c8c503cad1ff92d608501ae76a4e9b6947580cf686d8867e8f060e37c1a1618a

Analysis

max time kernel
90s
max time network
110s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2023 19:21

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General

Target

tmp.exe
Size

2.9MB
MD5

44622abb2bd17b2c4734318dc5de7f6a
SHA1

c9d2392a4660759b72bda955a76c4ffd198b4383
SHA256

c8c503cad1ff92d608501ae76a4e9b6947580cf686d8867e8f060e37c1a1618a
SHA512

158f90bc5ab6727a4b0dc63567b1a1375feb4d9e5afe83aa63d0c1c91f11445d04a44f87e34566c513ec221538f4c4c281db323c325fe9a8513ce394465f5784
SSDEEP

49152:6aZXhxYiUWQ6ZMPFuqY6hYFJqlveNDhPpg5PvKM6E+mqp1p1KoHzx:jZRyiRQ6ZSuqXhcBNWXKBmqpj1bzx

Score

7^/10

persistence

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

Processes:

tmp.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation tmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	tmp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

tmp.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ntumenbu = "\"C:\\Users\\Admin\\AppData\\Roaming\\Bfkqfsqy\\Ntumenbu.exe\""	tmp.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
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 3 IoCs

Processes:

powershell.exetmp.exe

pid process

3892 powershell.exe
3892 powershell.exe
1800 tmp.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exetmp.exe

description pid process

Token: SeDebugPrivilege 3892 powershell.exe
Token: SeDebugPrivilege 1800 tmp.exe
Token: SeDebugPrivilege 1800 tmp.exe

pid	process
3892	powershell.exe
3892	powershell.exe
1800	tmp.exe

description	pid	process
Token: SeDebugPrivilege	3892	powershell.exe
Token: SeDebugPrivilege	1800	tmp.exe
Token: SeDebugPrivilege	1800	tmp.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

tmp.exe

description	pid	process	target process
PID 1800 wrote to memory of 3892	1800	tmp.exe	powershell.exe
PID 1800 wrote to memory of 3892	1800	tmp.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1800

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3892

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

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

Exfiltration

Command and Control

Web Service

T1102

Impact

Replay Monitor

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Downloads

memory/1800-132-0x0000018C8C820000-0x0000018C8CB12000-memory.dmp

Filesize
2.9MB

Download
memory/1800-133-0x0000018C8CE80000-0x0000018C8CEA2000-memory.dmp

Filesize
136KB

Download
memory/1800-135-0x00007FFD784B0000-0x00007FFD78F71000-memory.dmp

Filesize
10.8MB

Download
memory/1800-137-0x00007FFD784B0000-0x00007FFD78F71000-memory.dmp

Filesize
10.8MB

Download
memory/1800-140-0x0000018CA7300000-0x0000018CA739A000-memory.dmp

Filesize
616KB

Download
memory/1800-141-0x0000018CA73BA000-0x0000018CA73BF000-memory.dmp

Filesize
20KB

Download
memory/1800-143-0x0000018CA73BA000-0x0000018CA73BF000-memory.dmp

Filesize
20KB

Download
memory/1800-142-0x00007FFD784B0000-0x00007FFD78F71000-memory.dmp

Filesize
10.8MB

Download
memory/3892-134-0x0000000000000000-mapping.dmp

Download
memory/3892-136-0x00007FFD784B0000-0x00007FFD78F71000-memory.dmp

Filesize
10.8MB

Download
memory/3892-138-0x00007FFD784B0000-0x00007FFD78F71000-memory.dmp

Filesize
10.8MB

Download
memory/3892-139-0x00007FFD784B0000-0x00007FFD78F71000-memory.dmp

Filesize
10.8MB

Download