c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238

Analysis

max time kernel
368s
max time network
435s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2022, 20:22

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General

Target

c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe
Size

144KB
MD5

ef873c2e5a4b962fa6790bf504c78e9a
SHA1

a341a187465fa80a55e35f30361e161d2085b030
SHA256

c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238
SHA512

b6e0d249cddb26a9497b4d998a01c20165bfd0ad8afcfc7bb6d629133cef71e05cf8a84002e65c8aa149f139e12a3d3617650ef365365e28e21ee37bf3f2c538
SSDEEP

1536:UJeDVk4PWt3obHtha0G+UAqn2z3HldOlfL3wi6GdUS9qfmAhjimR:hDK4OtgHEplAVMlfT5dgfmAFimR

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	pcgooc.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe

Executes dropped EXE 1 IoCs

pid	Process
4968	pcgooc.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	c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe

Adds Run key to start application 2 TTPs 6 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\pcgooc = "C:\\Users\\Admin\\pcgooc.exe /c"	pcgooc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pcgooc = "C:\\Users\\Admin\\pcgooc.exe /x"	pcgooc.exe
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows\CurrentVersion\Run\	c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pcgooc = "C:\\Users\\Admin\\pcgooc.exe /b"	c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows\CurrentVersion\Run\	pcgooc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pcgooc = "C:\\Users\\Admin\\pcgooc.exe /a"	pcgooc.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 8 IoCs

pid	Process
3624	c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe
3624	c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe
4968	pcgooc.exe
4968	pcgooc.exe
4968	pcgooc.exe
4968	pcgooc.exe
4968	pcgooc.exe
4968	pcgooc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3624	c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe
4968	pcgooc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3624 wrote to memory of 4968	3624	c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe	85
PID 3624 wrote to memory of 4968	3624	c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe	85
PID 3624 wrote to memory of 4968	3624	c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe	85

C:\Users\Admin\AppData\Local\Temp\c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe
"C:\Users\Admin\AppData\Local\Temp\c760c6760f6c854efd2091f4e146384f0edf775407d7f50939911703e0cc6238.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3624
- C:\Users\Admin\pcgooc.exe
  "C:\Users\Admin\pcgooc.exe"
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4968

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

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:\Users\Admin\pcgooc.exe

Filesize
144KB

MD5
8bf12fe532df68d84bc093ed7f6ccef0

SHA1
443f8b86fb9d5f1828379982d910adb6079b309c

SHA256
33a10c0f9bf30a0ed6bea1eb6ef5eeb95328cbc521b3d4bd61cc491c195e2bbf

SHA512
421e0d4a20759cd2079bf901df8ddf9d56b6c1c59b4517b99f0b2a37738de4109ff2103bda6142a6e93514d013daebc279a34ac561461bd1aa98a90448d962b4

Download Submit
C:\Users\Admin\pcgooc.exe

Filesize
144KB

MD5
8bf12fe532df68d84bc093ed7f6ccef0

SHA1
443f8b86fb9d5f1828379982d910adb6079b309c

SHA256
33a10c0f9bf30a0ed6bea1eb6ef5eeb95328cbc521b3d4bd61cc491c195e2bbf

SHA512
421e0d4a20759cd2079bf901df8ddf9d56b6c1c59b4517b99f0b2a37738de4109ff2103bda6142a6e93514d013daebc279a34ac561461bd1aa98a90448d962b4

Download Submit