gcleaner | d111ec53f8b2b607690efdb923ef287b18bcc25c656e1b0c1ea327d1416899f3

Analysis

max time kernel
91s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2023, 03:47

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General

Target
file.exe
Size 2.2MB
Sample230204-eb9hzsff9t
SHA256 d111ec53f8b2b607690efdb923ef287b18bcc25c656e1b0c1ea327d1416899f3
MD5 44383d8b4fdd4732fb6ff0174433529a
SHA1 ed6257749dd594ed0a535cf56bbe32dcc10ead07
SHA512 04e03323e23cc7fa1a09faaa9728586e715a9ceb5cb104c782624395f0882215f6cab32d3f7f4fa789fe8ba66703ce5af6b2dbdc264ab15866a39724c6fb23b5
SSDEEP 49152:A2ZPbwklvCECBcs6hSgaVhjvHufecegP4xxiLCgv2MR:Njwkl/CaxcJHufezbxEv2MR
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

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	FRec24.exe

Executes dropped EXE 3 IoCs

pid	Process
5116	file.tmp
2128	FRec24.exe
1560	lrH1iGvyxMgDj.exe

Loads dropped DLL 1 IoCs

pid	Process
5116	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)\FHJsoftFR\FRec24\is-CGVJ8.tmp	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\data\is-PJHPA.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHJsoftFR\FRec24\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\is-ELP0I.tmp	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\is-AII2F.tmp	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\is-I0SBC.tmp	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\is-F2T9E.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
3884	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2128	FRec24.exe
2128	FRec24.exe
2128	FRec24.exe
2128	FRec24.exe
2128	FRec24.exe
2128	FRec24.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3884	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 5116	1740	file.exe	79
PID 1740 wrote to memory of 5116	1740	file.exe	79
PID 1740 wrote to memory of 5116	1740	file.exe	79
PID 5116 wrote to memory of 2128	5116	file.tmp	80
PID 5116 wrote to memory of 2128	5116	file.tmp	80
PID 5116 wrote to memory of 2128	5116	file.tmp	80
PID 2128 wrote to memory of 1560	2128	FRec24.exe	81
PID 2128 wrote to memory of 1560	2128	FRec24.exe	81
PID 2128 wrote to memory of 1560	2128	FRec24.exe	81
PID 2128 wrote to memory of 2884	2128	FRec24.exe	89
PID 2128 wrote to memory of 2884	2128	FRec24.exe	89
PID 2128 wrote to memory of 2884	2128	FRec24.exe	89
PID 2884 wrote to memory of 3884	2884	cmd.exe	91
PID 2884 wrote to memory of 3884	2884	cmd.exe	91
PID 2884 wrote to memory of 3884	2884	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:1740
- C:\Users\Admin\AppData\Local\Temp\is-HJ9US.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-HJ9US.tmp\file.tmp" /SL5="$8003A,2032626,342016,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:5116
- - C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe
    "C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2128
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\lrH1iGvyxMgDj.exe
      4⤵
      Executes dropped EXE
      PID:1560
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec24.exe" /f & erase "C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2884
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec24.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3884

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

FRec24.exe

Path C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe
Size 1.8MB
SHA256 b65109cd6d5155032a53cc3ea02bb2c61fe94022d3aad7241ee7126793f74a54
MD5 b31afabe5b81eefae9f3fd39df162704
SHA1 1da840b754542e3fe772b98a65ab7674e1dc026e
SHA512 7dcfcbdd3ab760b2c802b8c5faffee3572e89bf26bc95158a10221462b3c1c770241a9d5912cccdd0d51358b2aa54bf58122095609dacb069ac24fd1dd45ea92
SSDEEP 49152:eurYBurMurPur/zTurcurENurTurSLJFyHsmtrb7wH:eurEurMurPurrTurcurENurTurSLJFyG
MD5 SHA1 SHA512 SSDEEP

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FRec24.exe

Path C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe
Size 1.8MB
SHA256 b65109cd6d5155032a53cc3ea02bb2c61fe94022d3aad7241ee7126793f74a54
MD5 b31afabe5b81eefae9f3fd39df162704
SHA1 1da840b754542e3fe772b98a65ab7674e1dc026e
SHA512 7dcfcbdd3ab760b2c802b8c5faffee3572e89bf26bc95158a10221462b3c1c770241a9d5912cccdd0d51358b2aa54bf58122095609dacb069ac24fd1dd45ea92
SSDEEP 49152:eurYBurMurPur/zTurcurENurTurSLJFyHsmtrb7wH:eurEurMurPurrTurcurENurTurSLJFyG
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-A0UD2.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-HJ9US.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-HJ9US.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

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lrH1iGvyxMgDj.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\lrH1iGvyxMgDj.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

lrH1iGvyxMgDj.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\lrH1iGvyxMgDj.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/1740-155-0x0000000000400000-0x000000000045A000-memory.dmp

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memory/1740-132-0x0000000000400000-0x000000000045A000-memory.dmp

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memory/1740-150-0x0000000000400000-0x000000000045A000-memory.dmp

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memory/2128-143-0x0000000000400000-0x00000000013D6000-memory.dmp

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memory/2128-142-0x0000000000400000-0x00000000013D6000-memory.dmp

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memory/2128-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2128-141-0x0000000000400000-0x00000000013D6000-memory.dmp

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memory/2128-151-0x0000000000400000-0x00000000013D6000-memory.dmp

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memory/2128-154-0x0000000000400000-0x00000000013D6000-memory.dmp

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