gcleaner | 4cb70b868f50f930cbb329abb30ea2d3bb7889fbe0a30b007682c3a67a51d57f

General

Target

c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.exe
Size

1.9MB
MD5

1d9cf4d3590d77064086b7d98850b697
SHA1

cce97a10df68d14862d24e160df00329d18c95b8
SHA256

c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b
SHA512

fa3c4b5e3deab029f8e3f8c77e6540dad2b4a12b43a0ecaf651cdbeabfbbf828e61a96ebc2f7f2b2c4e9d68be996a093585b4c72e414b75c48f24412139390e0
SSDEEP

49152:okug+5WfLWzZZXcTzU1XpB4SAN9Nu+vPXLWLCgv2MR:hug+2o4Tsp2SAFav2MR

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
5040	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp
4528	finalrecovery.exe
4960	m0GIYr.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
5040	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.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)\FgcsoftFR\FinalRecovery\is-FGMLH.tmp	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\unins000.dat	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-1LONT.tmp	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-PLGGQ.tmp	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\data\is-5CLPO.tmp	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp
File opened for modification	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\unins000.dat	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp
File opened for modification	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-4ICLR.tmp	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp
File created	C:\Program Files (x86)\FgcsoftFR\FinalRecovery\is-B4S9S.tmp	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.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
5024	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4528	finalrecovery.exe
4528	finalrecovery.exe
4528	finalrecovery.exe
4528	finalrecovery.exe
4528	finalrecovery.exe
4528	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5024	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 5040	2288	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.exe	82
PID 2288 wrote to memory of 5040	2288	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.exe	82
PID 2288 wrote to memory of 5040	2288	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.exe	82
PID 5040 wrote to memory of 4528	5040	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp	83
PID 5040 wrote to memory of 4528	5040	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp	83
PID 5040 wrote to memory of 4528	5040	c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp	83
PID 4528 wrote to memory of 4960	4528	finalrecovery.exe	84
PID 4528 wrote to memory of 4960	4528	finalrecovery.exe	84
PID 4528 wrote to memory of 4960	4528	finalrecovery.exe	84
PID 4528 wrote to memory of 828	4528	finalrecovery.exe	92
PID 4528 wrote to memory of 828	4528	finalrecovery.exe	92
PID 4528 wrote to memory of 828	4528	finalrecovery.exe	92
PID 828 wrote to memory of 5024	828	cmd.exe	94
PID 828 wrote to memory of 5024	828	cmd.exe	94
PID 828 wrote to memory of 5024	828	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.exe
"C:\Users\Admin\AppData\Local\Temp\c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Users\Admin\AppData\Local\Temp\is-MDIE2.tmp\c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-MDIE2.tmp\c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp" /SL5="$501C4,1732443,135168,C:\Users\Admin\AppData\Local\Temp\c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:5040
- - C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4528
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\m0GIYr.exe
      4⤵
      Executes dropped EXE
      PID:4960
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FgcsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:828
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:5024

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)\FgcsoftFR\FinalRecovery\finalrecovery.exe

Filesize
1.5MB

MD5
1688da0b89913126985c886c830c40ad

SHA1
c1f519b66114526fac0b405c97b3a010c4327ffc

SHA256
4332e5db9736e89d6b774d0dd22f676ba3084f1818e39b2c03bec29269ab76c8

SHA512
4ea48c443157dab5d2eb831125ae07de1fc169202636d00693ba01aa24b57be8a1f7d7ccb7d7ea002cf9a3f170bf70e1d1f335687e92d059a5c99c87988c3c1f

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

Filesize
1.5MB

MD5
1688da0b89913126985c886c830c40ad

SHA1
c1f519b66114526fac0b405c97b3a010c4327ffc

SHA256
4332e5db9736e89d6b774d0dd22f676ba3084f1818e39b2c03bec29269ab76c8

SHA512
4ea48c443157dab5d2eb831125ae07de1fc169202636d00693ba01aa24b57be8a1f7d7ccb7d7ea002cf9a3f170bf70e1d1f335687e92d059a5c99c87988c3c1f

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-EVF49.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MDIE2.tmp\c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MDIE2.tmp\c3db7a89609d1cc45197408412743a47ceeba84d0b22e894a97969aeebc8094b.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\m0GIYr.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\m0GIYr.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/828-153-0x0000000000000000-mapping.dmp

Download
memory/2288-151-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2288-133-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2288-156-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4528-143-0x0000000000400000-0x0000000001374000-memory.dmp

Filesize
15.5MB

Download
memory/4528-144-0x0000000000400000-0x0000000001374000-memory.dmp

Filesize
15.5MB

Download
memory/4528-142-0x0000000000400000-0x0000000001374000-memory.dmp

Filesize
15.5MB

Download
memory/4528-139-0x0000000000000000-mapping.dmp

Download
memory/4528-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4528-152-0x0000000000400000-0x0000000001374000-memory.dmp

Filesize
15.5MB

Download
memory/4528-155-0x0000000000400000-0x0000000001374000-memory.dmp

Filesize
15.5MB

Download
memory/4960-145-0x0000000000000000-mapping.dmp

Download
memory/5024-154-0x0000000000000000-mapping.dmp

Download
memory/5040-135-0x0000000000000000-mapping.dmp

Download

Analysis

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