gcleaner | a663f14467779f428b8476d5fe7670cbb67ea97ed3d4b1310c01b3cfaf313d3b

Analysis

max time kernel
91s
max time network
109s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2023, 14:02

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General

Target
file.exe
Size 2.0MB
Sample230203-rb5k9abb41
SHA256 a663f14467779f428b8476d5fe7670cbb67ea97ed3d4b1310c01b3cfaf313d3b
MD5 7746d3c72c53d8c7edb098b992483e5f
SHA1 d09e67dd2a3e87d0dd651316cc86d72fe7bcc92d
SHA512 4026bea19707440f3c05d2331aa07a4d45a377b28fa7394dd9660b32298e7e53a808223148e1bc6c59374305919b4bed752190dfe4bd2934e0b76cb365eadff5
SSDEEP 49152:ygmo6pnr7/K97bdbKuDcw3D2/efNLCgv2MR:Tepnr2931KuDcw3oGv2MR
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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Executes dropped EXE 3 IoCs

pid	Process
1480	file.tmp
1832	finalrecovery.exe
1808	YGV4GatxSk.exe

Loads dropped DLL 1 IoCs

pid	Process
1480	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)\FHIsoftFR\FinalRecovery\is-FB7PD.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-EBM9H.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\data\is-UHILC.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-NSU45.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-VPBLL.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-IMGC9.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
4860	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1832	finalrecovery.exe
1832	finalrecovery.exe
1832	finalrecovery.exe
1832	finalrecovery.exe
1832	finalrecovery.exe
1832	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4860	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 1480	2480	file.exe	80
PID 2480 wrote to memory of 1480	2480	file.exe	80
PID 2480 wrote to memory of 1480	2480	file.exe	80
PID 1480 wrote to memory of 1832	1480	file.tmp	81
PID 1480 wrote to memory of 1832	1480	file.tmp	81
PID 1480 wrote to memory of 1832	1480	file.tmp	81
PID 1832 wrote to memory of 1808	1832	finalrecovery.exe	82
PID 1832 wrote to memory of 1808	1832	finalrecovery.exe	82
PID 1832 wrote to memory of 1808	1832	finalrecovery.exe	82
PID 1832 wrote to memory of 2552	1832	finalrecovery.exe	90
PID 1832 wrote to memory of 2552	1832	finalrecovery.exe	90
PID 1832 wrote to memory of 2552	1832	finalrecovery.exe	90
PID 2552 wrote to memory of 4860	2552	cmd.exe	92
PID 2552 wrote to memory of 4860	2552	cmd.exe	92
PID 2552 wrote to memory of 4860	2552	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Users\Admin\AppData\Local\Temp\is-9MBAS.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-9MBAS.tmp\file.tmp" /SL5="$80060,1826765,73216,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:1480
- - C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1832
  - - C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\YGV4GatxSk.exe
      4⤵
      Executes dropped EXE
      PID:1808
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2552
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4860

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)\FHIsoftFR\FinalRecovery\finalrecovery.exe
Size 1.8MB
SHA256 ba516ebc8300b969f7f1fdb7a440c453c4b40928ed8841e70dfaf5c669bb5e41
MD5 4b2df2f78faaab5c7d72ee0afd0e73dd
SHA1 008c63fe7e4cef624a9284bc96fd94cc139959ee
SHA512 b4034e046c738063b0670b97b542917a626500ca34aa2d3e3816053f918dae94e8e87b83590a7cafb097831c5fad0d9b6b5ca707abd09fd292815f73d3c45f8c
SSDEEP 49152:awmPnSVyLP4n/fxUyORORj9YIPrqo9llu:awmPnSVyLP4n/fxUyORO19YIzvK
MD5 SHA1 SHA512 SSDEEP

Submit Download

finalrecovery.exe

Path C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe
Size 1.8MB
SHA256 ba516ebc8300b969f7f1fdb7a440c453c4b40928ed8841e70dfaf5c669bb5e41
MD5 4b2df2f78faaab5c7d72ee0afd0e73dd
SHA1 008c63fe7e4cef624a9284bc96fd94cc139959ee
SHA512 b4034e046c738063b0670b97b542917a626500ca34aa2d3e3816053f918dae94e8e87b83590a7cafb097831c5fad0d9b6b5ca707abd09fd292815f73d3c45f8c
SSDEEP 49152:awmPnSVyLP4n/fxUyORORj9YIPrqo9llu:awmPnSVyLP4n/fxUyORO19YIzvK
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

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

Submit Download

file.tmp

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

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-J1VT9.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

YGV4GatxSk.exe

Path C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\YGV4GatxSk.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

YGV4GatxSk.exe

Path C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\YGV4GatxSk.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1832-143-0x0000000000400000-0x00000000013D8000-memory.dmp

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memory/1832-142-0x0000000000400000-0x00000000013D8000-memory.dmp

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memory/1832-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1832-150-0x0000000000400000-0x00000000013D8000-memory.dmp

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memory/1832-153-0x0000000000400000-0x00000000013D8000-memory.dmp

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memory/2480-132-0x0000000000400000-0x0000000000419000-memory.dmp

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memory/2480-137-0x0000000000400000-0x0000000000419000-memory.dmp

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memory/2480-154-0x0000000000400000-0x0000000000419000-memory.dmp

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