gcleaner | 2e7af0cf5bfd23215766d5773158e46acb6f0ea918e2ae4fd84a1c60cc94641c

Analysis

max time kernel
62s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2023, 03:46

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General

Target
file.exe
Size 2.0MB
Sample230203-ebmdfsdh2z
SHA256 2e7af0cf5bfd23215766d5773158e46acb6f0ea918e2ae4fd84a1c60cc94641c
MD5 9da0f8e2bff6bb84ef052997e566e596
SHA1 d88036cd161e64d466bec1c84a872464a3f2bf1a
SHA512 f93c49eafc0588caf238490b90440042c6567199492890f48a24071c1b70baaf48a7db79feb93457ff043d9c57f80ecf1926bb903b55e66880fbf4be17c56ca3
SSDEEP 49152:sKuKmyxwF7AXB317tC4DUzPcmCv+mRFEoeyAjz+hLCgv2MR:bu9yUMXB317kDcmCv+mEoRRv2MR
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

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Executes dropped EXE 3 IoCs

pid	Process
3836	file.tmp
5088	finalrecovery.exe
4752	hOIfqIFyaeTu.exe

Loads dropped DLL 1 IoCs

pid	Process
3836	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)\FHIsoftFR\FinalRecovery\is-88CBK.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-P0OPI.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-NRH33.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-V5N5G.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-43O0C.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\data\is-MUUTV.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
4044	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5088	finalrecovery.exe
5088	finalrecovery.exe
5088	finalrecovery.exe
5088	finalrecovery.exe
5088	finalrecovery.exe
5088	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4044	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5104 wrote to memory of 3836	5104	file.exe	81
PID 5104 wrote to memory of 3836	5104	file.exe	81
PID 5104 wrote to memory of 3836	5104	file.exe	81
PID 3836 wrote to memory of 5088	3836	file.tmp	82
PID 3836 wrote to memory of 5088	3836	file.tmp	82
PID 3836 wrote to memory of 5088	3836	file.tmp	82
PID 5088 wrote to memory of 4752	5088	finalrecovery.exe	83
PID 5088 wrote to memory of 4752	5088	finalrecovery.exe	83
PID 5088 wrote to memory of 4752	5088	finalrecovery.exe	83
PID 5088 wrote to memory of 4056	5088	finalrecovery.exe	89
PID 5088 wrote to memory of 4056	5088	finalrecovery.exe	89
PID 5088 wrote to memory of 4056	5088	finalrecovery.exe	89
PID 4056 wrote to memory of 4044	4056	cmd.exe	91
PID 4056 wrote to memory of 4044	4056	cmd.exe	91
PID 4056 wrote to memory of 4044	4056	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:5104
- C:\Users\Admin\AppData\Local\Temp\is-D89A3.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-D89A3.tmp\file.tmp" /SL5="$90028,1813997,71680,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:3836
- - C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:5088
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\hOIfqIFyaeTu.exe
      4⤵
      Executes dropped EXE
      PID:4752
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4056
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4044

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)\FHIsoftFR\FinalRecovery\finalrecovery.exe
Size 1.9MB
SHA256 c0e3d66e50602ca90c4ed6b6071086b6ca9c172956a330ab4b942fe936441612
MD5 10be8d4d104ba458b65309832641c5be
SHA1 07ce8fd509606344f6f73f510f25ea204c055b25
SHA512 3f5b446583647c95480849559ebd6702784d9102c3b0196ac52915e737f459b63d6d0d97ec213f79d114bd84aa7da7ee17e54ab8708628fa16ca8bda360590db
SSDEEP 24576:ZrT2zQihpZTrXexWsPZQOayBJDBxgDZ+GO+xSFYPrLPWh0Bb8:ZrTIQihpZTaWsRjPBK8GJ6Yjo02
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe
Size 1.9MB
SHA256 c0e3d66e50602ca90c4ed6b6071086b6ca9c172956a330ab4b942fe936441612
MD5 10be8d4d104ba458b65309832641c5be
SHA1 07ce8fd509606344f6f73f510f25ea204c055b25
SHA512 3f5b446583647c95480849559ebd6702784d9102c3b0196ac52915e737f459b63d6d0d97ec213f79d114bd84aa7da7ee17e54ab8708628fa16ca8bda360590db
SSDEEP 24576:ZrT2zQihpZTrXexWsPZQOayBJDBxgDZ+GO+xSFYPrLPWh0Bb8:ZrTIQihpZTaWsRjPBK8GJ6Yjo02
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-D89A3.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-D89A3.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-LO1S9.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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hOIfqIFyaeTu.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\hOIfqIFyaeTu.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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hOIfqIFyaeTu.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\hOIfqIFyaeTu.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/5088-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/5088-144-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/5088-143-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/5088-142-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/5088-151-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/5088-154-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/5104-132-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/5104-138-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/5104-155-0x0000000000400000-0x0000000000418000-memory.dmp

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