gcleaner | b8944a57466cd23b02b462b13134b7980caa8a0c053a4f076435c4a004e831e0

Analysis

max time kernel
91s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2023, 22:31

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General

Target
file.exe
Size 1.8MB
Sample230126-2fcq5sff82
SHA256 b8944a57466cd23b02b462b13134b7980caa8a0c053a4f076435c4a004e831e0
MD5 4081c6172597ab7b0163b130925ad665
SHA1 dc1637b6958c165c86462b8ed63280a95ad07d67
SHA512 120046cfc34edda48091b6c0b721d05b77a38b77291cd58c4d72fd5031c9f23b64e13baf85534b257b1d7f5a0e2c06bc40662a2b619ff0e81c02ae1200ff3f62
SSDEEP 49152:okug+VxuNdnUq1SAV4e3iD1k8bFz6Syr0cbLCgv2MR:hug+V4uAqcIFoSyocPv2MR
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
1968	file.tmp
1164	finalrecovery.exe
5048	H9vE7yZ5Jbgo.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
1968	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-KV5LK.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-BBDD8.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\data\is-4TTLQ.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-6GFU7.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-D2P5Q.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-569F0.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
4180	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1164	finalrecovery.exe
1164	finalrecovery.exe
1164	finalrecovery.exe
1164	finalrecovery.exe
1164	finalrecovery.exe
1164	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4180	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 1968	4960	file.exe	82
PID 4960 wrote to memory of 1968	4960	file.exe	82
PID 4960 wrote to memory of 1968	4960	file.exe	82
PID 1968 wrote to memory of 1164	1968	file.tmp	83
PID 1968 wrote to memory of 1164	1968	file.tmp	83
PID 1968 wrote to memory of 1164	1968	file.tmp	83
PID 1164 wrote to memory of 5048	1164	finalrecovery.exe	86
PID 1164 wrote to memory of 5048	1164	finalrecovery.exe	86
PID 1164 wrote to memory of 5048	1164	finalrecovery.exe	86
PID 1164 wrote to memory of 1828	1164	finalrecovery.exe	92
PID 1164 wrote to memory of 1828	1164	finalrecovery.exe	92
PID 1164 wrote to memory of 1828	1164	finalrecovery.exe	92
PID 1828 wrote to memory of 4180	1828	cmd.exe	94
PID 1828 wrote to memory of 4180	1828	cmd.exe	94
PID 1828 wrote to memory of 4180	1828	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Users\Admin\AppData\Local\Temp\is-D9EK4.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-D9EK4.tmp\file.tmp" /SL5="$C003A,1609947,135168,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:1968
- - 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:1164
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\H9vE7yZ5Jbgo.exe
      4⤵
      Executes dropped EXE
      PID:5048
  - - 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:1828
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4180

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 5873f4d139d9bca47ebb788e807743a54f2b98346472490cdc0bf3db06187e68
MD5 7491d8fedbdc88c2741d34c6072813a5
SHA1 3f702b847464af4b9b71327050ec99410b9c422b
SHA512 8b174ec11c874310fb8734909f21e5512517cfec8e2de7aecb7bf7b3f0f059e607a9afdd1ebab836194c5c9124a88d9905ac55b09d35e918a8707d25199750ff
SSDEEP 24576:8wvPtu1fvHsRF6m/GAiMi6QoycMi9/NFdnmcwJjN:nt5GAvPWwmlN
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FgbsoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 5873f4d139d9bca47ebb788e807743a54f2b98346472490cdc0bf3db06187e68
MD5 7491d8fedbdc88c2741d34c6072813a5
SHA1 3f702b847464af4b9b71327050ec99410b9c422b
SHA512 8b174ec11c874310fb8734909f21e5512517cfec8e2de7aecb7bf7b3f0f059e607a9afdd1ebab836194c5c9124a88d9905ac55b09d35e918a8707d25199750ff
SSDEEP 24576:8wvPtu1fvHsRF6m/GAiMi6QoycMi9/NFdnmcwJjN:nt5GAvPWwmlN
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-3M11V.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-D9EK4.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-D9EK4.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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H9vE7yZ5Jbgo.exe

Path C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\H9vE7yZ5Jbgo.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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H9vE7yZ5Jbgo.exe

Path C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\H9vE7yZ5Jbgo.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/1164-146-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/1164-155-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/1164-145-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/1164-158-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/1164-147-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/1164-151-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4960-154-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4960-140-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4960-135-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4960-159-0x0000000000400000-0x0000000000428000-memory.dmp

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