gcleaner | c82a8034bd555a0627cab4f36ba5fa5aa631cbe96898cfe180d8d0e252287dd2

Analysis

max time kernel
79s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2023, 04:16

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General

Target
file.exe
Size 2.0MB
Sample230127-evspksgd69
SHA256 c82a8034bd555a0627cab4f36ba5fa5aa631cbe96898cfe180d8d0e252287dd2
MD5 24e1933cd34a78edaef0790b45c800e1
SHA1 8f47daaf1a1cd80e9346265d95f0d7447ca054e7
SHA512 d13ddc7c1adf4591509935ee65fda59df0d35078b60746bd60aa927cdb9eac1d1c04d88786a4148c6ddda06b273a16e526f2c41ccfad6c176d0cd4f3d73037f0
SSDEEP 49152:okug+Vkorx+TkJB+HTU4/RaXSn2GBT+i+t9SPgZn3DCLCgv2MR:hug+XUYB+HTBfTBot9SYZnzqv2MR
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
3408	file.tmp
3328	finalrecovery.exe
4428	EXWiaXOP.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
3408	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)\FgcsoftFR\FinalRecovery\is-P01G3.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-TGNO3.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-3ULG7.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-9OPAP.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-2BJM4.tmp	file.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\data\is-T0PJN.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
5100	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3328	finalrecovery.exe
3328	finalrecovery.exe
3328	finalrecovery.exe
3328	finalrecovery.exe
3328	finalrecovery.exe
3328	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5100	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2564 wrote to memory of 3408	2564	file.exe	78
PID 2564 wrote to memory of 3408	2564	file.exe	78
PID 2564 wrote to memory of 3408	2564	file.exe	78
PID 3408 wrote to memory of 3328	3408	file.tmp	79
PID 3408 wrote to memory of 3328	3408	file.tmp	79
PID 3408 wrote to memory of 3328	3408	file.tmp	79
PID 3328 wrote to memory of 4428	3328	finalrecovery.exe	80
PID 3328 wrote to memory of 4428	3328	finalrecovery.exe	80
PID 3328 wrote to memory of 4428	3328	finalrecovery.exe	80
PID 3328 wrote to memory of 4252	3328	finalrecovery.exe	88
PID 3328 wrote to memory of 4252	3328	finalrecovery.exe	88
PID 3328 wrote to memory of 4252	3328	finalrecovery.exe	88
PID 4252 wrote to memory of 5100	4252	cmd.exe	90
PID 4252 wrote to memory of 5100	4252	cmd.exe	90
PID 4252 wrote to memory of 5100	4252	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2564
- C:\Users\Admin\AppData\Local\Temp\is-5H8MB.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-5H8MB.tmp\file.tmp" /SL5="$D0066,1882297,135168,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:3408
- - 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 use of WriteProcessMemory
    PID:3328
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\EXWiaXOP.exe
      4⤵
      Executes dropped EXE
      PID:4428
  - - 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:4252
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:5100

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 0f2455c6423ea1bfd2964979eb45d631eb0697f0f404806d6e3c64f5034776d4
MD5 0b779205cf06e670d1aa56d6ab5217f3
SHA1 cfa579fc8a81f530aa7e216f0d5e9bc8abafa712
SHA512 2ac8f29294a4f438f20a787c5c932146ef6814ec78d94a8ca923a1eb9a007292f724b2be341f160e43812a0eb417f24c9a87fbe8a985d14d049a808533730264
SSDEEP 24576:RaprpSwzNFRV48um/GAiVsqoLtvC57bOJn0UYSBgQm2sos1KG9z9GKRRp5Gg3p:MNPGAhP8YX/mn4rKLp5G
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe
Size 1.6MB
SHA256 0f2455c6423ea1bfd2964979eb45d631eb0697f0f404806d6e3c64f5034776d4
MD5 0b779205cf06e670d1aa56d6ab5217f3
SHA1 cfa579fc8a81f530aa7e216f0d5e9bc8abafa712
SHA512 2ac8f29294a4f438f20a787c5c932146ef6814ec78d94a8ca923a1eb9a007292f724b2be341f160e43812a0eb417f24c9a87fbe8a985d14d049a808533730264
SSDEEP 24576:RaprpSwzNFRV48um/GAiVsqoLtvC57bOJn0UYSBgQm2sos1KG9z9GKRRp5Gg3p:MNPGAhP8YX/mn4rKLp5G
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-5H8MB.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-5H8MB.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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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-E59GI.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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EXWiaXOP.exe

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

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\EXWiaXOP.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/2564-156-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/2564-137-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/2564-151-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/2564-132-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/3328-142-0x0000000000400000-0x00000000013A3000-memory.dmp

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memory/3328-144-0x0000000000400000-0x00000000013A3000-memory.dmp

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memory/3328-143-0x0000000000400000-0x00000000013A3000-memory.dmp

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memory/3328-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3328-152-0x0000000000400000-0x00000000013A3000-memory.dmp

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memory/3328-155-0x0000000000400000-0x00000000013A3000-memory.dmp

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