gcleaner | 97edade3df9d798a47baf5798c5e71e8394ed746d0fcac37cb4b93550e4871af

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2023, 12:16

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General

Target
file.exe
Size 1.7MB
Sample230124-pff3caag23
SHA256 97edade3df9d798a47baf5798c5e71e8394ed746d0fcac37cb4b93550e4871af
MD5 263788f7990dde2dfc29c4cce740b508
SHA1 39b62b5e3cc3720e83bbeff431a2e242e454d7d7
SHA512 aac3a60b9f0713168725f0f21064eea99f517d8d631239f6b06786cd57fe0be3647c976def14d4b2677ab1582bf4221ae6796ed9fb426bcf6f825478eae333f0
SSDEEP 49152:Z36jP+y8Zlm4CQRIQPJLzeoBBCDA+GCpldiSJiZzLCgv2MR:VryK9Cijeo6diS+3v2MR
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
3988	file.tmp
2200	finalrecovery.exe
404	r1NjhMCW3.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 1 IoCs

pid	Process
3988	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\is-T2GDC.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\data\is-6PDR9.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
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-35DC4.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-7ALRK.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-4LVE9.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-FHNGS.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
5016	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2200	finalrecovery.exe
2200	finalrecovery.exe
2200	finalrecovery.exe
2200	finalrecovery.exe
2200	finalrecovery.exe
2200	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5016	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3628 wrote to memory of 3988	3628	file.exe	79
PID 3628 wrote to memory of 3988	3628	file.exe	79
PID 3628 wrote to memory of 3988	3628	file.exe	79
PID 3988 wrote to memory of 2200	3988	file.tmp	80
PID 3988 wrote to memory of 2200	3988	file.tmp	80
PID 3988 wrote to memory of 2200	3988	file.tmp	80
PID 2200 wrote to memory of 404	2200	finalrecovery.exe	81
PID 2200 wrote to memory of 404	2200	finalrecovery.exe	81
PID 2200 wrote to memory of 404	2200	finalrecovery.exe	81
PID 2200 wrote to memory of 3460	2200	finalrecovery.exe	89
PID 2200 wrote to memory of 3460	2200	finalrecovery.exe	89
PID 2200 wrote to memory of 3460	2200	finalrecovery.exe	89
PID 3460 wrote to memory of 5016	3460	cmd.exe	91
PID 3460 wrote to memory of 5016	3460	cmd.exe	91
PID 3460 wrote to memory of 5016	3460	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3628
- C:\Users\Admin\AppData\Local\Temp\is-MG457.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-MG457.tmp\file.tmp" /SL5="$90040,1552056,54272,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:3988
- - 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 use of WriteProcessMemory
    PID:2200
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\r1NjhMCW3.exe
      4⤵
      Executes dropped EXE
      PID:404
  - - 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:3460
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:5016

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 a3b1a75dbc8a93a2df05bbf879dd0c4dd447ccab8137443fc58950564efed1b5
MD5 0f8c92d0a68ceabcdc63e9c2e5acf1da
SHA1 def6f4708f85e785daab8aaf498eeb2f1a5476e2
SHA512 d4e22d82b49d811a0aee2a515d07b8a699c6bd1d2e33cb067d7e93e533b21fca1e879c797850e8b0c1f5beda54646a11ee9bd0f96af2bf95bdaaec14bbe02369
SSDEEP 24576:yLhVdY4ik5pREPelhm/GAidefn/ztwOTq0hx+Yd4ANB9IPbf2Bf43iG:82aUGA5y59
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FezsoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 a3b1a75dbc8a93a2df05bbf879dd0c4dd447ccab8137443fc58950564efed1b5
MD5 0f8c92d0a68ceabcdc63e9c2e5acf1da
SHA1 def6f4708f85e785daab8aaf498eeb2f1a5476e2
SHA512 d4e22d82b49d811a0aee2a515d07b8a699c6bd1d2e33cb067d7e93e533b21fca1e879c797850e8b0c1f5beda54646a11ee9bd0f96af2bf95bdaaec14bbe02369
SSDEEP 24576:yLhVdY4ik5pREPelhm/GAidefn/ztwOTq0hx+Yd4ANB9IPbf2Bf43iG:82aUGA5y59
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-CIL2Q.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-MG457.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-MG457.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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r1NjhMCW3.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\r1NjhMCW3.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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r1NjhMCW3.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\r1NjhMCW3.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/2200-142-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/2200-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2200-155-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/2200-144-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/2200-152-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/2200-143-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/3628-151-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/3628-134-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/3628-132-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/3628-156-0x0000000000400000-0x0000000000414000-memory.dmp

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