gcleaner | 2d3e7407accd901aa6afaa40364d3f784cd16dad5d48a1e296f1d31ad3214eb7

Analysis

max time kernel
69s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2023, 10:32

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General

Target
file.exe
Size 1.8MB
Sample230126-mkyrvadd26
SHA256 2d3e7407accd901aa6afaa40364d3f784cd16dad5d48a1e296f1d31ad3214eb7
MD5 91c1b804b92dd8bfbaef16e86f3d1e4a
SHA1 99e9be2d0b856c41391584c38311c77e3578efef
SHA512 616fa4b07f5c96f12fdce9e979142bedc41090e88960dea4ae18891786848e65a345d605438b1541f05591406cb9101fe06bbd6a194128c00c5c4143633b3698
SSDEEP 49152:okug+SJDh9424mQ1e0aDP7R+SjaNxfooKY00VLCgv2MR:hug+SNaNbaz5aNpYYdJv2MR
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
2988	file.tmp
4784	finalrecovery.exe
4936	zXyJk1YtHBdm7.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
2988	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\is-N1K8G.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-9SCV4.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\data\is-QEBEC.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File opened for modification	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-MO0I6.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-3779S.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-BUV4H.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
2864	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4784	finalrecovery.exe
4784	finalrecovery.exe
4784	finalrecovery.exe
4784	finalrecovery.exe
4784	finalrecovery.exe
4784	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2864	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 2988	5004	file.exe	82
PID 5004 wrote to memory of 2988	5004	file.exe	82
PID 5004 wrote to memory of 2988	5004	file.exe	82
PID 2988 wrote to memory of 4784	2988	file.tmp	83
PID 2988 wrote to memory of 4784	2988	file.tmp	83
PID 2988 wrote to memory of 4784	2988	file.tmp	83
PID 4784 wrote to memory of 4936	4784	finalrecovery.exe	84
PID 4784 wrote to memory of 4936	4784	finalrecovery.exe	84
PID 4784 wrote to memory of 4936	4784	finalrecovery.exe	84
PID 4784 wrote to memory of 4360	4784	finalrecovery.exe	92
PID 4784 wrote to memory of 4360	4784	finalrecovery.exe	92
PID 4784 wrote to memory of 4360	4784	finalrecovery.exe	92
PID 4360 wrote to memory of 2864	4360	cmd.exe	94
PID 4360 wrote to memory of 2864	4360	cmd.exe	94
PID 4360 wrote to memory of 2864	4360	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:5004
- C:\Users\Admin\AppData\Local\Temp\is-T9ORP.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-T9ORP.tmp\file.tmp" /SL5="$90064,1624257,135168,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:2988
- - 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:4784
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\zXyJk1YtHBdm7.exe
      4⤵
      Executes dropped EXE
      PID:4936
  - - 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:4360
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2864

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 04ff942e1f8a4b76b255761557c26547bc8562163827c16f6022283531fb26bb
MD5 751ff0b852c43e5cf9cf24b87928580a
SHA1 700c2de52d05696ff501fb910f0f3ba1dc82e367
SHA512 dac82319b009a3f0855760760a1550ddf73f245a1a08bee2eb06cf69bd60f2603b451ac80cad29c4ab3d4687f3055fd167c70f59c32b6bac070d1e330ef18992
SSDEEP 24576:ThszYvGTJRWm/GAiM4p4yaojs+HkFu8yUQ1vyN5:M5GAMpjjsxH5
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FgbsoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 04ff942e1f8a4b76b255761557c26547bc8562163827c16f6022283531fb26bb
MD5 751ff0b852c43e5cf9cf24b87928580a
SHA1 700c2de52d05696ff501fb910f0f3ba1dc82e367
SHA512 dac82319b009a3f0855760760a1550ddf73f245a1a08bee2eb06cf69bd60f2603b451ac80cad29c4ab3d4687f3055fd167c70f59c32b6bac070d1e330ef18992
SSDEEP 24576:ThszYvGTJRWm/GAiM4p4yaojs+HkFu8yUQ1vyN5:M5GAMpjjsxH5
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-6PLM7.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-T9ORP.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-T9ORP.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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zXyJk1YtHBdm7.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\zXyJk1YtHBdm7.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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zXyJk1YtHBdm7.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\zXyJk1YtHBdm7.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/4784-142-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/4784-144-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/4784-143-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/4784-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4784-152-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/4784-155-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/5004-132-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/5004-151-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/5004-134-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/5004-156-0x0000000000400000-0x0000000000428000-memory.dmp

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