b2adace2d5b56e1ce62875558cfac2d1ba79c8d4d28625a8e7a0b475fa7615bd

General

Target
ZynvexClient-Built.exe
Size 12KB
Sample260825-qwwcmshd46
SHA256 b2adace2d5b56e1ce62875558cfac2d1ba79c8d4d28625a8e7a0b475fa7615bd
MD5 8cacb756f0a592ca8dd432a08bc393c9
SHA1 6dd1cd0a6473693c510c2b44fb9c4b1c9da27a60
SHA512 702581e81525ed38623c558e992081b944ca894e63e5e1d42995367122f804d5a868e25e4a7a1b49dc90596fc7fc353bee4942e2939c6f0e2efcfd38aff28249
SSDEEP 192:PlR/pu0hSdyl1heBQR2HF8Z4ogNmaHYkfzNuOdRGt569r0PrpfB3:Pr/JSw1EBQkaynLYYzN5/00Oj
TLSH
T1F342081D97EC6633EC7E0BB88CB2C34107F1E6216542DF9E7DC8A09A6D437480651BAE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4812	driver.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-668679576-120646659-2289335452-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Chrome-Driver = "C:\\Users\\Admin\\AppData\\Local\\Chrome-Driver\\driver.exe"	ZynvexClient-Built.exe

Executes a command shell one-liner 1 TTPs 5 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2244	cmd.exe
3144	cmd.exe
3688	cmd.exe
560	cmd.exe
2176	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ZynvexClient-Built.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	driver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3144	cmd.exe
4536	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4536	PING.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1908	ZynvexClient-Built.exe
Token: SeDebugPrivilege	1908	ZynvexClient-Built.exe
Token: SeDebugPrivilege	4812	driver.exe
Token: SeDebugPrivilege	4812	driver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4812 wrote to memory of 3688	4812	driver.exe	97
PID 4812 wrote to memory of 560	4812	driver.exe	103
PID 4812 wrote to memory of 2176	4812	driver.exe	105
PID 4812 wrote to memory of 2244	4812	driver.exe	107
PID 4812 wrote to memory of 3144	4812	driver.exe	109
PID 3144 wrote to memory of 4536	3144	cmd.exe	111

C:\Users\Admin\AppData\Local\Temp\ZynvexClient-Built.exe
"C:\Users\Admin\AppData\Local\Temp\ZynvexClient-Built.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1908

C:\Users\Admin\AppData\Local\Chrome-Driver\driver.exe
C:\Users\Admin\AppData\Local\Chrome-Driver\driver.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c dir /s
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:3688
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c dir /s
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:560
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c echo EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEEEEEEEEEEEEEEEEEEEEEEEE
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2176
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c dir /s
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2244
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c ping 8.8.8.8
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3144
- - C:\Windows\SysWOW64\PING.EXE
    ping 8.8.8.8
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4536

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

driver.exe

Path C:\Users\Admin\AppData\Local\Chrome-Driver\driver.exe
Size 12KB
SHA256 b2adace2d5b56e1ce62875558cfac2d1ba79c8d4d28625a8e7a0b475fa7615bd
MD5 8cacb756f0a592ca8dd432a08bc393c9
SHA1 6dd1cd0a6473693c510c2b44fb9c4b1c9da27a60
SHA512 702581e81525ed38623c558e992081b944ca894e63e5e1d42995367122f804d5a868e25e4a7a1b49dc90596fc7fc353bee4942e2939c6f0e2efcfd38aff28249
SSDEEP 192:PlR/pu0hSdyl1heBQR2HF8Z4ogNmaHYkfzNuOdRGt569r0PrpfB3:Pr/JSw1EBQkaynLYYzN5/00Oj
TLSH
T1F342081D97EC6633EC7E0BB88CB2C34107F1E6216542DF9E7DC8A09A6D437480651BAE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1908-0-0x0000000000EE0000-0x0000000000EEA000-memory.dmp

Download

memory/1908-3-0x00000000057E0000-0x00000000057F0000-memory.dmp

Download

memory/1908-7-0x00000000057E0000-0x00000000057F0000-memory.dmp

Download

memory/4812-6-0x0000000005800000-0x0000000005810000-memory.dmp

Download

memory/4812-8-0x0000000005800000-0x0000000005810000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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