5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c

Analysis

max time kernel
316s
max time network
339s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
05/12/2022, 05:33

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General

Target

5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe
Size

33KB
MD5

24baab786afc6be75276ea008d1c76c0
SHA1

9863f1f9089482d1af2bb80bac173d2d74e7d468
SHA256

5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c
SHA512

8ddbfd1f88b789cf12ee0fbaacc9de4dcc4fbe63832417efca5866db40de9513d59d32a3710170efebe80f92fc9c5fdc778653e7d4e464ed852ce77554cfbc65
SSDEEP

768:8YoiqqZOcQLyH435p6lXaVSI3D1TgkcaG8S/VmF:8YvqqZ1QLyYTXcI5lZSQF

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2760	regsvr.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\Help\\"	regsvr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\regsvr.exe = "C:\\Windows\\Help\\regsvr.exe"	regsvr.exe
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows\CurrentVersion\Run	5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\Help\\"	5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows\CurrentVersion\Run	regsvr.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File created	C:\Windows\Help\	regsvr.exe
File created	C:\Windows\Help\pooy~z,opo	regsvr.exe
File opened for modification	C:\Windows\Help\pooy~z,opo	regsvr.exe
File created	C:\Windows\Help\	5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe
File created	C:\Windows\Help\regsvr.exe	5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe
File opened for modification	C:\Windows\Help\regsvr.exe	5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.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 3 IoCs

description	pid	Process	procid_target
PID 3164 wrote to memory of 2760	3164	5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe	84
PID 3164 wrote to memory of 2760	3164	5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe	84
PID 3164 wrote to memory of 2760	3164	5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe	84

C:\Users\Admin\AppData\Local\Temp\5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe
"C:\Users\Admin\AppData\Local\Temp\5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3164
- C:\Windows\Help\regsvr.exe
  "C:\Windows\Help\regsvr.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  PID:2760

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

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Downloads

C:\Windows\Help\regsvr.exe

Filesize
33KB

MD5
24baab786afc6be75276ea008d1c76c0

SHA1
9863f1f9089482d1af2bb80bac173d2d74e7d468

SHA256
5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c

SHA512
8ddbfd1f88b789cf12ee0fbaacc9de4dcc4fbe63832417efca5866db40de9513d59d32a3710170efebe80f92fc9c5fdc778653e7d4e464ed852ce77554cfbc65

Download Submit
C:\Windows\Help\regsvr.exe

Filesize
33KB

MD5
24baab786afc6be75276ea008d1c76c0

SHA1
9863f1f9089482d1af2bb80bac173d2d74e7d468

SHA256
5baf29a8b076740caa65f0e2caa0bc55ca98e850d478908a310b572c72fe7d0c

SHA512
8ddbfd1f88b789cf12ee0fbaacc9de4dcc4fbe63832417efca5866db40de9513d59d32a3710170efebe80f92fc9c5fdc778653e7d4e464ed852ce77554cfbc65

Download Submit