gcleaner | 4e13b03006387e80e39e4a8e13a0939250c34c8cfc9ccd4c44ccfa52545374bf

Analysis

max time kernel
117s
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
23/01/2023, 17:48

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General

Target
file.exe
Size 1.9MB
Sample230123-wdfgcsed86
SHA256 4e13b03006387e80e39e4a8e13a0939250c34c8cfc9ccd4c44ccfa52545374bf
MD5 864f311df6ec486e0a76f92d17970c83
SHA1 cc5d07e3f2b28b1c290c9d6d9ccedf092a833ea4
SHA512 68e2aeac56495df737fa7440fde8bf21588477567371e3cae359ec84728bc268e5e6fb0421923918ea46c241365b012647266e928d9aceaeb20912ce11800d5b
SSDEEP 49152:OXoOA2b/hrjSbQbtQKD+pHzcLbUw2CIN61V:EA2bJ7buKDeAEBVN61V
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
4512	file.tmp
968	finalrecovery.exe
2816	8Aaev20Ua.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
4512	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-13HHA.tmp	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-FD1O3.tmp	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-I9E2V.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FeysoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-EILBF.tmp	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-U8TMP.tmp	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\data\is-U8URC.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
996	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
968	finalrecovery.exe
968	finalrecovery.exe
968	finalrecovery.exe
968	finalrecovery.exe
968	finalrecovery.exe
968	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	996	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 4512	2600	file.exe	81
PID 2600 wrote to memory of 4512	2600	file.exe	81
PID 2600 wrote to memory of 4512	2600	file.exe	81
PID 4512 wrote to memory of 968	4512	file.tmp	82
PID 4512 wrote to memory of 968	4512	file.tmp	82
PID 4512 wrote to memory of 968	4512	file.tmp	82
PID 968 wrote to memory of 2816	968	finalrecovery.exe	85
PID 968 wrote to memory of 2816	968	finalrecovery.exe	85
PID 968 wrote to memory of 2816	968	finalrecovery.exe	85
PID 968 wrote to memory of 2168	968	finalrecovery.exe	91
PID 968 wrote to memory of 2168	968	finalrecovery.exe	91
PID 968 wrote to memory of 2168	968	finalrecovery.exe	91
PID 2168 wrote to memory of 996	2168	cmd.exe	93
PID 2168 wrote to memory of 996	2168	cmd.exe	93
PID 2168 wrote to memory of 996	2168	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Users\Admin\AppData\Local\Temp\is-69F2C.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-69F2C.tmp\file.tmp" /SL5="$A01D6,1737660,67072,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:4512
- - 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:968
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\8Aaev20Ua.exe
      4⤵
      Executes dropped EXE
      PID:2816
  - - 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:2168
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:996

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 1.5MB
SHA256 7673d7c82e06cfe00bddd3b9986e388e44ede328ad2415e81d62a3aa1fd3110e
MD5 1a15f32b4ec15b1f42bea7b92c0bb921
SHA1 bb8a986311a7ff5d55362ab55afe86fe69e6bced
SHA512 b0e9490dea06df22eaa5ae9180e1903d4069aa8c4b7ebcb7b4ea0fc94f8131f74b52012fc60f489e375705a5d17d5eb1878c0d0339d4e25c62bece9be9a30b1a
SSDEEP 24576:i+WzrP8/XT2mt7TRjXm/GBiu6YLi1WfUcV6HmZgeELrh+yGrMhnF83ydoXy2W7Ql:nK2RkGBkhdAgeA+F3yJ/ot
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe
Size 1.5MB
SHA256 7673d7c82e06cfe00bddd3b9986e388e44ede328ad2415e81d62a3aa1fd3110e
MD5 1a15f32b4ec15b1f42bea7b92c0bb921
SHA1 bb8a986311a7ff5d55362ab55afe86fe69e6bced
SHA512 b0e9490dea06df22eaa5ae9180e1903d4069aa8c4b7ebcb7b4ea0fc94f8131f74b52012fc60f489e375705a5d17d5eb1878c0d0339d4e25c62bece9be9a30b1a
SSDEEP 24576:i+WzrP8/XT2mt7TRjXm/GBiu6YLi1WfUcV6HmZgeELrh+yGrMhnF83ydoXy2W7Ql:nK2RkGBkhdAgeA+F3yJ/ot
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-69F2C.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-69F2C.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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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-U9H8J.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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8Aaev20Ua.exe

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\8Aaev20Ua.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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8Aaev20Ua.exe

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\8Aaev20Ua.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/968-143-0x0000000000400000-0x000000000138A000-memory.dmp

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memory/968-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/968-142-0x0000000000400000-0x000000000138A000-memory.dmp

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memory/968-154-0x0000000000400000-0x000000000138A000-memory.dmp

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memory/968-151-0x0000000000400000-0x000000000138A000-memory.dmp

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memory/2600-150-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2600-134-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2600-132-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2600-155-0x0000000000400000-0x0000000000417000-memory.dmp

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