gcleaner | a6d702f7939c5dd8d01052b614cabe72f53c2d9c4906df8ba97d5152dd2c5b3b

Analysis

max time kernel
97s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2023, 17:46

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General

Target
file.exe
Size 2.0MB
Sample230127-wcajqacd43
SHA256 a6d702f7939c5dd8d01052b614cabe72f53c2d9c4906df8ba97d5152dd2c5b3b
MD5 45a7cdfd5b7b1e6c00ffb2527342a72b
SHA1 a85564967c333dd867be10043901e073fc2ded64
SHA512 03d146139902e8bd649b54a5a140228538a8f54877b90f1bbe8c2485b5e81db6c6b0ffc742c5b77dd4a4027559a8f3e9ab095e8fbb5b6e64386e851f210b31ff
SSDEEP 49152:okug+gw8zqr+k3cynaq7u8AmEYwAkreb7u+ChMekcZojLCgv2MR:hug+gwT3paKtxu1KbC+bjMonv2MR
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
4416	file.tmp
860	finalrecovery.exe
4408	o5tOi4dBNkiDw.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
4416	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 opened for modification	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-UJ1QU.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-334NI.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-RO3BI.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-4GN90.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-TAGKQ.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\data\is-6G7EP.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe	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
4012	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
860	finalrecovery.exe
860	finalrecovery.exe
860	finalrecovery.exe
860	finalrecovery.exe
860	finalrecovery.exe
860	finalrecovery.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
860	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4012	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4300 wrote to memory of 4416	4300	file.exe	82
PID 4300 wrote to memory of 4416	4300	file.exe	82
PID 4300 wrote to memory of 4416	4300	file.exe	82
PID 4416 wrote to memory of 860	4416	file.tmp	83
PID 4416 wrote to memory of 860	4416	file.tmp	83
PID 4416 wrote to memory of 860	4416	file.tmp	83
PID 860 wrote to memory of 4408	860	finalrecovery.exe	84
PID 860 wrote to memory of 4408	860	finalrecovery.exe	84
PID 860 wrote to memory of 4408	860	finalrecovery.exe	84
PID 860 wrote to memory of 2168	860	finalrecovery.exe	92
PID 860 wrote to memory of 2168	860	finalrecovery.exe	92
PID 860 wrote to memory of 2168	860	finalrecovery.exe	92
PID 2168 wrote to memory of 4012	2168	cmd.exe	94
PID 2168 wrote to memory of 4012	2168	cmd.exe	94
PID 2168 wrote to memory of 4012	2168	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:4300
- C:\Users\Admin\AppData\Local\Temp\is-8NQKQ.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-8NQKQ.tmp\file.tmp" /SL5="$A01D6,1885722,135168,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:4416
- - C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of WriteProcessMemory
    PID:860
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\o5tOi4dBNkiDw.exe
      4⤵
      Executes dropped EXE
      PID:4408
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FgcsoftFR\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:4012

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)\FgcsoftFR\FinalRecovery\finalrecovery.exe
Size 1.6MB
SHA256 a8893750361ce92d70a62b53b9632b54aa6b44088a551a7ac8ec40c6acdd47ab
MD5 3252c9911a6bc8ee46df432c0e4d8584
SHA1 4f093242f3340f915a068728d17f7ac0a640e695
SHA512 07599f207e84d4127aa1daa470fbc1cda952f25382e76f8b5a55afaaa26b1446a44d3f3a8a8c526277679ad37afec5e4f804cac29b76fd7f44a72cf66abf66cf
SSDEEP 24576:rqpArGQB3GJfym/GAiVsqoja8ao4TrkITObxsfDonGSMoSbAuHFkX8:tDWGAhP0YMDMGLo2A+6X8
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe
Size 1.6MB
SHA256 a8893750361ce92d70a62b53b9632b54aa6b44088a551a7ac8ec40c6acdd47ab
MD5 3252c9911a6bc8ee46df432c0e4d8584
SHA1 4f093242f3340f915a068728d17f7ac0a640e695
SHA512 07599f207e84d4127aa1daa470fbc1cda952f25382e76f8b5a55afaaa26b1446a44d3f3a8a8c526277679ad37afec5e4f804cac29b76fd7f44a72cf66abf66cf
SSDEEP 24576:rqpArGQB3GJfym/GAiVsqoja8ao4TrkITObxsfDonGSMoSbAuHFkX8:tDWGAhP0YMDMGLo2A+6X8
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-0092S.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-8NQKQ.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-8NQKQ.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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o5tOi4dBNkiDw.exe

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\o5tOi4dBNkiDw.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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o5tOi4dBNkiDw.exe

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\o5tOi4dBNkiDw.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/860-143-0x0000000000400000-0x00000000013A6000-memory.dmp

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memory/860-148-0x0000000000400000-0x00000000013A6000-memory.dmp

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memory/860-142-0x0000000000400000-0x00000000013A6000-memory.dmp

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memory/860-154-0x0000000000400000-0x00000000013A6000-memory.dmp

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memory/860-149-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4300-147-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4300-137-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4300-132-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4300-155-0x0000000000400000-0x0000000000428000-memory.dmp

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