gcleaner | 6864b720e1e7eaf4c8c013667a61430b6084a5142793f64fb601103d329822d9

Analysis

max time kernel
112s
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
27/01/2023, 14:17

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General

Target
file.exe
Size 1.9MB
Sample230127-rlpyjsda71
SHA256 6864b720e1e7eaf4c8c013667a61430b6084a5142793f64fb601103d329822d9
MD5 119c68e8ee9501cd95fdeb4420e4dc12
SHA1 c323cf50764e320c74c6c494347d06d3dfb58f8f
SHA512 4814ec347f3acd240c90398e35236e6d924ddda7a87dfd04545d6304d7b7b954388a0bcdfded7f122fc188ded0bb30be10f39f9f5fef697e669f3b6a5755c86d
SSDEEP 49152:okug+hTJFH/gZVa1urcgRrHO522HsNCZ9MRDO6N6g2gXLCgv2MR:hug+hXWf79O5JTMRDt6gvv2MR
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
3328	file.tmp
3696	finalrecovery.exe
4848	9jG4Uen63APn3I.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
3328	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)\FgcsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-L8UUJ.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-VTEIV.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\data\is-PLVRU.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-7K1KJ.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-7BPMH.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-A0N73.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
2312	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3696	finalrecovery.exe
3696	finalrecovery.exe
3696	finalrecovery.exe
3696	finalrecovery.exe
3696	finalrecovery.exe
3696	finalrecovery.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3696	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2312	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4572 wrote to memory of 3328	4572	file.exe	79
PID 4572 wrote to memory of 3328	4572	file.exe	79
PID 4572 wrote to memory of 3328	4572	file.exe	79
PID 3328 wrote to memory of 3696	3328	file.tmp	80
PID 3328 wrote to memory of 3696	3328	file.tmp	80
PID 3328 wrote to memory of 3696	3328	file.tmp	80
PID 3696 wrote to memory of 4848	3696	finalrecovery.exe	81
PID 3696 wrote to memory of 4848	3696	finalrecovery.exe	81
PID 3696 wrote to memory of 4848	3696	finalrecovery.exe	81
PID 3696 wrote to memory of 3984	3696	finalrecovery.exe	89
PID 3696 wrote to memory of 3984	3696	finalrecovery.exe	89
PID 3696 wrote to memory of 3984	3696	finalrecovery.exe	89
PID 3984 wrote to memory of 2312	3984	cmd.exe	91
PID 3984 wrote to memory of 2312	3984	cmd.exe	91
PID 3984 wrote to memory of 2312	3984	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:4572
- C:\Users\Admin\AppData\Local\Temp\is-DL6UB.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-DL6UB.tmp\file.tmp" /SL5="$90048,1707490,135168,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:3328
- - C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of WriteProcessMemory
    PID:3696
  - - C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\9jG4Uen63APn3I.exe
      4⤵
      Executes dropped EXE
      PID:4848
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3984
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2312

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)\FgcsoftFR\FinalRecovery\finalrecovery.exe
Size 1.5MB
SHA256 37c0e23bd9983fd2c1ab0fea8aaccc187462c2fb51265eb185f5c57535fb140a
MD5 bc69fba9183b0bd0792fcd390fa8bc7c
SHA1 f65054321f4affc96e2ddec70aa9e00325856cf9
SHA512 793141261daa31cd971c07fccbc372a11a57c89e701dbf27f4b7687bf61c22c30102fc5db36049a60a8e16a421944526b9cbb1e54418e524d5363dba1cd1a776
SSDEEP 24576:dE6E6EqDztAw4m/GAiVsqo0WDlaO+SGdplJPtOKn0P2BGUxvo:3L5GAhP3rIXhg
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe
Size 1.5MB
SHA256 37c0e23bd9983fd2c1ab0fea8aaccc187462c2fb51265eb185f5c57535fb140a
MD5 bc69fba9183b0bd0792fcd390fa8bc7c
SHA1 f65054321f4affc96e2ddec70aa9e00325856cf9
SHA512 793141261daa31cd971c07fccbc372a11a57c89e701dbf27f4b7687bf61c22c30102fc5db36049a60a8e16a421944526b9cbb1e54418e524d5363dba1cd1a776
SSDEEP 24576:dE6E6EqDztAw4m/GAiVsqo0WDlaO+SGdplJPtOKn0P2BGUxvo:3L5GAhP3rIXhg
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-DL6UB.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-DL6UB.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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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-N53OP.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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9jG4Uen63APn3I.exe

Path C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\9jG4Uen63APn3I.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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9jG4Uen63APn3I.exe

Path C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\9jG4Uen63APn3I.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/3696-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3696-143-0x0000000000400000-0x0000000001374000-memory.dmp

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memory/3696-142-0x0000000000400000-0x0000000001374000-memory.dmp

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memory/3696-147-0x0000000000400000-0x0000000001374000-memory.dmp

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memory/3696-153-0x0000000000400000-0x0000000001374000-memory.dmp

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memory/4572-132-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4572-138-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4572-154-0x0000000000400000-0x0000000000428000-memory.dmp

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