gcleaner | ea3376fdd114508e5cd6a9ded617e4d83416811a77f7d3cdaf3d899012453802

Analysis

max time kernel
81s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2023, 04:47

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General

Target
file.exe
Size 2.1MB
Sample230129-fejbmsbc21
SHA256 ea3376fdd114508e5cd6a9ded617e4d83416811a77f7d3cdaf3d899012453802
MD5 f3c43131e25cb3f7d5b6a47f38d4feb2
SHA1 bca2c1bc224486e8b065b1012063c3b3897fc098
SHA512 e99659a78d8433881fe8dd359e6124f2faf2a5222913ac07752978191c045f9b3bf0e180d885ba23f513177caaedf964b622cc7add5bd874a2fcb06dd8e6d0e1
SSDEEP 49152:okug+Hik7dUcdmlqyfSZYpy0wEYbxgWNY5PwYUsYY+36o2nWwyHZ8BLCgv2MR:hug+X2+mlqMAKK6Z+YUsYYXjnWrStv2Y
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
5088	file.tmp
1408	finalrecovery.exe
3668	Hv9Pj.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 3 IoCs

pid	Process
5088	file.tmp
5088	file.tmp
5088	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)\FgesoftFR\FinalRecovery\is-T0RDK.tmp	file.tmp
File created	C:\Program Files (x86)\FgesoftFR\FinalRecovery\is-CO6I8.tmp	file.tmp
File created	C:\Program Files (x86)\FgesoftFR\FinalRecovery\is-QJ0AO.tmp	file.tmp
File created	C:\Program Files (x86)\FgesoftFR\FinalRecovery\is-J0JBG.tmp	file.tmp
File created	C:\Program Files (x86)\FgesoftFR\FinalRecovery\data\is-9OLEF.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FgesoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FgesoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FgesoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgesoftFR\FinalRecovery\is-U2FVU.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
4800	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1408	finalrecovery.exe
1408	finalrecovery.exe
1408	finalrecovery.exe
1408	finalrecovery.exe
1408	finalrecovery.exe
1408	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4800	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 5088	5072	file.exe	83
PID 5072 wrote to memory of 5088	5072	file.exe	83
PID 5072 wrote to memory of 5088	5072	file.exe	83
PID 5088 wrote to memory of 1408	5088	file.tmp	84
PID 5088 wrote to memory of 1408	5088	file.tmp	84
PID 5088 wrote to memory of 1408	5088	file.tmp	84
PID 1408 wrote to memory of 3668	1408	finalrecovery.exe	85
PID 1408 wrote to memory of 3668	1408	finalrecovery.exe	85
PID 1408 wrote to memory of 3668	1408	finalrecovery.exe	85
PID 1408 wrote to memory of 3444	1408	finalrecovery.exe	93
PID 1408 wrote to memory of 3444	1408	finalrecovery.exe	93
PID 1408 wrote to memory of 3444	1408	finalrecovery.exe	93
PID 3444 wrote to memory of 4800	3444	cmd.exe	95
PID 3444 wrote to memory of 4800	3444	cmd.exe	95
PID 3444 wrote to memory of 4800	3444	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Users\Admin\AppData\Local\Temp\is-5AR71.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-5AR71.tmp\file.tmp" /SL5="$B01EE,1977417,135168,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:5088
- - C:\Program Files (x86)\FgesoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FgesoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1408
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\Hv9Pj.exe
      4⤵
      Executes dropped EXE
      PID:3668
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FgesoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3444
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4800

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)\FgesoftFR\FinalRecovery\finalrecovery.exe
Size 1.5MB
SHA256 bf1ff79e33571ce8bc4827c565a6cf372c5c444c32c44dea15e8c64ded9bd2d2
MD5 0e6fffa026f8ad6599605f314b46a2ec
SHA1 553a072330c08b0d370f3e0071a05ba9a9ae49bb
SHA512 77cc38a367191281c9adccddb87bc43a035e97270356fc3cfbddb2b047da6ebe938ab42bac8ff96d88b994b91bcd2d33727ecd8e14607c795464548149307f16
SSDEEP 24576:RybtMYRxJvXyKD+ddHJQq0nyjY8N76LLo05:cpBVR
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FgesoftFR\FinalRecovery\finalrecovery.exe
Size 1.5MB
SHA256 bf1ff79e33571ce8bc4827c565a6cf372c5c444c32c44dea15e8c64ded9bd2d2
MD5 0e6fffa026f8ad6599605f314b46a2ec
SHA1 553a072330c08b0d370f3e0071a05ba9a9ae49bb
SHA512 77cc38a367191281c9adccddb87bc43a035e97270356fc3cfbddb2b047da6ebe938ab42bac8ff96d88b994b91bcd2d33727ecd8e14607c795464548149307f16
SSDEEP 24576:RybtMYRxJvXyKD+ddHJQq0nyjY8N76LLo05:cpBVR
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-5AR71.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-5AR71.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-D3012.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

_isdecmp.dll

Path C:\Users\Admin\AppData\Local\Temp\is-D3012.tmp\_isetup\_isdecmp.dll
Size 13KB
SHA256 e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
MD5 a813d18268affd4763dde940246dc7e5
SHA1 c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA512 b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
SSDEEP 384:BXvhMwoSitz/bjx7yxnbdn+EHvbsHoOODCg:BZ7FEAbd+EDsIO
MD5 SHA1 SHA512 SSDEEP

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_isdecmp.dll

Path C:\Users\Admin\AppData\Local\Temp\is-D3012.tmp\_isetup\_isdecmp.dll
Size 13KB
SHA256 e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
MD5 a813d18268affd4763dde940246dc7e5
SHA1 c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA512 b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
SSDEEP 384:BXvhMwoSitz/bjx7yxnbdn+EHvbsHoOODCg:BZ7FEAbd+EDsIO
MD5 SHA1 SHA512 SSDEEP

Submit Download

Hv9Pj.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\Hv9Pj.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

Hv9Pj.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\Hv9Pj.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/1408-146-0x0000000000400000-0x0000000001389000-memory.dmp

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memory/1408-154-0x0000000000400000-0x0000000001389000-memory.dmp

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memory/1408-157-0x0000000000400000-0x0000000001389000-memory.dmp

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memory/1408-145-0x0000000000400000-0x0000000001389000-memory.dmp

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memory/1408-147-0x0000000000400000-0x0000000001389000-memory.dmp

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memory/1408-151-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/5072-137-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/5072-132-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/5072-158-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/5088-140-0x0000000002481000-0x0000000002483000-memory.dmp

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