55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6

General

Target

55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6.exe
Size

25KB
MD5

130ad847dfebc8dcd876409cb47b7290
SHA1

b19b2537716117063ca17e1018fe5baa69b23112
SHA256

55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6
SHA512

7ed8b9b49f7b05eaed287399a29c3d21ccf7a50090cd8ef56f1ab66cf27ca88b65b8f91fcdc47bbc3316b66052fc966d2818608be541869d92bf00502f1f2e45
SSDEEP

768:iodHq2OnJASJ38/id/wDwlfIMRVz8pUo5xb:nNqrJ/J3vd/wExI0Zpkb

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2132	windows 7.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2640	netsh.exe

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\829ea5718ed4419a3148fa4e3dfaba70.exe	windows 7.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\829ea5718ed4419a3148fa4e3dfaba70.exe	windows 7.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\829ea5718ed4419a3148fa4e3dfaba70 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\windows 7.exe\" .."	windows 7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\829ea5718ed4419a3148fa4e3dfaba70 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\windows 7.exe\" .."	windows 7.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe
2132	windows 7.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2132	windows 7.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 2132	2820	55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6.exe	79
PID 2820 wrote to memory of 2132	2820	55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6.exe	79
PID 2820 wrote to memory of 2132	2820	55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6.exe	79
PID 2132 wrote to memory of 2640	2132	windows 7.exe	81
PID 2132 wrote to memory of 2640	2132	windows 7.exe	81
PID 2132 wrote to memory of 2640	2132	windows 7.exe	81

C:\Users\Admin\AppData\Local\Temp\55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6.exe
"C:\Users\Admin\AppData\Local\Temp\55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Users\Admin\AppData\Local\Temp\windows 7.exe
  "C:\Users\Admin\AppData\Local\Temp\windows 7.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2132
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\windows 7.exe" "windows 7.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\windows 7.exe

Filesize
25KB

MD5
130ad847dfebc8dcd876409cb47b7290

SHA1
b19b2537716117063ca17e1018fe5baa69b23112

SHA256
55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6

SHA512
7ed8b9b49f7b05eaed287399a29c3d21ccf7a50090cd8ef56f1ab66cf27ca88b65b8f91fcdc47bbc3316b66052fc966d2818608be541869d92bf00502f1f2e45

Download Submit
C:\Users\Admin\AppData\Local\Temp\windows 7.exe

Filesize
25KB

MD5
130ad847dfebc8dcd876409cb47b7290

SHA1
b19b2537716117063ca17e1018fe5baa69b23112

SHA256
55bf6f0b904784460ace3956af3f4cade754c346df1a88fd042c29ee57703dd6

SHA512
7ed8b9b49f7b05eaed287399a29c3d21ccf7a50090cd8ef56f1ab66cf27ca88b65b8f91fcdc47bbc3316b66052fc966d2818608be541869d92bf00502f1f2e45

Download Submit
memory/2132-133-0x0000000000000000-mapping.dmp

Download
memory/2132-138-0x0000000074C70000-0x0000000075221000-memory.dmp

Filesize
5.7MB

Download
memory/2132-139-0x0000000074C70000-0x0000000075221000-memory.dmp

Filesize
5.7MB

Download
memory/2640-137-0x0000000000000000-mapping.dmp

Download
memory/2820-132-0x0000000074C70000-0x0000000075221000-memory.dmp

Filesize
5.7MB

Download
memory/2820-136-0x0000000074C70000-0x0000000075221000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing