b2a3e747888965b0379759c9619f8d283678b32fdd0de6f3503a022b57f78d3d

General

Target

c1599b70e4145735dd29e4ca674619b2.exe
Size

228KB
MD5

c1599b70e4145735dd29e4ca674619b2
SHA1

4ef50fe0e43b28d29e59e00a9a06860c1314a1f1
SHA256

b2a3e747888965b0379759c9619f8d283678b32fdd0de6f3503a022b57f78d3d
SHA512

a6bf37915f297b3ab163a6c4ed3233cbf347bbf16d42bd25c1bbe32f8be4c5c191f7f9dcd5900eaf3f9c6919d21ff1e4bcc2d2ad86c9e1ee0d52d848eea374b1
SSDEEP

3072:1c52nLeK1ZmLIgI4TDsvaw3V8n6T+C8dwcEgzlJY8No1LnOIQkioYxiTT3:G52l1ZOZIYDArzPGEgzlJY8Kn0QTT3

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	c1599b70e4145735dd29e4ca674619b2.exe

Executes dropped EXE 1 IoCs

pid	Process
1732	coxnuuyczh.exe

Loads dropped DLL 1 IoCs

pid	Process
1732	coxnuuyczh.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
4988	3656	WerFault.exe	84
4548	1732	WerFault.exe	101

Kills process with taskkill 1 IoCs

evasion

pid	Process
4768	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3840	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1732	coxnuuyczh.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4768	taskkill.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
1732	coxnuuyczh.exe
1732	coxnuuyczh.exe
1732	coxnuuyczh.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
1732	coxnuuyczh.exe
1732	coxnuuyczh.exe
1732	coxnuuyczh.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3656 wrote to memory of 1096	3656	c1599b70e4145735dd29e4ca674619b2.exe	96
PID 3656 wrote to memory of 1096	3656	c1599b70e4145735dd29e4ca674619b2.exe	96
PID 3656 wrote to memory of 1096	3656	c1599b70e4145735dd29e4ca674619b2.exe	96
PID 1096 wrote to memory of 4768	1096	cmd.exe	98
PID 1096 wrote to memory of 4768	1096	cmd.exe	98
PID 1096 wrote to memory of 4768	1096	cmd.exe	98
PID 1096 wrote to memory of 3840	1096	cmd.exe	100
PID 1096 wrote to memory of 3840	1096	cmd.exe	100
PID 1096 wrote to memory of 3840	1096	cmd.exe	100
PID 1096 wrote to memory of 1732	1096	cmd.exe	101
PID 1096 wrote to memory of 1732	1096	cmd.exe	101
PID 1096 wrote to memory of 1732	1096	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\c1599b70e4145735dd29e4ca674619b2.exe
"C:\Users\Admin\AppData\Local\Temp\c1599b70e4145735dd29e4ca674619b2.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3656 -s 492
  2⤵
  - Program crash
  PID:4988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 3656 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\c1599b70e4145735dd29e4ca674619b2.exe" & start C:\Users\Admin\AppData\Local\COXNUU~1.EXE -f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1096
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /pid 3656
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4768
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 3 127.1
    3⤵
    - Runs ping.exe
    PID:3840
- - C:\Users\Admin\AppData\Local\coxnuuyczh.exe
    C:\Users\Admin\AppData\Local\COXNUU~1.EXE -f
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:1732
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1732 -s 504
      4⤵
      Program crash
      PID:4548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3656 -ip 3656
1⤵
PID:2568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1732 -ip 1732
1⤵
PID:4752

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\coxnuuyczh.exe

Filesize
228KB

MD5
c1599b70e4145735dd29e4ca674619b2

SHA1
4ef50fe0e43b28d29e59e00a9a06860c1314a1f1

SHA256
b2a3e747888965b0379759c9619f8d283678b32fdd0de6f3503a022b57f78d3d

SHA512
a6bf37915f297b3ab163a6c4ed3233cbf347bbf16d42bd25c1bbe32f8be4c5c191f7f9dcd5900eaf3f9c6919d21ff1e4bcc2d2ad86c9e1ee0d52d848eea374b1

Download Submit
memory/1732-15-0x00000000007C0000-0x00000000007C2000-memory.dmp

Filesize
8KB

Download
memory/1732-20-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download
memory/1732-29-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download
memory/1732-27-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download
memory/1732-8-0x00000000007C0000-0x00000000007C2000-memory.dmp

Filesize
8KB

Download
memory/1732-11-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download
memory/1732-25-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download
memory/1732-16-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download
memory/1732-13-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download
memory/1732-18-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download
memory/1732-22-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download
memory/3656-0-0x0000000000570000-0x0000000000572000-memory.dmp

Filesize
8KB

Download
memory/3656-2-0x0000000000560000-0x0000000000562000-memory.dmp

Filesize
8KB

Download
memory/3656-1-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download
memory/3656-4-0x0000000001000000-0x00000000010C9000-memory.dmp

Filesize
804KB

Download

Analysis

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