gcleaner | e1157b7e2119d799ea50f6e2a630e3c8df80251156a474343feef2fe3ae65f8d

Analysis

max time kernel
129s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
17/01/2023, 04:48

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General

Target
file.exe
Size 1.7MB
Sample230117-fe484see2t
SHA256 e1157b7e2119d799ea50f6e2a630e3c8df80251156a474343feef2fe3ae65f8d
MD5 0688e4e4cea33bc8164d73c6924807a9
SHA1 3919f5db834d1d4095b066edd7433dc604dd4d21
SHA512 f8469968ed4840560da50ff3ee469df58478a49a09faa05cc1535c98602c299b10d614550780fa944a08de44cde4621b9e265fc363a5c3811847cf29968bfd36
SSDEEP 49152:mjec8HoE7taAiX/v5FitS2ZozYinQNAn1GTj:pHoE7s95soz9QNAn1GTj
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
552	file.tmp
4944	finalrecovery.exe
1324	MtbN8SiyRJhi.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
552	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)\EetsoftFR\FinalRecovery\is-UCSEK.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\EetsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\EetsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\EetsoftFR\FinalRecovery\is-J7OAB.tmp	file.tmp
File created	C:\Program Files (x86)\EetsoftFR\FinalRecovery\is-8R7RR.tmp	file.tmp
File created	C:\Program Files (x86)\EetsoftFR\FinalRecovery\is-IUQSJ.tmp	file.tmp
File created	C:\Program Files (x86)\EetsoftFR\FinalRecovery\is-8LOG1.tmp	file.tmp
File created	C:\Program Files (x86)\EetsoftFR\FinalRecovery\data\is-0UHR9.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\EetsoftFR\FinalRecovery\unins000.dat	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
2340	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4944	finalrecovery.exe
4944	finalrecovery.exe
4944	finalrecovery.exe
4944	finalrecovery.exe
4944	finalrecovery.exe
4944	finalrecovery.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4944	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2340	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1748 wrote to memory of 552	1748	file.exe	82
PID 1748 wrote to memory of 552	1748	file.exe	82
PID 1748 wrote to memory of 552	1748	file.exe	82
PID 552 wrote to memory of 4944	552	file.tmp	83
PID 552 wrote to memory of 4944	552	file.tmp	83
PID 552 wrote to memory of 4944	552	file.tmp	83
PID 4944 wrote to memory of 1324	4944	finalrecovery.exe	84
PID 4944 wrote to memory of 1324	4944	finalrecovery.exe	84
PID 4944 wrote to memory of 1324	4944	finalrecovery.exe	84
PID 4944 wrote to memory of 528	4944	finalrecovery.exe	92
PID 4944 wrote to memory of 528	4944	finalrecovery.exe	92
PID 4944 wrote to memory of 528	4944	finalrecovery.exe	92
PID 528 wrote to memory of 2340	528	cmd.exe	94
PID 528 wrote to memory of 2340	528	cmd.exe	94
PID 528 wrote to memory of 2340	528	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:1748
- C:\Users\Admin\AppData\Local\Temp\is-R45FS.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-R45FS.tmp\file.tmp" /SL5="$80062,1554275,54272,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:552
- - C:\Program Files (x86)\EetsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\EetsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of WriteProcessMemory
    PID:4944
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\MtbN8SiyRJhi.exe
      4⤵
      Executes dropped EXE
      PID:1324
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\EetsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:528
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2340

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)\EetsoftFR\FinalRecovery\finalrecovery.exe
Size 1.6MB
SHA256 023f54bcbd65faa8e687001f900717294868cb68a5387d3a06e4de2311fdc1f0
MD5 58da2a1be6a8bacf84e2ed6aaf817430
SHA1 ab8a101a8ca26ffa86f227304dce191165616d3c
SHA512 a13448fc1fced24f96175dd97877ab70581270f26a36201b129224c154b17d08a7dfe49e6fb02b09a0a22ee41557ed3fef609986043189ef94da70db92bceea5
SSDEEP 24576:+oTpS25PSOMv28d8kJt6EK2tF7VfZf5YGVAeu9MjjQ7Ri+A37BDw:11mTRfOW310
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\EetsoftFR\FinalRecovery\finalrecovery.exe
Size 1.6MB
SHA256 023f54bcbd65faa8e687001f900717294868cb68a5387d3a06e4de2311fdc1f0
MD5 58da2a1be6a8bacf84e2ed6aaf817430
SHA1 ab8a101a8ca26ffa86f227304dce191165616d3c
SHA512 a13448fc1fced24f96175dd97877ab70581270f26a36201b129224c154b17d08a7dfe49e6fb02b09a0a22ee41557ed3fef609986043189ef94da70db92bceea5
SSDEEP 24576:+oTpS25PSOMv28d8kJt6EK2tF7VfZf5YGVAeu9MjjQ7Ri+A37BDw:11mTRfOW310
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-3JU23.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-R45FS.tmp\file.tmp
Size 696KB
SHA256 b1aa9fab8bd7c68246c60587cda7709166be3c1af95e17eeda73722ad08c0e8d
MD5 e3dcae5ee7ee62e603d2a37128861468
SHA1 c68f71703f544ec31d1670c09a597c06c827fb46
SHA512 f21cd0348762fd711c8de4cf56c98f7d9517856ed1f4f00f9ce62740bd26ee64943f5752132b459476dfa05a777fa2f5f5a5bd4dbfff0456a13b059642fe4d1c
SSDEEP 12288:WQtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kaA:ZtCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-R45FS.tmp\file.tmp
Size 696KB
SHA256 b1aa9fab8bd7c68246c60587cda7709166be3c1af95e17eeda73722ad08c0e8d
MD5 e3dcae5ee7ee62e603d2a37128861468
SHA1 c68f71703f544ec31d1670c09a597c06c827fb46
SHA512 f21cd0348762fd711c8de4cf56c98f7d9517856ed1f4f00f9ce62740bd26ee64943f5752132b459476dfa05a777fa2f5f5a5bd4dbfff0456a13b059642fe4d1c
SSDEEP 12288:WQtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kaA:ZtCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

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MtbN8SiyRJhi.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\MtbN8SiyRJhi.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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MtbN8SiyRJhi.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\MtbN8SiyRJhi.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/1748-138-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1748-156-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1748-132-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4944-143-0x0000000000400000-0x00000000013A5000-memory.dmp

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memory/4944-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4944-152-0x0000000000400000-0x00000000013A5000-memory.dmp

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memory/4944-144-0x0000000000400000-0x00000000013A5000-memory.dmp

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memory/4944-142-0x0000000000400000-0x00000000013A5000-memory.dmp

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memory/4944-155-0x0000000000400000-0x00000000013A5000-memory.dmp

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