gcleaner | 3ef58b6f1e1de58c877afb582affe3e176b41b01ca6f3ddf49bbd179c16b4bbd

Analysis

max time kernel
59s
max time network
61s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
22/01/2023, 04:48

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General

Target
file.exe
Size 1.9MB
Sample230122-fe4mksfc52
SHA256 3ef58b6f1e1de58c877afb582affe3e176b41b01ca6f3ddf49bbd179c16b4bbd
MD5 2889b3e8dec762e14ff6fe49d506444a
SHA1 6b22562b0fea12fe8af76642aa50f57fd869c0ed
SHA512 89cee752bbf3551df642a311ff6fb81cdcdfe31db68a3fb4284f35aec0da8b232d1e74480a3df7dd1fb2342fe810b6555bf6b800c70949c45710fcd60d5d7921
SSDEEP 49152:kb/YMSP1PP95kADUYmw2lkSkzpQQH41XkV+Y:8w3H95n1LzbH410V+Y
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
868	file.tmp
964	finalrecovery.exe
1112	BQSGPKKkkAK.exe

Loads dropped DLL 6 IoCs

pid	Process
1724	file.exe
868	file.tmp
868	file.tmp
868	file.tmp
868	file.tmp
964	finalrecovery.exe

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)\FexsoftFR\FinalRecovery\is-OBGOA.tmp	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\is-R0JL6.tmp	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\is-FJ6T3.tmp	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\data\is-5C5PU.tmp	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\is-29AVP.tmp	file.tmp
File created	C:\Program Files (x86)\FexsoftFR\FinalRecovery\is-6J918.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FexsoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FexsoftFR\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
1204	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
964	finalrecovery.exe
964	finalrecovery.exe
964	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1204	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 868	1724	file.exe	28
PID 1724 wrote to memory of 868	1724	file.exe	28
PID 1724 wrote to memory of 868	1724	file.exe	28
PID 1724 wrote to memory of 868	1724	file.exe	28
PID 1724 wrote to memory of 868	1724	file.exe	28
PID 1724 wrote to memory of 868	1724	file.exe	28
PID 1724 wrote to memory of 868	1724	file.exe	28
PID 868 wrote to memory of 964	868	file.tmp	29
PID 868 wrote to memory of 964	868	file.tmp	29
PID 868 wrote to memory of 964	868	file.tmp	29
PID 868 wrote to memory of 964	868	file.tmp	29
PID 964 wrote to memory of 1112	964	finalrecovery.exe	30
PID 964 wrote to memory of 1112	964	finalrecovery.exe	30
PID 964 wrote to memory of 1112	964	finalrecovery.exe	30
PID 964 wrote to memory of 1112	964	finalrecovery.exe	30
PID 964 wrote to memory of 1456	964	finalrecovery.exe	33
PID 964 wrote to memory of 1456	964	finalrecovery.exe	33
PID 964 wrote to memory of 1456	964	finalrecovery.exe	33
PID 964 wrote to memory of 1456	964	finalrecovery.exe	33
PID 1456 wrote to memory of 1204	1456	cmd.exe	35
PID 1456 wrote to memory of 1204	1456	cmd.exe	35
PID 1456 wrote to memory of 1204	1456	cmd.exe	35
PID 1456 wrote to memory of 1204	1456	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\is-3JJ9M.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-3JJ9M.tmp\file.tmp" /SL5="$70122,1756081,211456,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:868
- - C:\Program Files (x86)\FexsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FexsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:964
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\BQSGPKKkkAK.exe
      4⤵
      Executes dropped EXE
      PID:1112
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FexsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1456
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1204

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)\FexsoftFR\FinalRecovery\finalrecovery.exe
Size 1.5MB
SHA256 f019271651f2c972784f6bdbde8e12791f17becba3598aaaa5332b20cf7e8630
MD5 2619ab80e650e28635c9b140d689fc38
SHA1 acd229857c2672b164905afca776bfb3755204cc
SHA512 68cabf19f65dcc7efca86a6f4df985de7c20c320c89de7ec83bcae8cdc5dbcfe1cfee81e73720d8c848d579a7b87e52a617efa0d6e7514b2f0e0eb704565498c
SSDEEP 24576:eDdsf7i6bwxfxWqlfaaIvufnXpm/G0iEzBz5RnPqNdm4N9g8e05FwxTIyL6Z:BzbuQqNa98aG0NhMVR5KxT9i
MD5 SHA1 SHA512 SSDEEP

