gcleaner | 4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1

General

Target

file.exe
Size

1.9MB
MD5

c707563d073332ea3c40d15197b25de2
SHA1

425a9f25d638e5ae791d4ec0969b5f119afd9043
SHA256

4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1
SHA512

b89fe8fae2a1af0d50c26123e02a7c0301e34815f9796150305dfbb61d73d9000f60450dca2623d2614cb9652f204bf87c36ff2703f5aeb07107139c9f133be9
SSDEEP

49152:EGlJfsUsCSwYqUGz+1yQMYhIcyYueJnf9zV9Rg0IafR/5dlLYp:5NlFTUw+wpx9qf9B9a0IaffPYp

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-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	FRec328.exe

Executes dropped EXE 3 IoCs

Processes:

is-1LRKA.tmpFRec328.exeKwvH7UnIKZEkmP.exe

pid process

4736 is-1LRKA.tmp
1436 FRec328.exe
4976 KwvH7UnIKZEkmP.exe
Loads dropped DLL 1 IoCs

Processes:

is-1LRKA.tmp

pid process

4736 is-1LRKA.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

pid	process
4736	is-1LRKA.tmp
1436	FRec328.exe
4976	KwvH7UnIKZEkmP.exe

pid	process
4736	is-1LRKA.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-1LRKA.tmp

description	ioc	process
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-U9UO6.tmp	is-1LRKA.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-RF48E.tmp	is-1LRKA.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-5I8KA.tmp	is-1LRKA.tmp
File opened for modification	C:\Program Files (x86)\FJHsoftFR\FRec328\unins000.dat	is-1LRKA.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\unins000.dat	is-1LRKA.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-S6DV5.tmp	is-1LRKA.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-CFAFM.tmp	is-1LRKA.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\data\is-BEO0V.tmp	is-1LRKA.tmp
File opened for modification	C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe	is-1LRKA.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

3544 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

FRec328.exe

pid process

1436 FRec328.exe
1436 FRec328.exe
1436 FRec328.exe
1436 FRec328.exe
1436 FRec328.exe
1436 FRec328.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 3544 taskkill.exe

pid	process
3544	taskkill.exe

pid	process
1436	FRec328.exe
1436	FRec328.exe
1436	FRec328.exe
1436	FRec328.exe
1436	FRec328.exe
1436	FRec328.exe

description	pid	process
Token: SeDebugPrivilege	3544	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-1LRKA.tmpFRec328.execmd.exe

description	pid	process	target process
PID 2132 wrote to memory of 4736	2132	file.exe	is-1LRKA.tmp
PID 2132 wrote to memory of 4736	2132	file.exe	is-1LRKA.tmp
PID 2132 wrote to memory of 4736	2132	file.exe	is-1LRKA.tmp
PID 4736 wrote to memory of 1436	4736	is-1LRKA.tmp	FRec328.exe
PID 4736 wrote to memory of 1436	4736	is-1LRKA.tmp	FRec328.exe
PID 4736 wrote to memory of 1436	4736	is-1LRKA.tmp	FRec328.exe
PID 1436 wrote to memory of 4976	1436	FRec328.exe	KwvH7UnIKZEkmP.exe
PID 1436 wrote to memory of 4976	1436	FRec328.exe	KwvH7UnIKZEkmP.exe
PID 1436 wrote to memory of 4976	1436	FRec328.exe	KwvH7UnIKZEkmP.exe
PID 1436 wrote to memory of 3336	1436	FRec328.exe	cmd.exe
PID 1436 wrote to memory of 3336	1436	FRec328.exe	cmd.exe
PID 1436 wrote to memory of 3336	1436	FRec328.exe	cmd.exe
PID 3336 wrote to memory of 3544	3336	cmd.exe	taskkill.exe
PID 3336 wrote to memory of 3544	3336	cmd.exe	taskkill.exe
PID 3336 wrote to memory of 3544	3336	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:2132

C:\Users\Admin\AppData\Local\Temp\is-3IV06.tmp\is-1LRKA.tmp
"C:\Users\Admin\AppData\Local\Temp\is-3IV06.tmp\is-1LRKA.tmp" /SL4 $801B8 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1775774 52736
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4736

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:1436

C:\Users\Admin\AppData\Roaming\{9e74baef-b191-11ed-b7c8-806e6f6e6963}\KwvH7UnIKZEkmP.exe
4⤵
- Executes dropped EXE
PID:4976

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:3336

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "FRec328.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3544

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

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Downloads

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

MD5
6d78bda128f8538d33da49ca3f1f8ffc

SHA1
9d86b4c5923ebf9d578412f2f0d32aee47ba4941

SHA256
ddc227fa75e792bd4b7119656d48b008a9410b7aeb572e12bda2ac0b0af42d11

SHA512
1a14b1cd6e6542441452929cf5d199e136d24839013bc530fe730c062057370d75eadd8cab089b5a991ddfb96fcf999685da34ae78b41603aa757963fdfc4355

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

MD5
6d78bda128f8538d33da49ca3f1f8ffc

SHA1
9d86b4c5923ebf9d578412f2f0d32aee47ba4941

SHA256
ddc227fa75e792bd4b7119656d48b008a9410b7aeb572e12bda2ac0b0af42d11

SHA512
1a14b1cd6e6542441452929cf5d199e136d24839013bc530fe730c062057370d75eadd8cab089b5a991ddfb96fcf999685da34ae78b41603aa757963fdfc4355

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G1ORIWBN\dll[1].htm
Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3IV06.tmp\is-1LRKA.tmp
Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3IV06.tmp\is-1LRKA.tmp
Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-8RO1J.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{9e74baef-b191-11ed-b7c8-806e6f6e6963}\KwvH7UnIKZEkmP.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{9e74baef-b191-11ed-b7c8-806e6f6e6963}\KwvH7UnIKZEkmP.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1436-166-0x0000000000400000-0x00000000013B2000-memory.dmp

Filesize
15.7MB

Download
memory/1436-174-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1436-165-0x0000000000400000-0x00000000013B2000-memory.dmp

Filesize
15.7MB

Download
memory/1436-182-0x0000000000400000-0x00000000013B2000-memory.dmp

Filesize
15.7MB

Download
memory/1436-197-0x0000000000400000-0x00000000013B2000-memory.dmp

Filesize
15.7MB

Download
memory/2132-199-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2132-179-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2132-133-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4736-148-0x00000000005C0000-0x00000000005C1000-memory.dmp

Filesize
4KB

Download
memory/4736-198-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/4736-180-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads