gcleaner | 2d6184f6e493627fc2cdd3e5ec79d36cfaf24a395798f959ac81417f70ab861e

Analysis

max time kernel
82s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2023, 07:46

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General

Target
file.exe
Size 2.0MB
Sample230202-jl1faafe44
SHA256 2d6184f6e493627fc2cdd3e5ec79d36cfaf24a395798f959ac81417f70ab861e
MD5 550e42d8d2359f2c7d27b3b4abf3b7ec
SHA1 2a098d0b0c27972ecd5a8906ca2a3d029c97dc25
SHA512 72cd1e7c4f32913d6c821c853ea2121c74cd4aa04876f5e6609573e0331bf9b90367297574cfa297370a9042c3b5f8e5de349ccddef5482a47b310b2128ed977
SSDEEP 49152:bgbAdlZOPxixZgYynb6v65larO+jemf5pGFLCgv2MR:c8d4xi1EeC5ErO+jBG5v2MR
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

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
4012	file.tmp
2268	finalrecovery.exe
4376	Nv3Lcx.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
4012	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\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-DTUL9.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-Q4RJI.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\data\is-OEML6.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\unins000.dat	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-VLDUP.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-IE18K.tmp	file.tmp
File created	C:\Program Files (x86)\FHHsoftFR\FinalRecovery\is-NRBT2.tmp	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
2096	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2268	finalrecovery.exe
2268	finalrecovery.exe
2268	finalrecovery.exe
2268	finalrecovery.exe
2268	finalrecovery.exe
2268	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2096	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 4012	2620	file.exe	79
PID 2620 wrote to memory of 4012	2620	file.exe	79
PID 2620 wrote to memory of 4012	2620	file.exe	79
PID 4012 wrote to memory of 2268	4012	file.tmp	80
PID 4012 wrote to memory of 2268	4012	file.tmp	80
PID 4012 wrote to memory of 2268	4012	file.tmp	80
PID 2268 wrote to memory of 4376	2268	finalrecovery.exe	81
PID 2268 wrote to memory of 4376	2268	finalrecovery.exe	81
PID 2268 wrote to memory of 4376	2268	finalrecovery.exe	81
PID 2268 wrote to memory of 1224	2268	finalrecovery.exe	89
PID 2268 wrote to memory of 1224	2268	finalrecovery.exe	89
PID 2268 wrote to memory of 1224	2268	finalrecovery.exe	89
PID 1224 wrote to memory of 2096	1224	cmd.exe	91
PID 1224 wrote to memory of 2096	1224	cmd.exe	91
PID 1224 wrote to memory of 2096	1224	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Users\Admin\AppData\Local\Temp\is-JF2DC.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-JF2DC.tmp\file.tmp" /SL5="$601D0,1874886,71680,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:4012
- - C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2268
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\Nv3Lcx.exe
      4⤵
      Executes dropped EXE
      PID:4376
  - - 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:1224
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2096

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

finalrecovery.exe

Path C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe
Size 1.9MB
SHA256 17ba486ae998acdbd12fd2ca951d3855bf9818b8cdea37cabb90e9d2bf5afa3a
MD5 8e5e5b551e11ad8e182a7b106610286a
SHA1 2c8b3759429a84c963e6ed31213967529aabfee8
SHA512 17a3441da69ed37638c98847998796d1ff676e771dacd7dac955850ea75f28814e14ebfda5686822e1d1de0436e68f567b9ff4ac814a4be0e65667b0154f4c41
SSDEEP 49152:5wxRLsr3XExWc+OCHS1Xiu04CmALvkBJ2b:5wbLS3XE7+OCHSFD04Cmst
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FHHsoftFR\FinalRecovery\finalrecovery.exe
Size 1.9MB
SHA256 17ba486ae998acdbd12fd2ca951d3855bf9818b8cdea37cabb90e9d2bf5afa3a
MD5 8e5e5b551e11ad8e182a7b106610286a
SHA1 2c8b3759429a84c963e6ed31213967529aabfee8
SHA512 17a3441da69ed37638c98847998796d1ff676e771dacd7dac955850ea75f28814e14ebfda5686822e1d1de0436e68f567b9ff4ac814a4be0e65667b0154f4c41
SSDEEP 49152:5wxRLsr3XExWc+OCHS1Xiu04CmALvkBJ2b:5wbLS3XE7+OCHSFD04Cmst
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-JF2DC.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-JF2DC.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-S337K.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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Nv3Lcx.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\Nv3Lcx.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

Nv3Lcx.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\Nv3Lcx.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/2268-143-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/2268-142-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/2268-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2268-151-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/2268-154-0x0000000000400000-0x00000000013E8000-memory.dmp

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memory/2620-132-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/2620-150-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/2620-134-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/2620-155-0x0000000000400000-0x0000000000418000-memory.dmp

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