3fb631fa531f1393af9469aabcb808eab87eb3c3fac3f901854b75fe4e806d0e

Analysis

max time kernel
119s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
05-04-2023 21:17

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General

Target

gcleaner.exe
Size

324KB
MD5

f0fdfaad6edf6b629ffd261429dcd756
SHA1

e364e2f87e231c6eb6a733d69f1b9033370f3107
SHA256

3fb631fa531f1393af9469aabcb808eab87eb3c3fac3f901854b75fe4e806d0e
SHA512

8be7750477b6f3d3a962931b57f90a4f7193fbbe28ad725ec090c816f85b7c30bf41c11455e4f2e3f1c9cda6f50925dc8575947e72b65e6aae003b912b4629b0
SSDEEP

6144:msYSsp5yL23j0Tj4M6aW4I7NMk5B8k3qX/SCm63P8KAO8XNESqAguOSfmiCQsmG:msYSsp5R3j0Tj4XaW4I7NM0B9a04yHLg

Score

7^/10

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:

gcleaner.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation	gcleaner.exe

Executes dropped EXE 1 IoCs

Processes:

oA6NuFXOJbUf.exe

pid process

4256 oA6NuFXOJbUf.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

488 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

gcleaner.exe

pid process

3948 gcleaner.exe
3948 gcleaner.exe
3948 gcleaner.exe
3948 gcleaner.exe
3948 gcleaner.exe
3948 gcleaner.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 488 taskkill.exe

pid	process
4256	oA6NuFXOJbUf.exe

pid	process
488	taskkill.exe

pid	process
3948	gcleaner.exe
3948	gcleaner.exe
3948	gcleaner.exe
3948	gcleaner.exe
3948	gcleaner.exe
3948	gcleaner.exe

description	pid	process
Token: SeDebugPrivilege	488	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

gcleaner.execmd.exe

description	pid	process	target process
PID 3948 wrote to memory of 4256	3948	gcleaner.exe	oA6NuFXOJbUf.exe
PID 3948 wrote to memory of 4256	3948	gcleaner.exe	oA6NuFXOJbUf.exe
PID 3948 wrote to memory of 4256	3948	gcleaner.exe	oA6NuFXOJbUf.exe
PID 3948 wrote to memory of 2984	3948	gcleaner.exe	cmd.exe
PID 3948 wrote to memory of 2984	3948	gcleaner.exe	cmd.exe
PID 3948 wrote to memory of 2984	3948	gcleaner.exe	cmd.exe
PID 2984 wrote to memory of 488	2984	cmd.exe	taskkill.exe
PID 2984 wrote to memory of 488	2984	cmd.exe	taskkill.exe
PID 2984 wrote to memory of 488	2984	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\gcleaner.exe
"C:\Users\Admin\AppData\Local\Temp\gcleaner.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\oA6NuFXOJbUf.exe
  2⤵
  - Executes dropped EXE
  PID:4256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "gcleaner.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\gcleaner.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "gcleaner.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:488

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\YYL8D8JJ\dll[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\oA6NuFXOJbUf.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\oA6NuFXOJbUf.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/3948-140-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

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