gcleaner | 44eb1d4e701625f7188fe330ad97148f1f40b3c045314cd7a9789d9527c8e341

Analysis

max time kernel
91s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2023, 02:17

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General

Target
file.exe
Size 1.7MB
Sample230124-cqpe9aaa2x
SHA256 44eb1d4e701625f7188fe330ad97148f1f40b3c045314cd7a9789d9527c8e341
MD5 a166f6eaea5a675f9043f5e6a21a41a9
SHA1 e2dcfb7cdb753c11cfe6b5bb51ba95d32000fb2b
SHA512 2da595bdd25a427045d1943e4a6d623c939559a1a25cc06069bc34fc0a86bb7150f8e9b9dab23f243263f419fdcbeb1dc1b3986ef06f3b6982e1cd7a80dcc219
SSDEEP 49152:ONS9nKillk7d+tqQFGMjdfu/sz67Eubotw2CIN61V:oEHllod+tqpudG3EuWBVN61V
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
2436	file.tmp
2628	finalrecovery.exe
444	f6MShfGGz50pv.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
2436	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)\FeysoftFR\FinalRecovery\is-K75OQ.tmp	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-FB740.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-OJNC6.tmp	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\data\is-7D3UC.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FeysoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-OKMAS.tmp	file.tmp
File created	C:\Program Files (x86)\FeysoftFR\FinalRecovery\is-3KVGQ.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
1812	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2628	finalrecovery.exe
2628	finalrecovery.exe
2628	finalrecovery.exe
2628	finalrecovery.exe
2628	finalrecovery.exe
2628	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1812	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 2436	3028	file.exe	79
PID 3028 wrote to memory of 2436	3028	file.exe	79
PID 3028 wrote to memory of 2436	3028	file.exe	79
PID 2436 wrote to memory of 2628	2436	file.tmp	80
PID 2436 wrote to memory of 2628	2436	file.tmp	80
PID 2436 wrote to memory of 2628	2436	file.tmp	80
PID 2628 wrote to memory of 444	2628	finalrecovery.exe	81
PID 2628 wrote to memory of 444	2628	finalrecovery.exe	81
PID 2628 wrote to memory of 444	2628	finalrecovery.exe	81
PID 2628 wrote to memory of 2540	2628	finalrecovery.exe	90
PID 2628 wrote to memory of 2540	2628	finalrecovery.exe	90
PID 2628 wrote to memory of 2540	2628	finalrecovery.exe	90
PID 2540 wrote to memory of 1812	2540	cmd.exe	92
PID 2540 wrote to memory of 1812	2540	cmd.exe	92
PID 2540 wrote to memory of 1812	2540	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\is-SM36B.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-SM36B.tmp\file.tmp" /SL5="$D0064,1565576,67072,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:2436
- - C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2628
  - - C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\f6MShfGGz50pv.exe
      4⤵
      Executes dropped EXE
      PID:444
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2540
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1812

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

Replay Monitor

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Downloads

finalrecovery.exe

Path C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 d42b68928de41804560081d7c5b50840a649a5d142e70939252e745da094608e
MD5 1d4b50a76a9043d6f6684205941afdf3
SHA1 d35367dc892db397b6edf0e45359c67039f474b7
SHA512 868b9a7b84dba31c05d253bd724c286a1cce653dc73ddc0b814ac6c5120cbb3de713a8ee79e41645aa2e6b93e6df17fde0d6c09a747290ae3a05218bd41a0544
SSDEEP 24576:eFPU/j1d1+am/GBio1Ojg49Xx/hilTcLrEVKquRuRF:VToGBmgoB/cle6fuRuR
MD5 SHA1 SHA512 SSDEEP

Submit Download

finalrecovery.exe

Path C:\Program Files (x86)\FeysoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 d42b68928de41804560081d7c5b50840a649a5d142e70939252e745da094608e
MD5 1d4b50a76a9043d6f6684205941afdf3
SHA1 d35367dc892db397b6edf0e45359c67039f474b7
SHA512 868b9a7b84dba31c05d253bd724c286a1cce653dc73ddc0b814ac6c5120cbb3de713a8ee79e41645aa2e6b93e6df17fde0d6c09a747290ae3a05218bd41a0544
SSDEEP 24576:eFPU/j1d1+am/GBio1Ojg49Xx/hilTcLrEVKquRuRF:VToGBmgoB/cle6fuRuR
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-73D14.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-SM36B.tmp\file.tmp
Size 708KB
SHA256 ab1f6283dd98be3eab521c42dd3e17bca120b75a901400f65c44f5d5bb282872
MD5 f545e0d846d3711ac76fabbc452efead
SHA1 9a34cf19df7f92e54f1aa1d67f43ce03b58d52f0
SHA512 b4bc0f35aca769273b5a98029e05adc576a949d5e75533c5244d6da6d3c90941c58fb8c263a8da421faa850d701749a1db2ed53f16729b6d8f4828403378fc8f
SSDEEP 12288:5QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kqi:CtCUA4arPEn37TzH7A6nw9yzeESUFWHV
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-SM36B.tmp\file.tmp
Size 708KB
SHA256 ab1f6283dd98be3eab521c42dd3e17bca120b75a901400f65c44f5d5bb282872
MD5 f545e0d846d3711ac76fabbc452efead
SHA1 9a34cf19df7f92e54f1aa1d67f43ce03b58d52f0
SHA512 b4bc0f35aca769273b5a98029e05adc576a949d5e75533c5244d6da6d3c90941c58fb8c263a8da421faa850d701749a1db2ed53f16729b6d8f4828403378fc8f
SSDEEP 12288:5QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kqi:CtCUA4arPEn37TzH7A6nw9yzeESUFWHV
MD5 SHA1 SHA512 SSDEEP

Submit Download

f6MShfGGz50pv.exe

Path C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\f6MShfGGz50pv.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

f6MShfGGz50pv.exe

Path C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\f6MShfGGz50pv.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2628-143-0x0000000000400000-0x0000000001358000-memory.dmp

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memory/2628-142-0x0000000000400000-0x0000000001358000-memory.dmp

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memory/2628-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2628-151-0x0000000000400000-0x0000000001358000-memory.dmp

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memory/2628-154-0x0000000000400000-0x0000000001358000-memory.dmp

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memory/3028-132-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3028-150-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3028-134-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3028-155-0x0000000000400000-0x0000000000417000-memory.dmp

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