gcleaner | 42f0b022f20356e8eaa48856c2734df304b1d5b73ad75432bc2f0746f8f32403

Analysis

max time kernel
86s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2023, 20:01

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General

Target
file.exe
Size 2.0MB
Sample230202-yrh6hsfb49
SHA256 42f0b022f20356e8eaa48856c2734df304b1d5b73ad75432bc2f0746f8f32403
MD5 d39cd68f7a07820a8d717669b807f9f2
SHA1 8208da9f93d1a6682cd2fe007bd2e4fbc9896fc5
SHA512 9e96138d3e5702b2f329bab01188abd23b45eacbee655270a0ae3190efc4f8cbbe9caea1f20f4e0c14ff56cbba5241951d9e8cae34400e64c7f5871e420d382b
SSDEEP 49152:bghMCW8ui0RxSD39nhBtfw3Q+geo5w7ugJe55eR+3LCgv2MR:cWCMi0Rxo39nJfw3Co055pv2MR
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

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

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Executes dropped EXE 3 IoCs

pid	Process
2668	file.tmp
4952	finalrecovery.exe
4844	5wUy0tyHImrny.exe

Loads dropped DLL 1 IoCs

pid	Process
2668	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)\FHHsoftFR\FinalRecovery\data\is-VD24M.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-ROGGH.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-P003Q.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-NKGHG.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-IRMO5.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-IJJIA.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
3324	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4952	finalrecovery.exe
4952	finalrecovery.exe
4952	finalrecovery.exe
4952	finalrecovery.exe
4952	finalrecovery.exe
4952	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3324	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 2668	4408	file.exe	82
PID 4408 wrote to memory of 2668	4408	file.exe	82
PID 4408 wrote to memory of 2668	4408	file.exe	82
PID 2668 wrote to memory of 4952	2668	file.tmp	83
PID 2668 wrote to memory of 4952	2668	file.tmp	83
PID 2668 wrote to memory of 4952	2668	file.tmp	83
PID 4952 wrote to memory of 4844	4952	finalrecovery.exe	84
PID 4952 wrote to memory of 4844	4952	finalrecovery.exe	84
PID 4952 wrote to memory of 4844	4952	finalrecovery.exe	84
PID 4952 wrote to memory of 1424	4952	finalrecovery.exe	86
PID 4952 wrote to memory of 1424	4952	finalrecovery.exe	86
PID 4952 wrote to memory of 1424	4952	finalrecovery.exe	86
PID 1424 wrote to memory of 3324	1424	cmd.exe	88
PID 1424 wrote to memory of 3324	1424	cmd.exe	88
PID 1424 wrote to memory of 3324	1424	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Users\Admin\AppData\Local\Temp\is-CVF9B.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-CVF9B.tmp\file.tmp" /SL5="$701C6,1835995,71680,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:2668
- - C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4952
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\5wUy0tyHImrny.exe
      4⤵
      Executes dropped EXE
      PID:4844
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1424
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3324

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

finalrecovery.exe

Path C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe
Size 1.9MB
SHA256 c8549bb86574ea2a4841130813980a50474f478a078ac59abe09ba0df5c63ffc
MD5 f2a1504f5173cbf7bca07c493f39f980
SHA1 232c9aceb216a88fad199cee0a33f51023e75493
SHA512 6cc34eeab9737022250b8eeb277488d65d76638e7dc856665142b7176c4810349fb8317bda06fb12550de18012ab66ca934c80767e41d30e3394470458e5d8e1
SSDEEP 24576:XCmyM281B6xWXmnVUvZQac8XWFTiiaTC6lRCksYlCNM6QnwylGaWnhSRtMKfi:XCmyM281BqWwpxibUYloilyTD
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe
Size 1.9MB
SHA256 c8549bb86574ea2a4841130813980a50474f478a078ac59abe09ba0df5c63ffc
MD5 f2a1504f5173cbf7bca07c493f39f980
SHA1 232c9aceb216a88fad199cee0a33f51023e75493
SHA512 6cc34eeab9737022250b8eeb277488d65d76638e7dc856665142b7176c4810349fb8317bda06fb12550de18012ab66ca934c80767e41d30e3394470458e5d8e1
SSDEEP 24576:XCmyM281B6xWXmnVUvZQac8XWFTiiaTC6lRCksYlCNM6QnwylGaWnhSRtMKfi:XCmyM281BqWwpxibUYloilyTD
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-4LFVA.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-CVF9B.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-CVF9B.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

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5wUy0tyHImrny.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\5wUy0tyHImrny.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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5wUy0tyHImrny.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\5wUy0tyHImrny.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/4408-138-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/4408-154-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/4408-132-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/4952-143-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/4952-150-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/4952-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4952-142-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/4952-153-0x0000000000400000-0x00000000013E8000-memory.dmp

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