gcleaner | 964ee6fa2f1f7f6ad1a8fe2378f6869efcaf024ca39e65f3a61e1f95c917b021

Analysis

max time kernel
91s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2023, 03:46

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General

Target
file.exe
Size 1.8MB
Sample230126-ebmdfscd66
SHA256 964ee6fa2f1f7f6ad1a8fe2378f6869efcaf024ca39e65f3a61e1f95c917b021
MD5 fbc14d69dffa7d25c9cc63793a036cc2
SHA1 d643b987c697daf8eb0b8dc6479b125f3705e99f
SHA512 3a387fd48f5d95e85102b278c9a69bcd3eb404940eb495aee9ac864eacaa8e6072e3d87289e13022a9e6922f0cb23878569b6cd2ec6f20273258d47ac9f90552
SSDEEP 49152:ZQug+JOrRLJ1Pq382W/DiPgAOaNowf62LqkOc8LCgv2MR:Wug+GRfq3LWrijowpLqk/8v2MR
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

Executes dropped EXE 3 IoCs

pid	Process
2572	file.tmp
4192	finalrecovery.exe
4708	Gm5rUhqrg.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
2572	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)\FgbsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-1FUJ7.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-LFEOH.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-PAMB7.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-5VP5B.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-9U6ON.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\data\is-LHIPQ.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\finalrecovery.exe	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
3536	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4192	finalrecovery.exe
4192	finalrecovery.exe
4192	finalrecovery.exe
4192	finalrecovery.exe
4192	finalrecovery.exe
4192	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3536	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4652 wrote to memory of 2572	4652	file.exe	79
PID 4652 wrote to memory of 2572	4652	file.exe	79
PID 4652 wrote to memory of 2572	4652	file.exe	79
PID 2572 wrote to memory of 4192	2572	file.tmp	80
PID 2572 wrote to memory of 4192	2572	file.tmp	80
PID 2572 wrote to memory of 4192	2572	file.tmp	80
PID 4192 wrote to memory of 4708	4192	finalrecovery.exe	81
PID 4192 wrote to memory of 4708	4192	finalrecovery.exe	81
PID 4192 wrote to memory of 4708	4192	finalrecovery.exe	81
PID 4192 wrote to memory of 1456	4192	finalrecovery.exe	89
PID 4192 wrote to memory of 1456	4192	finalrecovery.exe	89
PID 4192 wrote to memory of 1456	4192	finalrecovery.exe	89
PID 1456 wrote to memory of 3536	1456	cmd.exe	91
PID 1456 wrote to memory of 3536	1456	cmd.exe	91
PID 1456 wrote to memory of 3536	1456	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4652
- C:\Users\Admin\AppData\Local\Temp\is-GD0AD.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-GD0AD.tmp\file.tmp" /SL5="$801E2,1616408,134656,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:2572
- - C:\Program Files (x86)\FgbsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FgbsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4192
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\Gm5rUhqrg.exe
      4⤵
      Executes dropped EXE
      PID:4708
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FgbsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1456
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3536

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)\FgbsoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 a3248dd4d3f04d68e62247bab63d5078ebebb5c558298420317f5da9d6db37ad
MD5 41717e1ac304124178693f1cc5c0e12a
SHA1 ec0de529050670edcdb219675f14219b3c4d0ef6
SHA512 b27f7bb9569613fa0a416aad2c183873cf902d6b9dc4842f2c4afb2a79a549dca688c79d698c865336585b378241f2e9faa97aa186cdf2daad0decbec85cbb12
SSDEEP 24576:qjGQwm5pnQr1CrT94m/GAiWVvCA2B8sHXeCvBqH/hGtUvmZyW:RmEsXGAn2BNOCBHZz
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FgbsoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 a3248dd4d3f04d68e62247bab63d5078ebebb5c558298420317f5da9d6db37ad
MD5 41717e1ac304124178693f1cc5c0e12a
SHA1 ec0de529050670edcdb219675f14219b3c4d0ef6
SHA512 b27f7bb9569613fa0a416aad2c183873cf902d6b9dc4842f2c4afb2a79a549dca688c79d698c865336585b378241f2e9faa97aa186cdf2daad0decbec85cbb12
SSDEEP 24576:qjGQwm5pnQr1CrT94m/GAiWVvCA2B8sHXeCvBqH/hGtUvmZyW:RmEsXGAn2BNOCBHZz
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-GD0AD.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-GD0AD.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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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-LVQS2.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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Gm5rUhqrg.exe

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\Gm5rUhqrg.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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Gm5rUhqrg.exe

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\Gm5rUhqrg.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/4192-143-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/4192-144-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/4192-142-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/4192-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4192-152-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/4192-155-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/4652-132-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4652-151-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4652-135-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4652-156-0x0000000000400000-0x0000000000428000-memory.dmp

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