4a68d3660cf2f5519cedd039e7725f337b084fe611947a0215e35fd3bd769163

Analysis

max time kernel
123s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2022, 13:19

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

4a68d3660cf2f5519cedd039e7725f337b084fe611947a0215e35fd3bd769163.exe
Size

231KB
MD5

86faab4cd1815f6bba432b40a887835e
SHA1

89bdb36880520a8474eca11a8b44dbe3d7a87b3e
SHA256

4a68d3660cf2f5519cedd039e7725f337b084fe611947a0215e35fd3bd769163
SHA512

543d713b0fde339eed3d286991aa18511997a80e0bb1aae4f3461f32fae75f3376ab3eb11fcee91f9f8523ec44ffdb2760a891c50b4fbb6262465807e8136032
SSDEEP

6144:GcWMJJhqryYP/SasC7RV+/i/fccJaRt2VUJEJTZyW0lqyE:GczJJhqrVPaoNVqOfJJaT2rgrlrE

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1604	server_et.exe
852	mservice32_t.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	4a68d3660cf2f5519cedd039e7725f337b084fe611947a0215e35fd3bd769163.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	mservice32_t.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Update	mservice32_t.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\UpdateT = "C:\\Users\\Admin\\AppData\\Roaming\\mservice32_t.exe"	mservice32_t.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5052 wrote to memory of 1604	5052	4a68d3660cf2f5519cedd039e7725f337b084fe611947a0215e35fd3bd769163.exe	82
PID 5052 wrote to memory of 1604	5052	4a68d3660cf2f5519cedd039e7725f337b084fe611947a0215e35fd3bd769163.exe	82
PID 5052 wrote to memory of 1604	5052	4a68d3660cf2f5519cedd039e7725f337b084fe611947a0215e35fd3bd769163.exe	82
PID 1604 wrote to memory of 852	1604	server_et.exe	83
PID 1604 wrote to memory of 852	1604	server_et.exe	83
PID 1604 wrote to memory of 852	1604	server_et.exe	83

C:\Users\Admin\AppData\Local\Temp\4a68d3660cf2f5519cedd039e7725f337b084fe611947a0215e35fd3bd769163.exe
"C:\Users\Admin\AppData\Local\Temp\4a68d3660cf2f5519cedd039e7725f337b084fe611947a0215e35fd3bd769163.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5052
- C:\Users\Admin\AppData\Local\Temp\server_et.exe
  "C:\Users\Admin\AppData\Local\Temp\server_et.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1604
- - C:\Users\Admin\AppData\Roaming\mservice32_t.exe
    "C:\Users\Admin\AppData\Roaming\mservice32_t.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    PID:852

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
445KB

MD5
8e37d564ab6ca7cba641a99d50963241

SHA1
ba984e7f3ecadb639d53a450d297c11273ae4f54

SHA256
a366a79453c802c03dce39c9324f505c15149833e19d9ebb82b609a3990b2ee6

SHA512
389f909a7b1747da5af2cb48de3f59e4196342efd2ec8d941c6dce6e91c319e1816ab3d67128fa678be81df98ba5fc99e0b7c94c751a6df1c43a5b231c49bf69

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

Filesize
445KB

MD5
8e37d564ab6ca7cba641a99d50963241

SHA1
ba984e7f3ecadb639d53a450d297c11273ae4f54

SHA256
a366a79453c802c03dce39c9324f505c15149833e19d9ebb82b609a3990b2ee6

SHA512
389f909a7b1747da5af2cb48de3f59e4196342efd2ec8d941c6dce6e91c319e1816ab3d67128fa678be81df98ba5fc99e0b7c94c751a6df1c43a5b231c49bf69

Download Submit
C:\Users\Admin\AppData\Roaming\mservice32_t.exe

Filesize
445KB

MD5
8e37d564ab6ca7cba641a99d50963241

SHA1
ba984e7f3ecadb639d53a450d297c11273ae4f54

SHA256
a366a79453c802c03dce39c9324f505c15149833e19d9ebb82b609a3990b2ee6

SHA512
389f909a7b1747da5af2cb48de3f59e4196342efd2ec8d941c6dce6e91c319e1816ab3d67128fa678be81df98ba5fc99e0b7c94c751a6df1c43a5b231c49bf69

Download Submit
C:\Users\Admin\AppData\Roaming\mservice32_t.exe

Filesize
445KB

MD5
8e37d564ab6ca7cba641a99d50963241

SHA1
ba984e7f3ecadb639d53a450d297c11273ae4f54

SHA256
a366a79453c802c03dce39c9324f505c15149833e19d9ebb82b609a3990b2ee6

SHA512
389f909a7b1747da5af2cb48de3f59e4196342efd2ec8d941c6dce6e91c319e1816ab3d67128fa678be81df98ba5fc99e0b7c94c751a6df1c43a5b231c49bf69

Download Submit