gcleaner | c6e13f9877177ff3e366deff5f21ea005729e5dd0bbb3f825d55da9d1ea1032a

Analysis

max time kernel
90s
max time network
149s
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, 11:16

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General

Target
file.exe
Size 1.8MB
Sample230126-nc6cdsdd75
SHA256 c6e13f9877177ff3e366deff5f21ea005729e5dd0bbb3f825d55da9d1ea1032a
MD5 519f12a6c562bda0de15bfdd92291c61
SHA1 eedbb882523f6b42c6b56af8f902242dd689c9b6
SHA512 f01e401c0bebdad5a11b5e789000dc380605d123becd0db6f6f6ec6392bc58f24a13203c4740e4598fc6189cd9ecc884e58df088b2c094c489e80937581260b9
SSDEEP 49152:okug+2nE8KxZC/DSYmvadO5ZNY++9PxgyLCgv2MR:hug+MeTOGYmSY5ZNY+ePaav2MR
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
3956	file.tmp
3960	finalrecovery.exe
456	pDJrHbnTwVZNzk.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
3956	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\data\is-3NOD6.tmp	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-EEM4L.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-R86IM.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-JECF6.tmp	file.tmp
File created	C:\Program Files (x86)\FgbsoftFR\FinalRecovery\is-JCKCQ.tmp	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-NA3UT.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
4528	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3960	finalrecovery.exe
3960	finalrecovery.exe
3960	finalrecovery.exe
3960	finalrecovery.exe
3960	finalrecovery.exe
3960	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4528	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3912 wrote to memory of 3956	3912	file.exe	81
PID 3912 wrote to memory of 3956	3912	file.exe	81
PID 3912 wrote to memory of 3956	3912	file.exe	81
PID 3956 wrote to memory of 3960	3956	file.tmp	82
PID 3956 wrote to memory of 3960	3956	file.tmp	82
PID 3956 wrote to memory of 3960	3956	file.tmp	82
PID 3960 wrote to memory of 456	3960	finalrecovery.exe	83
PID 3960 wrote to memory of 456	3960	finalrecovery.exe	83
PID 3960 wrote to memory of 456	3960	finalrecovery.exe	83
PID 3960 wrote to memory of 4720	3960	finalrecovery.exe	92
PID 3960 wrote to memory of 4720	3960	finalrecovery.exe	92
PID 3960 wrote to memory of 4720	3960	finalrecovery.exe	92
PID 4720 wrote to memory of 4528	4720	cmd.exe	94
PID 4720 wrote to memory of 4528	4720	cmd.exe	94
PID 4720 wrote to memory of 4528	4720	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:3912
- C:\Users\Admin\AppData\Local\Temp\is-HA2JI.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-HA2JI.tmp\file.tmp" /SL5="$60090,1605124,135168,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:3956
- - 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:3960
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\pDJrHbnTwVZNzk.exe
      4⤵
      Executes dropped EXE
      PID:456
  - - 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:4720
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4528

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 8c53e8e15a3a190e84b51b9c5295777ae768571a178022f7d2c6745e848f1cce
MD5 ebbe15fc32504caa7c7669820b8ba349
SHA1 8e38cd7ade414a9d720d7ab1d90e07fccc98e06f
SHA512 42bb2588039a060f17b0f5d86aa65e63513258f5f0f6570333d18f8712fb01ebb0f35c60f7dbc632e7ae145b7f931f56a34025b9aac70b34c4fa6019547eb13e
SSDEEP 24576:qpVMY9H1XAvZrz4Xb7m/GAi3rnfGq0usAukBX:ADAGA0nfGT1E
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FgbsoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 8c53e8e15a3a190e84b51b9c5295777ae768571a178022f7d2c6745e848f1cce
MD5 ebbe15fc32504caa7c7669820b8ba349
SHA1 8e38cd7ade414a9d720d7ab1d90e07fccc98e06f
SHA512 42bb2588039a060f17b0f5d86aa65e63513258f5f0f6570333d18f8712fb01ebb0f35c60f7dbc632e7ae145b7f931f56a34025b9aac70b34c4fa6019547eb13e
SSDEEP 24576:qpVMY9H1XAvZrz4Xb7m/GAi3rnfGq0usAukBX:ADAGA0nfGT1E
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-HA2JI.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-HA2JI.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-PU3DP.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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pDJrHbnTwVZNzk.exe

Path C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\pDJrHbnTwVZNzk.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

pDJrHbnTwVZNzk.exe

Path C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\pDJrHbnTwVZNzk.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/3912-156-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/3912-151-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/3912-132-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/3912-134-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/3960-143-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/3960-144-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/3960-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3960-142-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/3960-152-0x0000000000400000-0x0000000001348000-memory.dmp

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memory/3960-155-0x0000000000400000-0x0000000001348000-memory.dmp

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