gcleaner | e8079c283cdf53221bd815deef6b33ace170cb1811ce2d2ab79dbc763ba3794a

General

Target

file.exe
Size

2.0MB
MD5

56619eb249a4bb7fd54b59b5f6d8b1c9
SHA1

316e051a18fd785a9bf1d5814a9b42f6e74c7eae
SHA256

e8079c283cdf53221bd815deef6b33ace170cb1811ce2d2ab79dbc763ba3794a
SHA512

9b13fd0402aa138ec954c832e10f70d2e6defba47b7de36c2df94d9e12ff7cd0c3fe294e86786fa3fc157d3b3bddbd7dc43271b457e87e14e854ad5627855fd6
SSDEEP

49152:yg9gVUYilVxGMrn220Q6IT8qh9qfh2UkLCgv2MR:TKV4xDP0QJTPaAUUv2MR

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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Executes dropped EXE 3 IoCs

pid	Process
4984	file.tmp
1288	finalrecovery.exe
4104	7YppBpGL.exe

Loads dropped DLL 1 IoCs

pid	Process
4984	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\is-T19F8.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-4INSP.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\data\is-1JAKA.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-CN6NV.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-9BIQN.tmp	file.tmp
File created	C:\Program Files (x86)\FHIsoftFR\FinalRecovery\is-9P4CA.tmp	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
1036	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1288	finalrecovery.exe
1288	finalrecovery.exe
1288	finalrecovery.exe
1288	finalrecovery.exe
1288	finalrecovery.exe
1288	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1036	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 4984	4736	file.exe	81
PID 4736 wrote to memory of 4984	4736	file.exe	81
PID 4736 wrote to memory of 4984	4736	file.exe	81
PID 4984 wrote to memory of 1288	4984	file.tmp	82
PID 4984 wrote to memory of 1288	4984	file.tmp	82
PID 4984 wrote to memory of 1288	4984	file.tmp	82
PID 1288 wrote to memory of 4104	1288	finalrecovery.exe	83
PID 1288 wrote to memory of 4104	1288	finalrecovery.exe	83
PID 1288 wrote to memory of 4104	1288	finalrecovery.exe	83
PID 1288 wrote to memory of 5008	1288	finalrecovery.exe	91
PID 1288 wrote to memory of 5008	1288	finalrecovery.exe	91
PID 1288 wrote to memory of 5008	1288	finalrecovery.exe	91
PID 5008 wrote to memory of 1036	5008	cmd.exe	93
PID 5008 wrote to memory of 1036	5008	cmd.exe	93
PID 5008 wrote to memory of 1036	5008	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Users\Admin\AppData\Local\Temp\is-IPM8N.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-IPM8N.tmp\file.tmp" /SL5="$90030,1838309,73216,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:4984
- - 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 use of WriteProcessMemory
    PID:1288
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\7YppBpGL.exe
      4⤵
      Executes dropped EXE
      PID:4104
  - - 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:5008
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1036

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
82a826aa55e0334c68dede69c4d1d17d

SHA1
64a748f17f08fb0715f33059bc093c188db07a68

SHA256
13a7d1b0991ff7d86e81610d4f755cad69f651bf5ce72055c23e1c8a183bb53d

SHA512
9816c1f105fafca93a644ebbcc4ce5fb1203532c95b818727880e280a7758a2e3d4dbf85ac9d93272359532231da09a14ee759c007fb22f7d05cffe5180530cc

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

Filesize
1.8MB

MD5
82a826aa55e0334c68dede69c4d1d17d

SHA1
64a748f17f08fb0715f33059bc093c188db07a68

SHA256
13a7d1b0991ff7d86e81610d4f755cad69f651bf5ce72055c23e1c8a183bb53d

SHA512
9816c1f105fafca93a644ebbcc4ce5fb1203532c95b818727880e280a7758a2e3d4dbf85ac9d93272359532231da09a14ee759c007fb22f7d05cffe5180530cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-AJV6O.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-IPM8N.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-IPM8N.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\7YppBpGL.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\7YppBpGL.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1288-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1288-143-0x0000000000400000-0x00000000013D8000-memory.dmp

Filesize
15.8MB

Download
memory/1288-142-0x0000000000400000-0x00000000013D8000-memory.dmp

Filesize
15.8MB

Download
memory/1288-144-0x0000000000400000-0x00000000013D8000-memory.dmp

Filesize
15.8MB

Download
memory/1288-151-0x0000000000400000-0x00000000013D8000-memory.dmp

Filesize
15.8MB

Download
memory/1288-154-0x0000000000400000-0x00000000013D8000-memory.dmp

Filesize
15.8MB

Download
memory/4736-138-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/4736-132-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/4736-155-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download

Analysis

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