shurk | 1c6287821da0fb2fbc21f358cdc1aaed64d3ded4faf35749c0b38e9e37b6a017

Analysis

max time kernel
127s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
16-08-2023 16:42

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General

Target

06ff4ba1d0eec6c08d4b283d89f64f93_magniber_JC.exe
Size

8.7MB
MD5

06ff4ba1d0eec6c08d4b283d89f64f93
SHA1

b5a6e9e2e5437fa03ec1f83fbce3675c9a1a5c50
SHA256

1c6287821da0fb2fbc21f358cdc1aaed64d3ded4faf35749c0b38e9e37b6a017
SHA512

c8f46a046c22433865aa2d4ecd66621624af82560f895e2daa0d82f46e1bcb238de0ba8fcb9a88558dc6e7778d447f0e7ccb6c15e7a3960b444c07e3b2bae6fe
SSDEEP

196608:WBtayDqb6tgVatfRTYSrZtoagFwReADF6GnH+nX9cY1xyaD:WBtCetFtfBrLzDF62eNbQaD

Score

10^/10

shurk infostealer spyware stealer

Malware Config

Signatures

Shurk
Shurk is an infostealer, written in C++ which appeared in 2021.
infostealer shurk

Shurk Stealer payload 2 IoCs

resource	yara_rule
behavioral2/memory/1608-140-0x00000000FF140000-0x00000000FF92A000-memory.dmp	shurk_stealer
behavioral2/memory/1608-143-0x0000000004800000-0x0000000004FB2000-memory.dmp	shurk_stealer

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 cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

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
7	checkip.amazonaws.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1568	WMIC.exe

GoLang User-Agent 3 IoCs

Uses default user-agent string defined by GoLang HTTP packages.

description	flow	ioc
HTTP User-Agent header	8	Go-http-client/1.1
HTTP User-Agent header	10	Go-http-client/1.1
HTTP User-Agent header	20	Go-http-client/1.1

Suspicious use of AdjustPrivilegeToken 42 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1568	WMIC.exe
Token: SeSecurityPrivilege	1568	WMIC.exe
Token: SeTakeOwnershipPrivilege	1568	WMIC.exe
Token: SeLoadDriverPrivilege	1568	WMIC.exe
Token: SeSystemProfilePrivilege	1568	WMIC.exe
Token: SeSystemtimePrivilege	1568	WMIC.exe
Token: SeProfSingleProcessPrivilege	1568	WMIC.exe
Token: SeIncBasePriorityPrivilege	1568	WMIC.exe
Token: SeCreatePagefilePrivilege	1568	WMIC.exe
Token: SeBackupPrivilege	1568	WMIC.exe
Token: SeRestorePrivilege	1568	WMIC.exe
Token: SeShutdownPrivilege	1568	WMIC.exe
Token: SeDebugPrivilege	1568	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1568	WMIC.exe
Token: SeRemoteShutdownPrivilege	1568	WMIC.exe
Token: SeUndockPrivilege	1568	WMIC.exe
Token: SeManageVolumePrivilege	1568	WMIC.exe
Token: 33	1568	WMIC.exe
Token: 34	1568	WMIC.exe
Token: 35	1568	WMIC.exe
Token: 36	1568	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1568	WMIC.exe
Token: SeSecurityPrivilege	1568	WMIC.exe
Token: SeTakeOwnershipPrivilege	1568	WMIC.exe
Token: SeLoadDriverPrivilege	1568	WMIC.exe
Token: SeSystemProfilePrivilege	1568	WMIC.exe
Token: SeSystemtimePrivilege	1568	WMIC.exe
Token: SeProfSingleProcessPrivilege	1568	WMIC.exe
Token: SeIncBasePriorityPrivilege	1568	WMIC.exe
Token: SeCreatePagefilePrivilege	1568	WMIC.exe
Token: SeBackupPrivilege	1568	WMIC.exe
Token: SeRestorePrivilege	1568	WMIC.exe
Token: SeShutdownPrivilege	1568	WMIC.exe
Token: SeDebugPrivilege	1568	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1568	WMIC.exe
Token: SeRemoteShutdownPrivilege	1568	WMIC.exe
Token: SeUndockPrivilege	1568	WMIC.exe
Token: SeManageVolumePrivilege	1568	WMIC.exe
Token: 33	1568	WMIC.exe
Token: 34	1568	WMIC.exe
Token: 35	1568	WMIC.exe
Token: 36	1568	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 3672	1608	06ff4ba1d0eec6c08d4b283d89f64f93_magniber_JC.exe	83
PID 1608 wrote to memory of 3672	1608	06ff4ba1d0eec6c08d4b283d89f64f93_magniber_JC.exe	83
PID 1608 wrote to memory of 3672	1608	06ff4ba1d0eec6c08d4b283d89f64f93_magniber_JC.exe	83
PID 3672 wrote to memory of 1568	3672	cmd.exe	85
PID 3672 wrote to memory of 1568	3672	cmd.exe	85
PID 3672 wrote to memory of 1568	3672	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\06ff4ba1d0eec6c08d4b283d89f64f93_magniber_JC.exe
"C:\Users\Admin\AppData\Local\Temp\06ff4ba1d0eec6c08d4b283d89f64f93_magniber_JC.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Windows\SysWOW64\cmd.exe
  cmd /C "wmic path win32_VideoController get name"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3672
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic path win32_VideoController get name
    3⤵
    - Detects videocard installed
    - Suspicious use of AdjustPrivilegeToken
    PID:1568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1608-133-0x0000000077A70000-0x0000000077B60000-memory.dmp

Filesize
960KB

Download
memory/1608-134-0x0000000077A70000-0x0000000077B60000-memory.dmp

Filesize
960KB

Download
memory/1608-135-0x0000000077A70000-0x0000000077B60000-memory.dmp

Filesize
960KB

Download
memory/1608-136-0x0000000077A70000-0x0000000077B60000-memory.dmp

Filesize
960KB

Download
memory/1608-137-0x0000000077A70000-0x0000000077B60000-memory.dmp

Filesize
960KB

Download
memory/1608-138-0x0000000077A70000-0x0000000077B60000-memory.dmp

Filesize
960KB

Download
memory/1608-139-0x0000000077A70000-0x0000000077B60000-memory.dmp

Filesize
960KB

Download
memory/1608-141-0x0000000000D70000-0x0000000000D80000-memory.dmp

Filesize
64KB

Download
memory/1608-140-0x00000000FF140000-0x00000000FF92A000-memory.dmp

Filesize
7.9MB

Download
memory/1608-143-0x0000000004800000-0x0000000004FB2000-memory.dmp

Filesize
7.7MB

Download
memory/1608-160-0x0000000077A70000-0x0000000077B60000-memory.dmp

Filesize
960KB

Download
memory/1608-161-0x0000000004800000-0x0000000004FB2000-memory.dmp

Filesize
7.7MB

Download