shurk | 563b5f3c95294f3577426f39bf29606694215be6ff2e8ac3e0fa7906a3b50657

Analysis

max time kernel
142s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
25-08-2023 15:08

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General

Target

990acad7176719fc7ce6cf4d9337e7b0_magniber_JC.exe
Size

8.7MB
MD5

990acad7176719fc7ce6cf4d9337e7b0
SHA1

bef1810b9ddc039a096bfaba5f1b4392b3e47628
SHA256

563b5f3c95294f3577426f39bf29606694215be6ff2e8ac3e0fa7906a3b50657
SHA512

7343507ed1f4c931fe1e6b4e2abc1e7cbedf005d6f00cb3c495dede114de0200af056c29107122ce4e95fb67a49e303d168599c952a0413f8cd9f587bb6b7a4d
SSDEEP

196608:cGxAdGiQw2QGAfpF0u1q8jntGJnSX/08iCgYj8x:cGOQw2QLpi8jnt2SXMBCXg

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

Processes:

resource yara_rule

behavioral2/memory/3596-7-0x000000007E770000-0x000000007EF5A000-memory.dmp shurk_stealer
behavioral2/memory/3596-10-0x0000000006400000-0x0000000006BB2000-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.

Processes:

flow ioc

7 checkip.amazonaws.com
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.

System Information Discovery
T1082

Processes:

WMIC.exe

pid process

4804 WMIC.exe
GoLang User-Agent 3 IoCs
Uses default user-agent string defined by GoLang HTTP packages.

Processes:

description flow ioc

HTTP User-Agent header 12 Go-http-client/1.1
HTTP User-Agent header 20 Go-http-client/1.1
HTTP User-Agent header 8 Go-http-client/1.1

resource	yara_rule
behavioral2/memory/3596-7-0x000000007E770000-0x000000007EF5A000-memory.dmp	shurk_stealer
behavioral2/memory/3596-10-0x0000000006400000-0x0000000006BB2000-memory.dmp	shurk_stealer

flow	ioc
7	checkip.amazonaws.com

pid	process
4804	WMIC.exe

description	flow	ioc
HTTP User-Agent header	12	Go-http-client/1.1
HTTP User-Agent header	20	Go-http-client/1.1
HTTP User-Agent header	8	Go-http-client/1.1

Suspicious use of AdjustPrivilegeToken 42 IoCs

Processes:

WMIC.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4804	WMIC.exe
Token: SeSecurityPrivilege	4804	WMIC.exe
Token: SeTakeOwnershipPrivilege	4804	WMIC.exe
Token: SeLoadDriverPrivilege	4804	WMIC.exe
Token: SeSystemProfilePrivilege	4804	WMIC.exe
Token: SeSystemtimePrivilege	4804	WMIC.exe
Token: SeProfSingleProcessPrivilege	4804	WMIC.exe
Token: SeIncBasePriorityPrivilege	4804	WMIC.exe
Token: SeCreatePagefilePrivilege	4804	WMIC.exe
Token: SeBackupPrivilege	4804	WMIC.exe
Token: SeRestorePrivilege	4804	WMIC.exe
Token: SeShutdownPrivilege	4804	WMIC.exe
Token: SeDebugPrivilege	4804	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4804	WMIC.exe
Token: SeRemoteShutdownPrivilege	4804	WMIC.exe
Token: SeUndockPrivilege	4804	WMIC.exe
Token: SeManageVolumePrivilege	4804	WMIC.exe
Token: 33	4804	WMIC.exe
Token: 34	4804	WMIC.exe
Token: 35	4804	WMIC.exe
Token: 36	4804	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4804	WMIC.exe
Token: SeSecurityPrivilege	4804	WMIC.exe
Token: SeTakeOwnershipPrivilege	4804	WMIC.exe
Token: SeLoadDriverPrivilege	4804	WMIC.exe
Token: SeSystemProfilePrivilege	4804	WMIC.exe
Token: SeSystemtimePrivilege	4804	WMIC.exe
Token: SeProfSingleProcessPrivilege	4804	WMIC.exe
Token: SeIncBasePriorityPrivilege	4804	WMIC.exe
Token: SeCreatePagefilePrivilege	4804	WMIC.exe
Token: SeBackupPrivilege	4804	WMIC.exe
Token: SeRestorePrivilege	4804	WMIC.exe
Token: SeShutdownPrivilege	4804	WMIC.exe
Token: SeDebugPrivilege	4804	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4804	WMIC.exe
Token: SeRemoteShutdownPrivilege	4804	WMIC.exe
Token: SeUndockPrivilege	4804	WMIC.exe
Token: SeManageVolumePrivilege	4804	WMIC.exe
Token: 33	4804	WMIC.exe
Token: 34	4804	WMIC.exe
Token: 35	4804	WMIC.exe
Token: 36	4804	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

990acad7176719fc7ce6cf4d9337e7b0_magniber_JC.execmd.exe

description	pid	process	target process
PID 3596 wrote to memory of 4232	3596	990acad7176719fc7ce6cf4d9337e7b0_magniber_JC.exe	cmd.exe
PID 3596 wrote to memory of 4232	3596	990acad7176719fc7ce6cf4d9337e7b0_magniber_JC.exe	cmd.exe
PID 3596 wrote to memory of 4232	3596	990acad7176719fc7ce6cf4d9337e7b0_magniber_JC.exe	cmd.exe
PID 4232 wrote to memory of 4804	4232	cmd.exe	WMIC.exe
PID 4232 wrote to memory of 4804	4232	cmd.exe	WMIC.exe
PID 4232 wrote to memory of 4804	4232	cmd.exe	WMIC.exe

C:\Users\Admin\AppData\Local\Temp\990acad7176719fc7ce6cf4d9337e7b0_magniber_JC.exe
"C:\Users\Admin\AppData\Local\Temp\990acad7176719fc7ce6cf4d9337e7b0_magniber_JC.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3596

C:\Windows\SysWOW64\cmd.exe
cmd /C "wmic path win32_VideoController get name"
2⤵
- Suspicious use of WriteProcessMemory
PID:4232

C:\Windows\SysWOW64\Wbem\WMIC.exe
wmic path win32_VideoController get name
3⤵
- Detects videocard installed
- Suspicious use of AdjustPrivilegeToken
PID:4804

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/3596-0-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-1-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-2-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-3-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-4-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-5-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-6-0x0000000002370000-0x0000000002380000-memory.dmp

Filesize
64KB

Download
memory/3596-7-0x000000007E770000-0x000000007EF5A000-memory.dmp

Filesize
7.9MB

Download
memory/3596-8-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-10-0x0000000006400000-0x0000000006BB2000-memory.dmp

Filesize
7.7MB

Download
memory/3596-27-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-28-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-29-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-30-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-31-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-32-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download
memory/3596-33-0x0000000006400000-0x0000000006BB2000-memory.dmp

Filesize
7.7MB

Download
memory/3596-34-0x0000000075A20000-0x0000000075B10000-memory.dmp

Filesize
960KB

Download