gcleaner | 98ced69d991c31a19fc95745348208edae7743e9efffd80de9e2e7386e42a5ee

Analysis

max time kernel
91s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2023, 10:48

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General

Target
file.exe
Size 1.7MB
Sample230124-mv4e3sae93
SHA256 98ced69d991c31a19fc95745348208edae7743e9efffd80de9e2e7386e42a5ee
MD5 ebeeef55f0de7924edf711c319b7ff3b
SHA1 2c0400f5055ec21417beb109612e43c08857bf1e
SHA512 3c61a0c3d6cabfe73ecaae32964a7a3eb474793d4040349989ec84cab8e29dedaf740f8293c260a54a7d7248e194884c5f8548826fb2a879076ef5ecb7b862f5
SSDEEP 49152:ZgleGkFFKeJIWr4UsaExKYGUiiv1OBb1iLCgv2MR:P5FbJI1KYGDHov2MR
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
5028	file.tmp
4240	finalrecovery.exe
1368	HvUhhvII7pc.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
5028	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)\FezsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-UGQGQ.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\data\is-QHJ8B.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FezsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-2GA8E.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-133OT.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-OE1EF.tmp	file.tmp
File created	C:\Program Files (x86)\FezsoftFR\FinalRecovery\is-QGKAJ.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FezsoftFR\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
3660	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4240	finalrecovery.exe
4240	finalrecovery.exe
4240	finalrecovery.exe
4240	finalrecovery.exe
4240	finalrecovery.exe
4240	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3660	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4888 wrote to memory of 5028	4888	file.exe	80
PID 4888 wrote to memory of 5028	4888	file.exe	80
PID 4888 wrote to memory of 5028	4888	file.exe	80
PID 5028 wrote to memory of 4240	5028	file.tmp	81
PID 5028 wrote to memory of 4240	5028	file.tmp	81
PID 5028 wrote to memory of 4240	5028	file.tmp	81
PID 4240 wrote to memory of 1368	4240	finalrecovery.exe	82
PID 4240 wrote to memory of 1368	4240	finalrecovery.exe	82
PID 4240 wrote to memory of 1368	4240	finalrecovery.exe	82
PID 4240 wrote to memory of 3140	4240	finalrecovery.exe	90
PID 4240 wrote to memory of 3140	4240	finalrecovery.exe	90
PID 4240 wrote to memory of 3140	4240	finalrecovery.exe	90
PID 3140 wrote to memory of 3660	3140	cmd.exe	92
PID 3140 wrote to memory of 3660	3140	cmd.exe	92
PID 3140 wrote to memory of 3660	3140	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4888
- C:\Users\Admin\AppData\Local\Temp\is-SI41B.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-SI41B.tmp\file.tmp" /SL5="$A0052,1580504,54272,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:5028
- - C:\Program Files (x86)\FezsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FezsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4240
  - - C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\HvUhhvII7pc.exe
      4⤵
      Executes dropped EXE
      PID:1368
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FezsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3140
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3660

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)\FezsoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 7bfb186f0da50895124b38cff45084bc94051ea248722c9305ae0fe7627e3504
MD5 9bd0b1ddfa734fdba5087b6eb84693b4
SHA1 5a4346b85461d560d6e0069ca2ac2555eb844cbe
SHA512 7c3e23a24458a0b2169aa9bfc0bfcf10dc39291795a1db22a639a55bc585a0a9878fbaef72ebb8bfb603fec314b8ac31a129fc554522373c28bf3c62bde9ec34
SSDEEP 24576:Hs+DZXZxpyVJQ+yllCm/GAiDeuX6Ii14c6NbLNsw+Ue8m:pL5+yGAWX64Fxbeh
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FezsoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 7bfb186f0da50895124b38cff45084bc94051ea248722c9305ae0fe7627e3504
MD5 9bd0b1ddfa734fdba5087b6eb84693b4
SHA1 5a4346b85461d560d6e0069ca2ac2555eb844cbe
SHA512 7c3e23a24458a0b2169aa9bfc0bfcf10dc39291795a1db22a639a55bc585a0a9878fbaef72ebb8bfb603fec314b8ac31a129fc554522373c28bf3c62bde9ec34
SSDEEP 24576:Hs+DZXZxpyVJQ+yllCm/GAiDeuX6Ii14c6NbLNsw+Ue8m:pL5+yGAWX64Fxbeh
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-51SJH.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-SI41B.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-SI41B.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

Submit Download

HvUhhvII7pc.exe

Path C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\HvUhhvII7pc.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

HvUhhvII7pc.exe

Path C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\HvUhhvII7pc.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/4240-143-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/4240-144-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/4240-142-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/4240-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4240-152-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/4240-155-0x0000000000400000-0x0000000001343000-memory.dmp

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memory/4888-132-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4888-151-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4888-134-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4888-156-0x0000000000400000-0x0000000000414000-memory.dmp

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