gcleaner | 439ccd94d3a218b5243fc7f212ab5378a0ec4e8fe62be9d6c7907cc478fe0c46

General

Target

file.exe
Size

2.0MB
MD5

5d4eabc74e9164d5eedf788f55bf61cc
SHA1

9dcfe26000dd4c77d13b949b9a65523e834abf4d
SHA256

439ccd94d3a218b5243fc7f212ab5378a0ec4e8fe62be9d6c7907cc478fe0c46
SHA512

dbd8e11781289a29e3d2a2c9603fc8f043dc48c1c133d2458b4f4f8240080b085a1705dc80c32b09ff19671e476946dfc00e03d7be8419796e5b686459bedd96
SSDEEP

49152:bgsT/6tQ5xBGKu6qpK87ouf7Z+V8oAzocLCgv2MR:c46tQ8t6qpqctbb7v2MR

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

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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Executes dropped EXE 3 IoCs

pid	Process
4960	file.tmp
2036	finalrecovery.exe
1384	oB3aUqqwM7.exe

Loads dropped DLL 1 IoCs

pid	Process
4960	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\is-87BTH.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\data\is-UL0OH.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-OHGQU.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-D6FC6.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-EBC4T.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-520NV.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	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
1400	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2036	finalrecovery.exe
2036	finalrecovery.exe
2036	finalrecovery.exe
2036	finalrecovery.exe
2036	finalrecovery.exe
2036	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1400	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 4960	4936	file.exe	83
PID 4936 wrote to memory of 4960	4936	file.exe	83
PID 4936 wrote to memory of 4960	4936	file.exe	83
PID 4960 wrote to memory of 2036	4960	file.tmp	84
PID 4960 wrote to memory of 2036	4960	file.tmp	84
PID 4960 wrote to memory of 2036	4960	file.tmp	84
PID 2036 wrote to memory of 1384	2036	finalrecovery.exe	85
PID 2036 wrote to memory of 1384	2036	finalrecovery.exe	85
PID 2036 wrote to memory of 1384	2036	finalrecovery.exe	85
PID 2036 wrote to memory of 1048	2036	finalrecovery.exe	93
PID 2036 wrote to memory of 1048	2036	finalrecovery.exe	93
PID 2036 wrote to memory of 1048	2036	finalrecovery.exe	93
PID 1048 wrote to memory of 1400	1048	cmd.exe	95
PID 1048 wrote to memory of 1400	1048	cmd.exe	95
PID 1048 wrote to memory of 1400	1048	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Users\Admin\AppData\Local\Temp\is-H39T9.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-H39T9.tmp\file.tmp" /SL5="$90040,1836365,71680,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:4960
- - C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2036
  - - C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\oB3aUqqwM7.exe
      4⤵
      Executes dropped EXE
      PID:1384
  - - 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:1048
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1400

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
e8fe41deb20be69ec8e3fa4cdc23b292

SHA1
b98e44954c48078121d87bf319cf5384079d82bf

SHA256
18c2262678406658605d08d5e8478e47e91921f696ef021eb851d994ab560585

SHA512
9f7ffba1c35855e27e5a4109559e3017d2d6bb52405c0b656831b4893915fce3232bb06e8ccd475671290fc6ff9c9310ca742c27620bf90873955525ce3257ee

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

Filesize
1.9MB

MD5
e8fe41deb20be69ec8e3fa4cdc23b292

SHA1
b98e44954c48078121d87bf319cf5384079d82bf

SHA256
18c2262678406658605d08d5e8478e47e91921f696ef021eb851d994ab560585

SHA512
9f7ffba1c35855e27e5a4109559e3017d2d6bb52405c0b656831b4893915fce3232bb06e8ccd475671290fc6ff9c9310ca742c27620bf90873955525ce3257ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-9L6JG.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-H39T9.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-H39T9.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\oB3aUqqwM7.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\oB3aUqqwM7.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/2036-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2036-144-0x0000000000400000-0x00000000013E8000-memory.dmp

Filesize
15.9MB

Download
memory/2036-143-0x0000000000400000-0x00000000013E8000-memory.dmp

Filesize
15.9MB

Download
memory/2036-142-0x0000000000400000-0x00000000013E8000-memory.dmp

Filesize
15.9MB

Download
memory/2036-151-0x0000000000400000-0x00000000013E8000-memory.dmp

Filesize
15.9MB

Download
memory/2036-154-0x0000000000400000-0x00000000013E8000-memory.dmp

Filesize
15.9MB

Download
memory/4936-132-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4936-138-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4936-155-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download

Analysis

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