cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2022, 04:28

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General

Target

cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a.exe
Size

52KB
MD5

557fad251a7f9cfc4457138c5fcc56f0
SHA1

2ac6f05b6f24c0baaa18524bdee4d3f8fd087912
SHA256

cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a
SHA512

82d1e55fadbc3be66ce292d406cebd380f71c9ec72adefdebfea010787cd3920f0be3c902ab2e4b43a1edee6c282dec4e68682b84bb8e473a6bffcb7c4f14712
SSDEEP

768:W3HRPxnLdhrGs1FND3ij02YvWZ0BuphAEweCgF:EJos133iIWeBKhoHW

Score

8^/10

evasion persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1576	system32.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
3108	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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3a4bad84ef1f0ccb763872d870b5a0d0.exe	system32.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3a4bad84ef1f0ccb763872d870b5a0d0.exe	system32.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3a4bad84ef1f0ccb763872d870b5a0d0 = "\"C:\\ProgramData\\system32.exe\" .."	system32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\3a4bad84ef1f0ccb763872d870b5a0d0 = "\"C:\\ProgramData\\system32.exe\" .."	system32.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 27 IoCs

pid	Process
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe
1576	system32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1576	system32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1260 wrote to memory of 1576	1260	cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a.exe	79
PID 1260 wrote to memory of 1576	1260	cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a.exe	79
PID 1260 wrote to memory of 1576	1260	cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a.exe	79
PID 1576 wrote to memory of 3108	1576	system32.exe	80
PID 1576 wrote to memory of 3108	1576	system32.exe	80
PID 1576 wrote to memory of 3108	1576	system32.exe	80

C:\Users\Admin\AppData\Local\Temp\cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a.exe
"C:\Users\Admin\AppData\Local\Temp\cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1260
- C:\ProgramData\system32.exe
  "C:\ProgramData\system32.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:1576
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\system32.exe" "system32.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:3108

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\system32.exe

Filesize
52KB

MD5
557fad251a7f9cfc4457138c5fcc56f0

SHA1
2ac6f05b6f24c0baaa18524bdee4d3f8fd087912

SHA256
cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a

SHA512
82d1e55fadbc3be66ce292d406cebd380f71c9ec72adefdebfea010787cd3920f0be3c902ab2e4b43a1edee6c282dec4e68682b84bb8e473a6bffcb7c4f14712

Download Submit
C:\ProgramData\system32.exe

Filesize
52KB

MD5
557fad251a7f9cfc4457138c5fcc56f0

SHA1
2ac6f05b6f24c0baaa18524bdee4d3f8fd087912

SHA256
cf8d0ce47fd80e76eb2dc258027fed76904766ef5c7ffdc142152c8e84c5dc6a

SHA512
82d1e55fadbc3be66ce292d406cebd380f71c9ec72adefdebfea010787cd3920f0be3c902ab2e4b43a1edee6c282dec4e68682b84bb8e473a6bffcb7c4f14712

Download Submit
memory/1260-132-0x0000000074AB0000-0x0000000075061000-memory.dmp

Filesize
5.7MB

Download
memory/1260-136-0x0000000074AB0000-0x0000000075061000-memory.dmp

Filesize
5.7MB

Download
memory/1576-138-0x0000000074AB0000-0x0000000075061000-memory.dmp

Filesize
5.7MB

Download
memory/1576-139-0x0000000074AB0000-0x0000000075061000-memory.dmp

Filesize
5.7MB

Download