gcleaner | 1818ff8e61e60b2bf7314c8d2267d1e424f29fca6b1c92c0d9f68c5d4dfe7e64

Analysis

max time kernel
127s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2023, 17:16

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General

Target
file.exe
Size 1.7MB
Sample230124-vs4xtsed5y
SHA256 1818ff8e61e60b2bf7314c8d2267d1e424f29fca6b1c92c0d9f68c5d4dfe7e64
MD5 096fd68ae9d805649ca3ae40d377081d
SHA1 50236e9a5980c83b9a3c79645d2856ffad8de07f
SHA512 1a8c2135daa13427d08822b2a19e17a0d7c29c129c6ebc825df22fceee7c42cd4765f135a3de32afc4cc677a765560267f037a5f9ddeb3e9b31745c6f300f35c
SSDEEP 49152:ZbLsKwc935W/BDTbM0Do4R4u62bYJLCgv2MR:tLsnc98UYmRlv2MR
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
4280	file.tmp
4812	finalrecovery.exe
932	MTvqQuLQ.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
4280	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)\FezsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-IJN1P.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-CCA0O.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-ACA6T.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-IDH36.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-Q34LK.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\data\is-AAVH0.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FezsoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FezsoftFR\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
2488	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4812	finalrecovery.exe
4812	finalrecovery.exe
4812	finalrecovery.exe
4812	finalrecovery.exe
4812	finalrecovery.exe
4812	finalrecovery.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4812	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2488	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 4280	1800	file.exe	81
PID 1800 wrote to memory of 4280	1800	file.exe	81
PID 1800 wrote to memory of 4280	1800	file.exe	81
PID 4280 wrote to memory of 4812	4280	file.tmp	82
PID 4280 wrote to memory of 4812	4280	file.tmp	82
PID 4280 wrote to memory of 4812	4280	file.tmp	82
PID 4812 wrote to memory of 932	4812	finalrecovery.exe	83
PID 4812 wrote to memory of 932	4812	finalrecovery.exe	83
PID 4812 wrote to memory of 932	4812	finalrecovery.exe	83
PID 4812 wrote to memory of 4080	4812	finalrecovery.exe	91
PID 4812 wrote to memory of 4080	4812	finalrecovery.exe	91
PID 4812 wrote to memory of 4080	4812	finalrecovery.exe	91
PID 4080 wrote to memory of 2488	4080	cmd.exe	93
PID 4080 wrote to memory of 2488	4080	cmd.exe	93
PID 4080 wrote to memory of 2488	4080	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\is-T0940.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-T0940.tmp\file.tmp" /SL5="$10004A,1567342,54272,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:4280
- - C:\Program Files (x86)\FezsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FezsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of WriteProcessMemory
    PID:4812
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\MTvqQuLQ.exe
      4⤵
      Executes dropped EXE
      PID:932
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FezsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4080
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2488

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)\FezsoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 ccea76539a7fdaaa1ac06b1f5d9618f2ce9065336fad044d37e1abbd5ce2e450
MD5 234410a49392234c10d6a008bd9c74f9
SHA1 ab22cd680b44e9de803dcf6bc20d587b0f706f6b
SHA512 7a36465070753d9541d95cfb94c00c40a8fe04c9a8e025ca24f3e16fc7a228122e44b5d78672fcfba69993d34af0ab1166cb47c2e5bab4ef0d7317fa2fa3b0b8
SSDEEP 24576:3hCTnhDoss/oVTVXEfym/GAiAYf01GC+sbmLwEM6womhlbr5z8uXxtH7cLl:xPsswvEpGAy499lALl
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FezsoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 ccea76539a7fdaaa1ac06b1f5d9618f2ce9065336fad044d37e1abbd5ce2e450
MD5 234410a49392234c10d6a008bd9c74f9
SHA1 ab22cd680b44e9de803dcf6bc20d587b0f706f6b
SHA512 7a36465070753d9541d95cfb94c00c40a8fe04c9a8e025ca24f3e16fc7a228122e44b5d78672fcfba69993d34af0ab1166cb47c2e5bab4ef0d7317fa2fa3b0b8
SSDEEP 24576:3hCTnhDoss/oVTVXEfym/GAiAYf01GC+sbmLwEM6womhlbr5z8uXxtH7cLl:xPsswvEpGAy499lALl
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-5K9U7.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-T0940.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-T0940.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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MTvqQuLQ.exe

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

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\MTvqQuLQ.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/1800-154-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1800-132-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1800-138-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4812-143-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/4812-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4812-147-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/4812-142-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/4812-153-0x0000000000400000-0x0000000001343000-memory.dmp

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