gcleaner | c893e2080d08206adf8728ed7027439d7a95dad3e6ae013da86a112adf9cb9ea

Analysis

max time kernel
77s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2023, 09:47

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General

Target
file.exe
Size 1.7MB
Sample230123-lr7snaed71
SHA256 c893e2080d08206adf8728ed7027439d7a95dad3e6ae013da86a112adf9cb9ea
MD5 33f3cfd1cb8e00f736ad94c81b1f79e4
SHA1 d9aa1e22dc33f3cd4900820cb9375df18f324f74
SHA512 a5ff12f49d6b28ec487160db566da92fa05adf3b5c593188ebb9896bc14e6218e59ab7c429809a08427e04bcb2e567fb52bb21775b0362671fd0f1fe6523029a
SSDEEP 49152:O4sTZeyIUU381R0TfAEaE+McMXECknw2CIN61V:ozRWO0TfdaEAhCIBVN61V
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
2072	file.tmp
4824	finalrecovery.exe
4732	JzHvbb6xRn3o.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
2072	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)\FeysoftFR\FinalRecovery\is-HJF08.tmp	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\data\is-IPK34.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FeysoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-0A7SD.tmp	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-0N16N.tmp	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-J6P3G.tmp	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-97VD8.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
4024	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4824	finalrecovery.exe
4824	finalrecovery.exe
4824	finalrecovery.exe
4824	finalrecovery.exe
4824	finalrecovery.exe
4824	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4024	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2072	2248	file.exe	82
PID 2248 wrote to memory of 2072	2248	file.exe	82
PID 2248 wrote to memory of 2072	2248	file.exe	82
PID 2072 wrote to memory of 4824	2072	file.tmp	83
PID 2072 wrote to memory of 4824	2072	file.tmp	83
PID 2072 wrote to memory of 4824	2072	file.tmp	83
PID 4824 wrote to memory of 4732	4824	finalrecovery.exe	84
PID 4824 wrote to memory of 4732	4824	finalrecovery.exe	84
PID 4824 wrote to memory of 4732	4824	finalrecovery.exe	84
PID 4824 wrote to memory of 2816	4824	finalrecovery.exe	86
PID 4824 wrote to memory of 2816	4824	finalrecovery.exe	86
PID 4824 wrote to memory of 2816	4824	finalrecovery.exe	86
PID 2816 wrote to memory of 4024	2816	cmd.exe	88
PID 2816 wrote to memory of 4024	2816	cmd.exe	88
PID 2816 wrote to memory of 4024	2816	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Users\Admin\AppData\Local\Temp\is-T7KQN.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-T7KQN.tmp\file.tmp" /SL5="$601F8,1574009,67072,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:2072
- - C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4824
  - - C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\JzHvbb6xRn3o.exe
      4⤵
      Executes dropped EXE
      PID:4732
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2816
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4024

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)\FeysoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 83f715d0afa37745d72896b83d7cd2b996c1a2a1acbcd1c41ee0f71b9898382b
MD5 7d5aa0e0a060d21a74fc7f825f09caf5
SHA1 68ab85dbb397ba0b0d982bf3af2278e827980640
SHA512 749ece36e58d20a64360b3bca1f9c65bdc01b0902e3c8628ee819c601ef88f49811316eec5be72021210b8f87d5c517568623f0a8f68f2d1b7421e24ee88e342
SSDEEP 24576:tMO4YHKYQakuckoNiwm/GBigmJhgxqnht046A9+6kDDTeHeM:u7+x/WkU6GB7eF4bDyHeM
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 83f715d0afa37745d72896b83d7cd2b996c1a2a1acbcd1c41ee0f71b9898382b
MD5 7d5aa0e0a060d21a74fc7f825f09caf5
SHA1 68ab85dbb397ba0b0d982bf3af2278e827980640
SHA512 749ece36e58d20a64360b3bca1f9c65bdc01b0902e3c8628ee819c601ef88f49811316eec5be72021210b8f87d5c517568623f0a8f68f2d1b7421e24ee88e342
SSDEEP 24576:tMO4YHKYQakuckoNiwm/GBigmJhgxqnht046A9+6kDDTeHeM:u7+x/WkU6GB7eF4bDyHeM
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-541SO.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-T7KQN.tmp\file.tmp
Size 708KB
SHA256 ab1f6283dd98be3eab521c42dd3e17bca120b75a901400f65c44f5d5bb282872
MD5 f545e0d846d3711ac76fabbc452efead
SHA1 9a34cf19df7f92e54f1aa1d67f43ce03b58d52f0
SHA512 b4bc0f35aca769273b5a98029e05adc576a949d5e75533c5244d6da6d3c90941c58fb8c263a8da421faa850d701749a1db2ed53f16729b6d8f4828403378fc8f
SSDEEP 12288:5QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kqi:CtCUA4arPEn37TzH7A6nw9yzeESUFWHV
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-T7KQN.tmp\file.tmp
Size 708KB
SHA256 ab1f6283dd98be3eab521c42dd3e17bca120b75a901400f65c44f5d5bb282872
MD5 f545e0d846d3711ac76fabbc452efead
SHA1 9a34cf19df7f92e54f1aa1d67f43ce03b58d52f0
SHA512 b4bc0f35aca769273b5a98029e05adc576a949d5e75533c5244d6da6d3c90941c58fb8c263a8da421faa850d701749a1db2ed53f16729b6d8f4828403378fc8f
SSDEEP 12288:5QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kqi:CtCUA4arPEn37TzH7A6nw9yzeESUFWHV
MD5 SHA1 SHA512 SSDEEP

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JzHvbb6xRn3o.exe

Path C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\JzHvbb6xRn3o.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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JzHvbb6xRn3o.exe

Path C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\JzHvbb6xRn3o.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/2248-156-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2248-132-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2248-151-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2248-136-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4824-142-0x0000000000400000-0x0000000001358000-memory.dmp

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memory/4824-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4824-152-0x0000000000400000-0x0000000001358000-memory.dmp

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memory/4824-144-0x0000000000400000-0x0000000001358000-memory.dmp

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memory/4824-143-0x0000000000400000-0x0000000001358000-memory.dmp

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memory/4824-155-0x0000000000400000-0x0000000001358000-memory.dmp

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