ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79

General

Target

ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79.exe
Size

138KB
MD5

0a8bb10d2073dd4354b8744daf4ffe0e
SHA1

e81c37cb09e9f0e8c86e52ec6d7cd94f9ccfc4fe
SHA256

ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79
SHA512

c6a73249a1f0be8dc6dc2aa588a670124664506bd5a44c1409a59cdc7f473f87eaae0feceab76fec0e6c6b8d5b1a898f8adae31b0ff7c14827a0229b91311b07
SSDEEP

3072:tF7EhNjU+Hf5AlG59WDgnmDrEnOhkR6Rv/sGw9Cg0F3jxsTuGyqb8CMlsGdJ7VwS:tF7EhN4+HhAlG59WDgnmDThkR6Rv/sGs

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4492	coldm.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
3968	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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6012162498ee0aea543154e784b47404.exe	coldm.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6012162498ee0aea543154e784b47404.exe	coldm.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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\6012162498ee0aea543154e784b47404 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\coldm.exe\" .."	coldm.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\6012162498ee0aea543154e784b47404 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\coldm.exe\" .."	coldm.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 25 IoCs

pid	Process
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe
4492	coldm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4492	coldm.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 796 wrote to memory of 4492	796	ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79.exe	82
PID 796 wrote to memory of 4492	796	ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79.exe	82
PID 796 wrote to memory of 4492	796	ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79.exe	82
PID 4492 wrote to memory of 3968	4492	coldm.exe	83
PID 4492 wrote to memory of 3968	4492	coldm.exe	83
PID 4492 wrote to memory of 3968	4492	coldm.exe	83

C:\Users\Admin\AppData\Local\Temp\ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79.exe
"C:\Users\Admin\AppData\Local\Temp\ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:796
- C:\Users\Admin\AppData\Local\Temp\coldm.exe
  "C:\Users\Admin\AppData\Local\Temp\coldm.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:4492
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\coldm.exe" "coldm.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:3968

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\coldm.exe

Filesize
138KB

MD5
0a8bb10d2073dd4354b8744daf4ffe0e

SHA1
e81c37cb09e9f0e8c86e52ec6d7cd94f9ccfc4fe

SHA256
ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79

SHA512
c6a73249a1f0be8dc6dc2aa588a670124664506bd5a44c1409a59cdc7f473f87eaae0feceab76fec0e6c6b8d5b1a898f8adae31b0ff7c14827a0229b91311b07

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

Filesize
138KB

MD5
0a8bb10d2073dd4354b8744daf4ffe0e

SHA1
e81c37cb09e9f0e8c86e52ec6d7cd94f9ccfc4fe

SHA256
ac4c0143df9c70a4ad5333666a10ad936406c812c6ce97bc37e8670586dc5d79

SHA512
c6a73249a1f0be8dc6dc2aa588a670124664506bd5a44c1409a59cdc7f473f87eaae0feceab76fec0e6c6b8d5b1a898f8adae31b0ff7c14827a0229b91311b07

Download Submit
memory/796-132-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/796-136-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/3968-137-0x0000000000000000-mapping.dmp

Download
memory/4492-133-0x0000000000000000-mapping.dmp

Download
memory/4492-138-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/4492-139-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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