gcleaner | 9d2300e2ba6d3b004a574f25b40b30f72ef24246857c36f4292a564a7dbbc06b

General

Target

file.exe
Size

2.0MB
MD5

2715012b6acae850af7a413e87ae78b1
SHA1

eb48021d04a48343eec65a9f34d1ab2cea464e65
SHA256

9d2300e2ba6d3b004a574f25b40b30f72ef24246857c36f4292a564a7dbbc06b
SHA512

de5881906b3ddffd993eaae0d5e208260739c580479d2287f0bd10d7132b2bcb4985c5009d29a7b70bca696e20e051249ee220f0d7d127799b9966b4f62504f4
SSDEEP

49152:ygOdHdcI/dGy9jnMLdH2I/gU10ryDvS88ytLCgv2MR:TUHdcYb9jMhNgU1bzv2MR

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
4348	file.tmp
2840	finalrecovery.exe
2092	9R9uCu.exe

Loads dropped DLL 1 IoCs

pid	Process
4348	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)\FHIsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-29L1A.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-8LFB1.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-GPVLQ.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-U8DD7.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-E1PEU.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\data\is-6AASR.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FHIsoftFR\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
4428	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2840	finalrecovery.exe
2840	finalrecovery.exe
2840	finalrecovery.exe
2840	finalrecovery.exe
2840	finalrecovery.exe
2840	finalrecovery.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2840	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4428	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4156 wrote to memory of 4348	4156	file.exe	82
PID 4156 wrote to memory of 4348	4156	file.exe	82
PID 4156 wrote to memory of 4348	4156	file.exe	82
PID 4348 wrote to memory of 2840	4348	file.tmp	83
PID 4348 wrote to memory of 2840	4348	file.tmp	83
PID 4348 wrote to memory of 2840	4348	file.tmp	83
PID 2840 wrote to memory of 2092	2840	finalrecovery.exe	84
PID 2840 wrote to memory of 2092	2840	finalrecovery.exe	84
PID 2840 wrote to memory of 2092	2840	finalrecovery.exe	84
PID 2840 wrote to memory of 4552	2840	finalrecovery.exe	92
PID 2840 wrote to memory of 4552	2840	finalrecovery.exe	92
PID 2840 wrote to memory of 4552	2840	finalrecovery.exe	92
PID 4552 wrote to memory of 4428	4552	cmd.exe	94
PID 4552 wrote to memory of 4428	4552	cmd.exe	94
PID 4552 wrote to memory of 4428	4552	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:4156
- C:\Users\Admin\AppData\Local\Temp\is-DA8VR.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-DA8VR.tmp\file.tmp" /SL5="$B004C,1805357,73216,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:4348
- - C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of WriteProcessMemory
    PID:2840
  - - C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\9R9uCu.exe
      4⤵
      Executes dropped EXE
      PID:2092
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FHIsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4552
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4428

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)\FHIsoftFR\FinalRecovery\finalrecovery.exe

Filesize
1.8MB

MD5
2a7c2376cfa77e09a068e96fe86e39d9

SHA1
f0582f42565ecebb4295b645c222199b36c45c7e

SHA256
21d86356565e0db3f3d53ccbc3079c434b024aae0e2611709ec4c05889f034f0

SHA512
4858f036a034261c9191e08c6e1b86457d970b600e8d7fed7e7a7b5fb3bb34d69843b9a7a81ced394acbf34a551501a96d52dcaa02b74d4f334235ae6def9f40

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

Filesize
1.8MB

MD5
2a7c2376cfa77e09a068e96fe86e39d9

SHA1
f0582f42565ecebb4295b645c222199b36c45c7e

SHA256
21d86356565e0db3f3d53ccbc3079c434b024aae0e2611709ec4c05889f034f0

SHA512
4858f036a034261c9191e08c6e1b86457d970b600e8d7fed7e7a7b5fb3bb34d69843b9a7a81ced394acbf34a551501a96d52dcaa02b74d4f334235ae6def9f40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-DA8VR.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-DA8VR.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-LU9Q2.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\9R9uCu.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\9R9uCu.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/2092-145-0x0000000000000000-mapping.dmp

Download
memory/2840-148-0x0000000000400000-0x00000000013D8000-memory.dmp

Filesize
15.8MB

Download
memory/2840-142-0x0000000000400000-0x00000000013D8000-memory.dmp

Filesize
15.8MB

Download
memory/2840-143-0x0000000000400000-0x00000000013D8000-memory.dmp

Filesize
15.8MB

Download
memory/2840-144-0x0000000000400000-0x00000000013D8000-memory.dmp

Filesize
15.8MB

Download
memory/2840-139-0x0000000000000000-mapping.dmp

Download
memory/2840-149-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2840-154-0x0000000000400000-0x00000000013D8000-memory.dmp

Filesize
15.8MB

Download
memory/4156-138-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/4156-132-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/4156-155-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/4348-134-0x0000000000000000-mapping.dmp

Download
memory/4428-153-0x0000000000000000-mapping.dmp

Download
memory/4552-152-0x0000000000000000-mapping.dmp

Download

Analysis

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