gcleaner | e1e2a35be840e40050049a20dc40d045d3feb80ccd8847703d2f7f1500e4e058

Analysis

max time kernel
90s
max time network
139s
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, 17:16

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General

Target
file.exe
Size 1.9MB
Sample230203-vs48lagc59
SHA256 e1e2a35be840e40050049a20dc40d045d3feb80ccd8847703d2f7f1500e4e058
MD5 0feee67b0ac84a2db297e2b78ad8c676
SHA1 2ceb5bb66343ff3a1cebacd4c61fb625eecaeeda
SHA512 5c4d44828d4f8723e8edcf15530c9c7aec1209cade08d9321337e9421381aa17e1f76f75c0f546fc95ea0ac715b043d5992fb009a47231f43c0f8bb3162d5e41
SSDEEP 49152:ygvTWEpy5lmeU7PV/Iox0Tqp4ZMDHLCgv2MR:TvTW2yTZcPxIoxU7Z+v2MR
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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Executes dropped EXE 3 IoCs

pid	Process
4312	file.tmp
3508	finalrecovery.exe
3808	IvCMSJUkq.exe

Loads dropped DLL 1 IoCs

pid	Process
4312	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 opened for modification	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-D8GN9.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-RBTK2.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\data\is-IFCF6.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-GTJIL.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-7B1UH.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-2EBM2.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
3828	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3508	finalrecovery.exe
3508	finalrecovery.exe
3508	finalrecovery.exe
3508	finalrecovery.exe
3508	finalrecovery.exe
3508	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3828	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4644 wrote to memory of 4312	4644	file.exe	81
PID 4644 wrote to memory of 4312	4644	file.exe	81
PID 4644 wrote to memory of 4312	4644	file.exe	81
PID 4312 wrote to memory of 3508	4312	file.tmp	82
PID 4312 wrote to memory of 3508	4312	file.tmp	82
PID 4312 wrote to memory of 3508	4312	file.tmp	82
PID 3508 wrote to memory of 3808	3508	finalrecovery.exe	85
PID 3508 wrote to memory of 3808	3508	finalrecovery.exe	85
PID 3508 wrote to memory of 3808	3508	finalrecovery.exe	85
PID 3508 wrote to memory of 816	3508	finalrecovery.exe	91
PID 3508 wrote to memory of 816	3508	finalrecovery.exe	91
PID 3508 wrote to memory of 816	3508	finalrecovery.exe	91
PID 816 wrote to memory of 3828	816	cmd.exe	93
PID 816 wrote to memory of 3828	816	cmd.exe	93
PID 816 wrote to memory of 3828	816	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:4644
- C:\Users\Admin\AppData\Local\Temp\is-AOFV7.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-AOFV7.tmp\file.tmp" /SL5="$701D8,1794072,73216,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:4312
- - 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:3508
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\IvCMSJUkq.exe
      4⤵
      Executes dropped EXE
      PID:3808
  - - 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:816
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3828

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 6e602a0393359cda64cdeb17699131c877059a03322aa6f9a69308197e39aac2
MD5 0568b6a664582a1482277b26ae313092
SHA1 0e353ea5cdc009286ad7222f8c967278d006d6f0
SHA512 ab76594d5f7eac16b8e69c4b8ef4f29f4d1bb7e018d91e680a87105b067d1bceece2ae61d9a371bd8594a9e828394f4e0f2c1631f942721a359b3c95fedf4992
SSDEEP 24576:fBhBe16u9iRWySjfqpBXnpE5tdbL0+7YIDx6Lx31RDt/8hB+lw2mCFX:fBhBe1P9iRWySs9pILtO3dp9D
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe
Size 1.8MB
SHA256 6e602a0393359cda64cdeb17699131c877059a03322aa6f9a69308197e39aac2
MD5 0568b6a664582a1482277b26ae313092
SHA1 0e353ea5cdc009286ad7222f8c967278d006d6f0
SHA512 ab76594d5f7eac16b8e69c4b8ef4f29f4d1bb7e018d91e680a87105b067d1bceece2ae61d9a371bd8594a9e828394f4e0f2c1631f942721a359b3c95fedf4992
SSDEEP 24576:fBhBe16u9iRWySjfqpBXnpE5tdbL0+7YIDx6Lx31RDt/8hB+lw2mCFX:fBhBe1P9iRWySs9pILtO3dp9D
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-AOFV7.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-AOFV7.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-GOSOP.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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IvCMSJUkq.exe

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

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\IvCMSJUkq.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/3508-150-0x0000000000400000-0x00000000013D8000-memory.dmp

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memory/3508-142-0x0000000000400000-0x00000000013D8000-memory.dmp

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memory/3508-143-0x0000000000400000-0x00000000013D8000-memory.dmp

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memory/3508-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3508-153-0x0000000000400000-0x00000000013D8000-memory.dmp

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memory/4644-138-0x0000000000400000-0x0000000000419000-memory.dmp

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memory/4644-132-0x0000000000400000-0x0000000000419000-memory.dmp

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memory/4644-154-0x0000000000400000-0x0000000000419000-memory.dmp

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