gcleaner | b5752b74a06415c0a9d6b72a48d2b6a2eac2bba6b59657ed8118eb0d53c8fb11

General

Target

file.exe
Size

1.9MB
MD5

40cd55048f88789ccd408542e4aa312d
SHA1

427e60579b5ae75ea2210b369f7c2ff0c8130959
SHA256

b5752b74a06415c0a9d6b72a48d2b6a2eac2bba6b59657ed8118eb0d53c8fb11
SHA512

e0f559be3d632e2ec3be0cce06217770ab58795e2fca8f90971375fea8cb6add6bb1499debe436acd1d337145f84acfab1de2b14f51f39d59df3af877e9142fe
SSDEEP

49152:EGlJfswEH49txWLt5xGh8fcR+m+9f4v6ZV/5AU6CKWCq5dlLYp:5+mStHEkwo9fo6L5AU6CKBIPYp

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
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

Processes:

FRec328.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation FRec328.exe
Executes dropped EXE 3 IoCs

Processes:

is-2H6N3.tmpFRec328.exe1pt5NPQ.exe

pid process

2196 is-2H6N3.tmp
4712 FRec328.exe
1068 1pt5NPQ.exe
Loads dropped DLL 1 IoCs

Processes:

is-2H6N3.tmp

pid process

2196 is-2H6N3.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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation	FRec328.exe

pid	process
2196	is-2H6N3.tmp
4712	FRec328.exe
1068	1pt5NPQ.exe

pid	process
2196	is-2H6N3.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-2H6N3.tmp

description	ioc	process
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-66FUF.tmp	is-2H6N3.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-NNUU7.tmp	is-2H6N3.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\data\is-R0Q00.tmp	is-2H6N3.tmp
File opened for modification	C:\Program Files (x86)\FJHsoftFR\FRec328\unins000.dat	is-2H6N3.tmp
File opened for modification	C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe	is-2H6N3.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\unins000.dat	is-2H6N3.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-SDVQ7.tmp	is-2H6N3.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-KBJL8.tmp	is-2H6N3.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-GGLDN.tmp	is-2H6N3.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

Processes:

taskkill.exe

pid process

4784 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

FRec328.exe

pid process

4712 FRec328.exe
4712 FRec328.exe
4712 FRec328.exe
4712 FRec328.exe
4712 FRec328.exe
4712 FRec328.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 4784 taskkill.exe

pid	process
4784	taskkill.exe

pid	process
4712	FRec328.exe
4712	FRec328.exe
4712	FRec328.exe
4712	FRec328.exe
4712	FRec328.exe
4712	FRec328.exe

description	pid	process
Token: SeDebugPrivilege	4784	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-2H6N3.tmpFRec328.execmd.exe

description	pid	process	target process
PID 4988 wrote to memory of 2196	4988	file.exe	is-2H6N3.tmp
PID 4988 wrote to memory of 2196	4988	file.exe	is-2H6N3.tmp
PID 4988 wrote to memory of 2196	4988	file.exe	is-2H6N3.tmp
PID 2196 wrote to memory of 4712	2196	is-2H6N3.tmp	FRec328.exe
PID 2196 wrote to memory of 4712	2196	is-2H6N3.tmp	FRec328.exe
PID 2196 wrote to memory of 4712	2196	is-2H6N3.tmp	FRec328.exe
PID 4712 wrote to memory of 1068	4712	FRec328.exe	1pt5NPQ.exe
PID 4712 wrote to memory of 1068	4712	FRec328.exe	1pt5NPQ.exe
PID 4712 wrote to memory of 1068	4712	FRec328.exe	1pt5NPQ.exe
PID 4712 wrote to memory of 3924	4712	FRec328.exe	cmd.exe
PID 4712 wrote to memory of 3924	4712	FRec328.exe	cmd.exe
PID 4712 wrote to memory of 3924	4712	FRec328.exe	cmd.exe
PID 3924 wrote to memory of 4784	3924	cmd.exe	taskkill.exe
PID 3924 wrote to memory of 4784	3924	cmd.exe	taskkill.exe
PID 3924 wrote to memory of 4784	3924	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4988

C:\Users\Admin\AppData\Local\Temp\is-5SRRN.tmp\is-2H6N3.tmp
"C:\Users\Admin\AppData\Local\Temp\is-5SRRN.tmp\is-2H6N3.tmp" /SL4 $9002E "C:\Users\Admin\AppData\Local\Temp\file.exe" 1780698 52736
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2196

C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe
"C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe"
3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4712

C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\1pt5NPQ.exe
4⤵
- Executes dropped EXE
PID:1068

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "FRec328.exe" /f & erase "C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:3924

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "FRec328.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4784

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe
Filesize
1.7MB

MD5
31eab9eea0539a56ba7ecc909697a8e7

SHA1
0d0e8fd5bee67c7e52c4675b37672b4b7938e031

SHA256
bea2babb5a75af547a488ae8356b60ab3fc91fa3e1ef64b12a34568cfa475e5d

SHA512
5b3d10d4238bcedce8870714181a67b3360d9c1d6b145d159ebc3d17d292cf837e104c6c2565b664a72ab824eb408c699b4cadc7727b3c0a817d80e4cd73952a

Download Submit
C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe
Filesize
1.7MB

MD5
31eab9eea0539a56ba7ecc909697a8e7

SHA1
0d0e8fd5bee67c7e52c4675b37672b4b7938e031

SHA256
bea2babb5a75af547a488ae8356b60ab3fc91fa3e1ef64b12a34568cfa475e5d

SHA512
5b3d10d4238bcedce8870714181a67b3360d9c1d6b145d159ebc3d17d292cf837e104c6c2565b664a72ab824eb408c699b4cadc7727b3c0a817d80e4cd73952a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\YYL8D8JJ\dll[1].htm
Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-5SRRN.tmp\is-2H6N3.tmp
Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-5SRRN.tmp\is-2H6N3.tmp
Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-SR8PI.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\1pt5NPQ.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\1pt5NPQ.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/2196-148-0x0000000000710000-0x0000000000711000-memory.dmp

Filesize
4KB

Download
memory/2196-180-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2196-198-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/4712-166-0x0000000000400000-0x00000000013B2000-memory.dmp

Filesize
15.7MB

Download
memory/4712-174-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4712-181-0x0000000000400000-0x00000000013B2000-memory.dmp

Filesize
15.7MB

Download
memory/4712-165-0x0000000000400000-0x00000000013B2000-memory.dmp

Filesize
15.7MB

Download
memory/4712-197-0x0000000000400000-0x00000000013B2000-memory.dmp

Filesize
15.7MB

Download
memory/4988-179-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4988-199-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4988-133-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download

Analysis

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