1232.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 584	1148	1232.exe	28
PID 1148 wrote to memory of 584	1148	1232.exe	28
PID 1148 wrote to memory of 584	1148	1232.exe	28
PID 1148 wrote to memory of 584	1148	1232.exe	28
PID 1148 wrote to memory of 1860	1148	1232.exe	29
PID 1148 wrote to memory of 1860	1148	1232.exe	29
PID 1148 wrote to memory of 1860	1148	1232.exe	29
PID 1148 wrote to memory of 1860	1148	1232.exe	29
PID 1148 wrote to memory of 1860	1148	1232.exe	29
PID 1148 wrote to memory of 1860	1148	1232.exe	29
PID 1148 wrote to memory of 1860	1148	1232.exe	29
PID 1148 wrote to memory of 1860	1148	1232.exe	29
PID 1148 wrote to memory of 1860	1148	1232.exe	29
PID 1860 wrote to memory of 1264	1860	1232.exe	30
PID 1860 wrote to memory of 1264	1860	1232.exe	30
PID 1860 wrote to memory of 1264	1860	1232.exe	30
PID 1860 wrote to memory of 1264	1860	1232.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4102714285-680558483-2379744688-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1232.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4102714285-680558483-2379744688-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1232.exe

C:\Users\Admin\AppData\Local\Temp\1232.exe
"C:\Users\Admin\AppData\Local\Temp\1232.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1148
- C:\Users\Admin\AppData\Local\Temp\1232.exe
  "C:\Users\Admin\AppData\Local\Temp\1232.exe"
  2⤵
  PID:584
- C:\Users\Admin\AppData\Local\Temp\1232.exe
  "C:\Users\Admin\AppData\Local\Temp\1232.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:1860
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1860 -s 2392
    3⤵
    - Program crash
    PID:1264

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1148-54-0x0000000000120000-0x00000000001F6000-memory.dmp

Filesize
856KB

Download
memory/1148-55-0x0000000004B10000-0x0000000004B50000-memory.dmp

Filesize
256KB

Download
memory/1148-56-0x00000000006B0000-0x00000000006C0000-memory.dmp

Filesize
64KB

Download
memory/1148-57-0x0000000004B10000-0x0000000004B50000-memory.dmp

Filesize
256KB

Download
memory/1148-58-0x0000000000730000-0x000000000073A000-memory.dmp

Filesize
40KB

Download
memory/1148-59-0x0000000005D20000-0x0000000005DB0000-memory.dmp

Filesize
576KB

Download
memory/1148-60-0x0000000002080000-0x00000000020DC000-memory.dmp

Filesize
368KB

Download
memory/1860-61-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1860-62-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1860-63-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1860-64-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1860-66-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1860-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1860-70-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1860-68-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1860-71-0x0000000004A20000-0x0000000004A60000-memory.dmp

Filesize
256KB

Download
memory/1860-72-0x0000000004A20000-0x0000000004A60000-memory.dmp

Filesize
256KB

Download

Analysis

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