gcleaner | 9f484b215311ba5c090332654cadb00929da7c39e06cda9b6faa7ee1c3c99221

General

Target

file.exe
Size

2.1MB
MD5

cad029777fef3d7957a55990aab0e7e1
SHA1

19f5e8b4a6cd5cc66ee6fb9e7bd9b18cadf582da
SHA256

9f484b215311ba5c090332654cadb00929da7c39e06cda9b6faa7ee1c3c99221
SHA512

44db165b4b1aa8e6b856a256a4d4e167ef9702b8429abab15e3251b5a6ab947b3e6c2858b9ffb9cc2ae7d55cda8444808a564df8945b706d4773a1f8b8ea384a
SSDEEP

49152:icPLnQDtfb4gr955j2oJmKD98B5jsHxakh2ewmOoLCgv2MR:XPLnQhfb4ml1PDeBC2ewmOgv2MR

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

45.12.253.56

45.12.253.72

45.12.253.98

45.12.253.75

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

Executes dropped EXE 3 IoCs

pid	Process
984	file.tmp
2708	finalrecovery.exe
1924	bTSABjoH13D.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	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
984	file.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\FHGsoftFR\FinalRecovery\is-FHK1B.tmp	file.tmp
File created	C:\Program Files (x86)\FHGsoftFR\FinalRecovery\is-3H4JC.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHGsoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FHGsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FHGsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHGsoftFR\FinalRecovery\is-S87FK.tmp	file.tmp
File created	C:\Program Files (x86)\FHGsoftFR\FinalRecovery\is-J2Q3A.tmp	file.tmp
File created	C:\Program Files (x86)\FHGsoftFR\FinalRecovery\is-RBM2U.tmp	file.tmp
File created	C:\Program Files (x86)\FHGsoftFR\FinalRecovery\data\is-V420O.tmp	file.tmp

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

pid	Process
5012	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2708	finalrecovery.exe
2708	finalrecovery.exe
2708	finalrecovery.exe
2708	finalrecovery.exe
2708	finalrecovery.exe
2708	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5012	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 984	1736	file.exe	81
PID 1736 wrote to memory of 984	1736	file.exe	81
PID 1736 wrote to memory of 984	1736	file.exe	81
PID 984 wrote to memory of 2708	984	file.tmp	82
PID 984 wrote to memory of 2708	984	file.tmp	82
PID 984 wrote to memory of 2708	984	file.tmp	82
PID 2708 wrote to memory of 1924	2708	finalrecovery.exe	83
PID 2708 wrote to memory of 1924	2708	finalrecovery.exe	83
PID 2708 wrote to memory of 1924	2708	finalrecovery.exe	83
PID 2708 wrote to memory of 1660	2708	finalrecovery.exe	84
PID 2708 wrote to memory of 1660	2708	finalrecovery.exe	84
PID 2708 wrote to memory of 1660	2708	finalrecovery.exe	84
PID 1660 wrote to memory of 5012	1660	cmd.exe	86
PID 1660 wrote to memory of 5012	1660	cmd.exe	86
PID 1660 wrote to memory of 5012	1660	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Local\Temp\is-TJDCM.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-TJDCM.tmp\file.tmp" /SL5="$D0064,2000995,198656,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:984
- - C:\Program Files (x86)\FHGsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FHGsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2708
  - - C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\bTSABjoH13D.exe
      4⤵
      Executes dropped EXE
      PID:1924
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FHGsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1660
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:5012

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\FHGsoftFR\FinalRecovery\finalrecovery.exe

Filesize
1.9MB

MD5
7fa1449243a8cf8c443f4ce79d67a8e1

SHA1
a6b963f97878ce258f4f4faa4806b3615ddc1f66

SHA256
a67998609b847449e52016101f9b25ea711397c29a35158a3fa281c634c38ab5

SHA512
d78fcf8c52669498bc6867b24e4e89376fceea264fbe3f655d39c28b41a6e9d699ebcdffea5dd20d2ae94fe9c559a71a83cfda5a4167bfd42202e84ce3472246

Download Submit
C:\Program Files (x86)\FHGsoftFR\FinalRecovery\finalrecovery.exe

Filesize
1.9MB

MD5
7fa1449243a8cf8c443f4ce79d67a8e1

SHA1
a6b963f97878ce258f4f4faa4806b3615ddc1f66

SHA256
a67998609b847449e52016101f9b25ea711397c29a35158a3fa281c634c38ab5

SHA512
d78fcf8c52669498bc6867b24e4e89376fceea264fbe3f655d39c28b41a6e9d699ebcdffea5dd20d2ae94fe9c559a71a83cfda5a4167bfd42202e84ce3472246

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3O2EB.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-TJDCM.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-TJDCM.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\bTSABjoH13D.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\bTSABjoH13D.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1736-137-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1736-156-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1736-144-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1736-132-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2708-143-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/2708-145-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/2708-149-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2708-152-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/2708-154-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/2708-142-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download

Analysis

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