Submit Download

finalrecovery.exe

Path C:\Program Files (x86)\FexsoftFR\FinalRecovery\finalrecovery.exe
Size 1.5MB
SHA256 f019271651f2c972784f6bdbde8e12791f17becba3598aaaa5332b20cf7e8630
MD5 2619ab80e650e28635c9b140d689fc38
SHA1 acd229857c2672b164905afca776bfb3755204cc
SHA512 68cabf19f65dcc7efca86a6f4df985de7c20c320c89de7ec83bcae8cdc5dbcfe1cfee81e73720d8c848d579a7b87e52a617efa0d6e7514b2f0e0eb704565498c
SSDEEP 24576:eDdsf7i6bwxfxWqlfaaIvufnXpm/G0iEzBz5RnPqNdm4N9g8e05FwxTIyL6Z:BzbuQqNa98aG0NhMVR5KxT9i
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-3JJ9M.tmp\file.tmp
Size 849KB
SHA256 ae9de9f9dbe29fe0996d144850b768c31a132d96da041d2ee0b7009675ec5af0
MD5 779b6034396cfd96041149db13d92b42
SHA1 50611e4249ee9647d5840931f06960bf0ef20ec5
SHA512 33d04621bf43a56db68c5f937548d653290c91120c7ec61babeca4efd20b92a22d2c75423ffc001e91f9e04b544743e2d35412cf7a5f93fea1857a29fe1a6d01
SSDEEP 24576:8tCUA4arPEn37TzH7A6nw9yzeESUFWHc73itXEx9R/:8kdrP837TzH7A6nV7FMcjRT
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-3JJ9M.tmp\file.tmp
Size 849KB
SHA256 ae9de9f9dbe29fe0996d144850b768c31a132d96da041d2ee0b7009675ec5af0
MD5 779b6034396cfd96041149db13d92b42
SHA1 50611e4249ee9647d5840931f06960bf0ef20ec5
SHA512 33d04621bf43a56db68c5f937548d653290c91120c7ec61babeca4efd20b92a22d2c75423ffc001e91f9e04b544743e2d35412cf7a5f93fea1857a29fe1a6d01
SSDEEP 24576:8tCUA4arPEn37TzH7A6nw9yzeESUFWHc73itXEx9R/:8kdrP837TzH7A6nV7FMcjRT
MD5 SHA1 SHA512 SSDEEP

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BQSGPKKkkAK.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\BQSGPKKkkAK.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

finalrecovery.exe

Path \Program Files (x86)\FexsoftFR\FinalRecovery\finalrecovery.exe
Size 1.5MB
SHA256 f019271651f2c972784f6bdbde8e12791f17becba3598aaaa5332b20cf7e8630
MD5 2619ab80e650e28635c9b140d689fc38
SHA1 acd229857c2672b164905afca776bfb3755204cc
SHA512 68cabf19f65dcc7efca86a6f4df985de7c20c320c89de7ec83bcae8cdc5dbcfe1cfee81e73720d8c848d579a7b87e52a617efa0d6e7514b2f0e0eb704565498c
SSDEEP 24576:eDdsf7i6bwxfxWqlfaaIvufnXpm/G0iEzBz5RnPqNdm4N9g8e05FwxTIyL6Z:BzbuQqNa98aG0NhMVR5KxT9i
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path \Users\Admin\AppData\Local\Temp\is-3JJ9M.tmp\file.tmp
Size 849KB
SHA256 ae9de9f9dbe29fe0996d144850b768c31a132d96da041d2ee0b7009675ec5af0
MD5 779b6034396cfd96041149db13d92b42
SHA1 50611e4249ee9647d5840931f06960bf0ef20ec5
SHA512 33d04621bf43a56db68c5f937548d653290c91120c7ec61babeca4efd20b92a22d2c75423ffc001e91f9e04b544743e2d35412cf7a5f93fea1857a29fe1a6d01
SSDEEP 24576:8tCUA4arPEn37TzH7A6nw9yzeESUFWHc73itXEx9R/:8kdrP837TzH7A6nV7FMcjRT
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-92V34.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-92V34.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-92V34.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

BQSGPKKkkAK.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\BQSGPKKkkAK.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/868-77-0x00000000035F0000-0x000000000456C000-memory.dmp

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memory/868-69-0x00000000035F0000-0x000000000456C000-memory.dmp

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memory/964-70-0x0000000000400000-0x000000000137C000-memory.dmp

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memory/964-79-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/964-73-0x0000000000400000-0x000000000137C000-memory.dmp

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memory/964-85-0x0000000000400000-0x000000000137C000-memory.dmp

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memory/964-71-0x0000000000400000-0x000000000137C000-memory.dmp

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memory/964-82-0x0000000000400000-0x000000000137C000-memory.dmp

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memory/964-78-0x0000000000400000-0x000000000137C000-memory.dmp

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memory/1724-68-0x0000000000400000-0x000000000043B000-memory.dmp

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memory/1724-54-0x0000000076771000-0x0000000076773000-memory.dmp

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memory/1724-86-0x0000000000400000-0x000000000043B000-memory.dmp

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memory/1724-55-0x0000000000400000-0x000000000043B000-memory.dmp

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