gcleaner | 5ce3e48a38ca900886358d7dc3ee464098c38b571b45bc7344525d444c73d661

Analysis

max time kernel
117s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
22/01/2023, 06:16

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General

Target
file.exe
Size 2.1MB
Sample230122-g1f9vafd89
SHA256 5ce3e48a38ca900886358d7dc3ee464098c38b571b45bc7344525d444c73d661
MD5 084a1c50d65638bfcefc8b3e056a16dc
SHA1 abcbd393fdc4eaf632e33c009641ba5600382d93
SHA512 4991ba36f544ce5bed086edee9f9fbf75a74c01f781ab54ad8381ac753b1143e81d438c5c6eeafcef55f21f4f6a9a4474d571043425dd055c38b7354afe093a6
SSDEEP 49152:kbKPWT1SGurNDc1N6RHkjwQzsxfOpGA9MMBlw37:8CW2cWRE3sxWGN8a37
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
3912	file.tmp
1184	finalrecovery.exe
2012	dGkcv5z.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
3912	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)\FexsoftFR\FinalRecovery\is-F2SEQ.tmp	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\is-HCGUQ.tmp	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\is-2QC9Q.tmp	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\data\is-1R317.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FexsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\is-6HF6P.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FexsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\is-OHH79.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
2244	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1184	finalrecovery.exe
1184	finalrecovery.exe
1184	finalrecovery.exe
1184	finalrecovery.exe
1184	finalrecovery.exe
1184	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4300 wrote to memory of 3912	4300	file.exe	81
PID 4300 wrote to memory of 3912	4300	file.exe	81
PID 4300 wrote to memory of 3912	4300	file.exe	81
PID 3912 wrote to memory of 1184	3912	file.tmp	82
PID 3912 wrote to memory of 1184	3912	file.tmp	82
PID 3912 wrote to memory of 1184	3912	file.tmp	82
PID 1184 wrote to memory of 2012	1184	finalrecovery.exe	83
PID 1184 wrote to memory of 2012	1184	finalrecovery.exe	83
PID 1184 wrote to memory of 2012	1184	finalrecovery.exe	83
PID 1184 wrote to memory of 4484	1184	finalrecovery.exe	91
PID 1184 wrote to memory of 4484	1184	finalrecovery.exe	91
PID 1184 wrote to memory of 4484	1184	finalrecovery.exe	91
PID 4484 wrote to memory of 2244	4484	cmd.exe	93
PID 4484 wrote to memory of 2244	4484	cmd.exe	93
PID 4484 wrote to memory of 2244	4484	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:4300
- C:\Users\Admin\AppData\Local\Temp\is-ITC2B.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-ITC2B.tmp\file.tmp" /SL5="$A01D6,1896767,211456,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:3912
- - C:\Program Files (x86)\FexsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FexsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1184
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\dGkcv5z.exe
      4⤵
      Executes dropped EXE
      PID:2012
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FexsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4484
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2244

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)\FexsoftFR\FinalRecovery\finalrecovery.exe
Size 1.6MB
SHA256 042279d1bd8ecabfd7238b55928051ce07609d5444b1c4d601fcff9a01f05a1a
MD5 b646c3280eba75dca78afbd97f1fd868
SHA1 ce6cdf183554a78741eb3688caf63c84c6c38d7c
SHA512 07aaa69a7cc3e4e49817aab60c003af65937b499f7264c2f7c7736a5a127bbac7287d5fc9a2dbd284778abc80b37e9129ee70c1aed2ebed2bdea98168e865adb
SSDEEP 24576:3JlNxZqdyIWsnfSUcaaIvufnXpm/G0iaHP+2WBKuMn48RpDAymlw5:pLa98aG0NGV0jDAyF
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FexsoftFR\FinalRecovery\finalrecovery.exe
Size 1.6MB
SHA256 042279d1bd8ecabfd7238b55928051ce07609d5444b1c4d601fcff9a01f05a1a
MD5 b646c3280eba75dca78afbd97f1fd868
SHA1 ce6cdf183554a78741eb3688caf63c84c6c38d7c
SHA512 07aaa69a7cc3e4e49817aab60c003af65937b499f7264c2f7c7736a5a127bbac7287d5fc9a2dbd284778abc80b37e9129ee70c1aed2ebed2bdea98168e865adb
SSDEEP 24576:3JlNxZqdyIWsnfSUcaaIvufnXpm/G0iaHP+2WBKuMn48RpDAymlw5:pLa98aG0NGV0jDAyF
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-ITC2B.tmp\file.tmp
Size 849KB
SHA256 ae9de9f9dbe29fe0996d144850b768c31a132d96da041d2ee0b7009675ec5af0
MD5 779b6034396cfd96041149db13d92b42
SHA1 50611e4249ee9647d5840931f06960bf0ef20ec5
SHA512 33d04621bf43a56db68c5f937548d653290c91120c7ec61babeca4efd20b92a22d2c75423ffc001e91f9e04b544743e2d35412cf7a5f93fea1857a29fe1a6d01
SSDEEP 24576:8tCUA4arPEn37TzH7A6nw9yzeESUFWHc73itXEx9R/:8kdrP837TzH7A6nV7FMcjRT
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-ITC2B.tmp\file.tmp
Size 849KB
SHA256 ae9de9f9dbe29fe0996d144850b768c31a132d96da041d2ee0b7009675ec5af0
MD5 779b6034396cfd96041149db13d92b42
SHA1 50611e4249ee9647d5840931f06960bf0ef20ec5
SHA512 33d04621bf43a56db68c5f937548d653290c91120c7ec61babeca4efd20b92a22d2c75423ffc001e91f9e04b544743e2d35412cf7a5f93fea1857a29fe1a6d01
SSDEEP 24576:8tCUA4arPEn37TzH7A6nw9yzeESUFWHc73itXEx9R/:8kdrP837TzH7A6nV7FMcjRT
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-Q3MCC.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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dGkcv5z.exe

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\dGkcv5z.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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dGkcv5z.exe

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\dGkcv5z.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/1184-143-0x0000000000400000-0x00000000013A5000-memory.dmp

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memory/1184-152-0x0000000000400000-0x00000000013A5000-memory.dmp

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memory/1184-142-0x0000000000400000-0x00000000013A5000-memory.dmp

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memory/1184-155-0x0000000000400000-0x00000000013A5000-memory.dmp

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memory/1184-144-0x0000000000400000-0x00000000013A5000-memory.dmp

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memory/1184-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4300-137-0x0000000000400000-0x000000000043B000-memory.dmp

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memory/4300-151-0x0000000000400000-0x000000000043B000-memory.dmp

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memory/4300-132-0x0000000000400000-0x000000000043B000-memory.dmp

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memory/4300-156-0x0000000000400000-0x000000000043B000-memory.dmp

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