gcleaner | 6b11b9e834fc528b136446cf38003678b2d72f16e7eca64781ae88b45fdbd5ec

General

Target

file.exe
Size

1.9MB
MD5

3afb78cf48f92bdd9b6401e60448f9a8
SHA1

8a8d142b740e5c2770c4e26f241a87c3126d5eda
SHA256

6b11b9e834fc528b136446cf38003678b2d72f16e7eca64781ae88b45fdbd5ec
SHA512

9d1b632b0c1565538c19cd1e7b45ee3f9c22f54794f71991922dad8816a6cc7c3407c6b890a978c254c2191ce8f7ebc257b6dd8005fc4d5f9dcc56860f47d556
SSDEEP

49152:EGlJfsxRu1HWDYSB35d5F1POiN2KhJ6PbX0xsySL8dy3QfwV5dlLYp:5zHWDYi5d5FZOC2Kh0PGBGUMQ4TPYp

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

Processes:

FRec326.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation FRec326.exe
Executes dropped EXE 3 IoCs

Processes:

is-1G90D.tmpFRec326.exe5mNSUu3nK5ohGN.exe

pid process

220 is-1G90D.tmp
3960 FRec326.exe
2068 5mNSUu3nK5ohGN.exe
Loads dropped DLL 1 IoCs

Processes:

is-1G90D.tmp

pid process

220 is-1G90D.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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation	FRec326.exe

pid	process
220	is-1G90D.tmp
3960	FRec326.exe
2068	5mNSUu3nK5ohGN.exe

pid	process
220	is-1G90D.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-1G90D.tmp

description	ioc	process
File created	C:\Program Files (x86)\FJFsoftFR\FRec326\is-5GVS6.tmp	is-1G90D.tmp
File created	C:\Program Files (x86)\FJFsoftFR\FRec326\is-SAL5B.tmp	is-1G90D.tmp
File created	C:\Program Files (x86)\FJFsoftFR\FRec326\is-8AATC.tmp	is-1G90D.tmp
File created	C:\Program Files (x86)\FJFsoftFR\FRec326\is-6162D.tmp	is-1G90D.tmp
File created	C:\Program Files (x86)\FJFsoftFR\FRec326\data\is-AOA3E.tmp	is-1G90D.tmp
File opened for modification	C:\Program Files (x86)\FJFsoftFR\FRec326\unins000.dat	is-1G90D.tmp
File opened for modification	C:\Program Files (x86)\FJFsoftFR\FRec326\FRec326.exe	is-1G90D.tmp
File created	C:\Program Files (x86)\FJFsoftFR\FRec326\unins000.dat	is-1G90D.tmp
File created	C:\Program Files (x86)\FJFsoftFR\FRec326\is-VNO8R.tmp	is-1G90D.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

Processes:

taskkill.exe

pid process

960 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

FRec326.exe

pid process

3960 FRec326.exe
3960 FRec326.exe
3960 FRec326.exe
3960 FRec326.exe
3960 FRec326.exe
3960 FRec326.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 960 taskkill.exe

pid	process
960	taskkill.exe

pid	process
3960	FRec326.exe
3960	FRec326.exe
3960	FRec326.exe
3960	FRec326.exe
3960	FRec326.exe
3960	FRec326.exe

description	pid	process
Token: SeDebugPrivilege	960	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-1G90D.tmpFRec326.execmd.exe

description	pid	process	target process
PID 408 wrote to memory of 220	408	file.exe	is-1G90D.tmp
PID 408 wrote to memory of 220	408	file.exe	is-1G90D.tmp
PID 408 wrote to memory of 220	408	file.exe	is-1G90D.tmp
PID 220 wrote to memory of 3960	220	is-1G90D.tmp	FRec326.exe
PID 220 wrote to memory of 3960	220	is-1G90D.tmp	FRec326.exe
PID 220 wrote to memory of 3960	220	is-1G90D.tmp	FRec326.exe
PID 3960 wrote to memory of 2068	3960	FRec326.exe	5mNSUu3nK5ohGN.exe
PID 3960 wrote to memory of 2068	3960	FRec326.exe	5mNSUu3nK5ohGN.exe
PID 3960 wrote to memory of 2068	3960	FRec326.exe	5mNSUu3nK5ohGN.exe
PID 3960 wrote to memory of 1180	3960	FRec326.exe	cmd.exe
PID 3960 wrote to memory of 1180	3960	FRec326.exe	cmd.exe
PID 3960 wrote to memory of 1180	3960	FRec326.exe	cmd.exe
PID 1180 wrote to memory of 960	1180	cmd.exe	taskkill.exe
PID 1180 wrote to memory of 960	1180	cmd.exe	taskkill.exe
PID 1180 wrote to memory of 960	1180	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:408
- C:\Users\Admin\AppData\Local\Temp\is-1BV20.tmp\is-1G90D.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-1BV20.tmp\is-1G90D.tmp" /SL4 $501C0 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1755527 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:220
- - C:\Program Files (x86)\FJFsoftFR\FRec326\FRec326.exe
    "C:\Program Files (x86)\FJFsoftFR\FRec326\FRec326.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3960
  - - C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\5mNSUu3nK5ohGN.exe
      4⤵
      Executes dropped EXE
      PID:2068
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec326.exe" /f & erase "C:\Program Files (x86)\FJFsoftFR\FRec326\FRec326.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1180
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec326.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:960

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)\FJFsoftFR\FRec326\FRec326.exe

Filesize
2.1MB

MD5
730a5453ffda87170da8b4dfda0cef79

SHA1
65ca63dea86d5e926541d1834301525fd44c6380

SHA256
6fd07dd64bed848f9bdff91e52192b90527044c11f009bbbc019f6c1f93e3f7e

SHA512
f04f5d264f6ade55b5ffae1ee85ae30aa3223339215c49fe3ec6a154fe626a33913a285b8eac31cd4002780ab37919033b21e751a7017eb7c11fe4c1ee5872c5

Download Submit
C:\Program Files (x86)\FJFsoftFR\FRec326\FRec326.exe

Filesize
2.1MB

MD5
730a5453ffda87170da8b4dfda0cef79

SHA1
65ca63dea86d5e926541d1834301525fd44c6380

SHA256
6fd07dd64bed848f9bdff91e52192b90527044c11f009bbbc019f6c1f93e3f7e

SHA512
f04f5d264f6ade55b5ffae1ee85ae30aa3223339215c49fe3ec6a154fe626a33913a285b8eac31cd4002780ab37919033b21e751a7017eb7c11fe4c1ee5872c5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\YYL8D8JJ\dll[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-1BV20.tmp\is-1G90D.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-1BV20.tmp\is-1G90D.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PTRO6.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\5mNSUu3nK5ohGN.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\5mNSUu3nK5ohGN.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/220-148-0x0000000000680000-0x0000000000681000-memory.dmp

Filesize
4KB

Download
memory/220-180-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/220-198-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/408-179-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/408-199-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/408-133-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/3960-166-0x0000000000400000-0x0000000001424000-memory.dmp

Filesize
16.1MB

Download
memory/3960-174-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3960-181-0x0000000000400000-0x0000000001424000-memory.dmp

Filesize
16.1MB

Download
memory/3960-165-0x0000000000400000-0x0000000001424000-memory.dmp

Filesize
16.1MB

Download
memory/3960-197-0x0000000000400000-0x0000000001424000-memory.dmp

Filesize
16.1MB

Download

Analysis

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