gcleaner | 382ef403e766d59abb559ac7ccfabf429d792a051a5ed6465cc7d836dd8015de

General

Target

file.exe
Size

2.0MB
MD5

7bd65adb3d6eb6963c2e1eb53f47d888
SHA1

99fcb7bbb8d9c0dea8a4a6a3b1d783708dc12dae
SHA256

382ef403e766d59abb559ac7ccfabf429d792a051a5ed6465cc7d836dd8015de
SHA512

b31e71a6da1e16fa585a03eb76ed33bd71e748053ce829f0458f071936bd280f9590cd5bac6eeb48b5bbf4253c803b0e05529f8221539e40f06ec5b60d528b87
SSDEEP

49152:bgxON0THpvhhoQIFyAj3E5Rn4yExrCf1zmMxvBZwLCgv2MR:cB9vhOPFyAj0rE5Cl5v0v2MR

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

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
800	file.tmp
4928	finalrecovery.exe
3516	H9k8eSnJUXgJEs.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
800	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)\FHHsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-4M212.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-3OIU7.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-A81VP.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\data\is-1AMIS.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-VFP2A.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-2JC4O.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHHsoftFR\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
2180	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4928	finalrecovery.exe
4928	finalrecovery.exe
4928	finalrecovery.exe
4928	finalrecovery.exe
4928	finalrecovery.exe
4928	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2180	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4280 wrote to memory of 800	4280	file.exe	82
PID 4280 wrote to memory of 800	4280	file.exe	82
PID 4280 wrote to memory of 800	4280	file.exe	82
PID 800 wrote to memory of 4928	800	file.tmp	83
PID 800 wrote to memory of 4928	800	file.tmp	83
PID 800 wrote to memory of 4928	800	file.tmp	83
PID 4928 wrote to memory of 3516	4928	finalrecovery.exe	84
PID 4928 wrote to memory of 3516	4928	finalrecovery.exe	84
PID 4928 wrote to memory of 3516	4928	finalrecovery.exe	84
PID 4928 wrote to memory of 2680	4928	finalrecovery.exe	92
PID 4928 wrote to memory of 2680	4928	finalrecovery.exe	92
PID 4928 wrote to memory of 2680	4928	finalrecovery.exe	92
PID 2680 wrote to memory of 2180	2680	cmd.exe	94
PID 2680 wrote to memory of 2180	2680	cmd.exe	94
PID 2680 wrote to memory of 2180	2680	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:4280
- C:\Users\Admin\AppData\Local\Temp\is-7H6B3.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-7H6B3.tmp\file.tmp" /SL5="$8016E,1818544,71680,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:800
- - C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4928
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\H9k8eSnJUXgJEs.exe
      4⤵
      Executes dropped EXE
      PID:3516
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2680
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2180

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe

Filesize
1.9MB

MD5
9dde0d9ef1cce59fcd643c8ba592ff8e

SHA1
1cd2f3b31d124f622096e236579e6c3c3cf2e237

SHA256
24515a7d56f6b6a12a49f7a8cf1358e4e29b32b56511a957ff1ad5ba8ec1b2c1

SHA512
cca6e456d055746f03da46a8f5b4039aa29e3c75e4f58119f3636a59fbecf24e93c6f98de5d80e28035e25b78a06b8da529fd500c5dbf024f2fd26c7abec4572

Download Submit
C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe

Filesize
1.9MB

MD5
9dde0d9ef1cce59fcd643c8ba592ff8e

SHA1
1cd2f3b31d124f622096e236579e6c3c3cf2e237

SHA256
24515a7d56f6b6a12a49f7a8cf1358e4e29b32b56511a957ff1ad5ba8ec1b2c1

SHA512
cca6e456d055746f03da46a8f5b4039aa29e3c75e4f58119f3636a59fbecf24e93c6f98de5d80e28035e25b78a06b8da529fd500c5dbf024f2fd26c7abec4572

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7H6B3.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7H6B3.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-TFF0M.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\H9k8eSnJUXgJEs.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\H9k8eSnJUXgJEs.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/4280-132-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4280-154-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4280-138-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4928-143-0x0000000000400000-0x00000000013E8000-memory.dmp

Filesize
15.9MB

Download
memory/4928-150-0x0000000000400000-0x00000000013E8000-memory.dmp

Filesize
15.9MB

Download
memory/4928-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4928-142-0x0000000000400000-0x00000000013E8000-memory.dmp

Filesize
15.9MB

Download
memory/4928-153-0x0000000000400000-0x00000000013E8000-memory.dmp

Filesize
15.9MB

Download

Analysis

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