gcleaner | 4ed3bfa20dcd4364b62d0510482e02497756a6649625b6a00368d3122c34a1cc

General

Target

file.exe
Size

1.7MB
MD5

44451ae83340e8ca52662ed93b0abd90
SHA1

c6b148b63a6a75775d23bd872dc978280a6c67ef
SHA256

4ed3bfa20dcd4364b62d0510482e02497756a6649625b6a00368d3122c34a1cc
SHA512

669940a1b7572ee262e797d561ffbf824130cce22429d76b611295629ac69a139749de9d13180d9de77252d4505ae0146817524772e5661b3c14629eade98c03
SSDEEP

49152:EGlJfshca8xQmL0VuziTgScdaOn8v5dlLYp:5SoqVRgScd7nOPYp

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:

FRec329.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation FRec329.exe
Executes dropped EXE 3 IoCs

Processes:

is-I8JCJ.tmpFRec329.exeE1uEhl.exe

pid process

4476 is-I8JCJ.tmp
4432 FRec329.exe
4688 E1uEhl.exe
Loads dropped DLL 1 IoCs

Processes:

is-I8JCJ.tmp

pid process

4476 is-I8JCJ.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	FRec329.exe

pid	process
4476	is-I8JCJ.tmp
4432	FRec329.exe
4688	E1uEhl.exe

pid	process
4476	is-I8JCJ.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-I8JCJ.tmp

description	ioc	process
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\is-OCVJU.tmp	is-I8JCJ.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\is-QGFF6.tmp	is-I8JCJ.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\unins000.dat	is-I8JCJ.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\is-RI0RL.tmp	is-I8JCJ.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\is-RHJGV.tmp	is-I8JCJ.tmp
File opened for modification	C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe	is-I8JCJ.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\is-5C9UO.tmp	is-I8JCJ.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\data\is-SRODJ.tmp	is-I8JCJ.tmp
File opened for modification	C:\Program Files (x86)\FJIsoftFR\FRec329\unins000.dat	is-I8JCJ.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

2032 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

FRec329.exe

pid process

4432 FRec329.exe
4432 FRec329.exe
4432 FRec329.exe
4432 FRec329.exe
4432 FRec329.exe
4432 FRec329.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2032 taskkill.exe

pid	process
2032	taskkill.exe

pid	process
4432	FRec329.exe
4432	FRec329.exe
4432	FRec329.exe
4432	FRec329.exe
4432	FRec329.exe
4432	FRec329.exe

description	pid	process
Token: SeDebugPrivilege	2032	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-I8JCJ.tmpFRec329.execmd.exe

description	pid	process	target process
PID 828 wrote to memory of 4476	828	file.exe	is-I8JCJ.tmp
PID 828 wrote to memory of 4476	828	file.exe	is-I8JCJ.tmp
PID 828 wrote to memory of 4476	828	file.exe	is-I8JCJ.tmp
PID 4476 wrote to memory of 4432	4476	is-I8JCJ.tmp	FRec329.exe
PID 4476 wrote to memory of 4432	4476	is-I8JCJ.tmp	FRec329.exe
PID 4476 wrote to memory of 4432	4476	is-I8JCJ.tmp	FRec329.exe
PID 4432 wrote to memory of 4688	4432	FRec329.exe	E1uEhl.exe
PID 4432 wrote to memory of 4688	4432	FRec329.exe	E1uEhl.exe
PID 4432 wrote to memory of 4688	4432	FRec329.exe	E1uEhl.exe
PID 4432 wrote to memory of 2672	4432	FRec329.exe	cmd.exe
PID 4432 wrote to memory of 2672	4432	FRec329.exe	cmd.exe
PID 4432 wrote to memory of 2672	4432	FRec329.exe	cmd.exe
PID 2672 wrote to memory of 2032	2672	cmd.exe	taskkill.exe
PID 2672 wrote to memory of 2032	2672	cmd.exe	taskkill.exe
PID 2672 wrote to memory of 2032	2672	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:828

C:\Users\Admin\AppData\Local\Temp\is-47UH9.tmp\is-I8JCJ.tmp
"C:\Users\Admin\AppData\Local\Temp\is-47UH9.tmp\is-I8JCJ.tmp" /SL4 $501C0 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1589499 52736
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4476

C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe
"C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe"
3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4432

C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\E1uEhl.exe
4⤵
- Executes dropped EXE
PID:4688

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "FRec329.exe" /f & erase "C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:2672

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "FRec329.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2032

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)\FJIsoftFR\FRec329\FRec329.exe
Filesize
1.5MB

MD5
beb55b44711d3818154964b5005b8b5e

SHA1
84de148e39d135b172da709fe6232115ac52818c

SHA256
6385f23365d7873a60b1fcd560e0da3e3e8de0c8b1acf30c2769fc758e3122b4

SHA512
34005ef252d38749142c74bf021c4b11e861827cdf268a1cb4f6134e4bf07fedfc89f30f95b6bce14ea998eec1646cec6cc4dd8f79f4622f096aef78e6217a97

Download Submit
C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe
Filesize
1.5MB

MD5
beb55b44711d3818154964b5005b8b5e

SHA1
84de148e39d135b172da709fe6232115ac52818c

SHA256
6385f23365d7873a60b1fcd560e0da3e3e8de0c8b1acf30c2769fc758e3122b4

SHA512
34005ef252d38749142c74bf021c4b11e861827cdf268a1cb4f6134e4bf07fedfc89f30f95b6bce14ea998eec1646cec6cc4dd8f79f4622f096aef78e6217a97

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-47UH9.tmp\is-I8JCJ.tmp
Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-47UH9.tmp\is-I8JCJ.tmp
Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-AVV31.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}\E1uEhl.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\E1uEhl.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/828-199-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/828-179-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/828-133-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4432-165-0x0000000000400000-0x0000000001380000-memory.dmp

Filesize
15.5MB

Download
memory/4432-174-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4432-166-0x0000000000400000-0x0000000001380000-memory.dmp

Filesize
15.5MB

Download
memory/4432-182-0x0000000000400000-0x0000000001380000-memory.dmp

Filesize
15.5MB

Download
memory/4432-197-0x0000000000400000-0x0000000001380000-memory.dmp

Filesize
15.5MB

Download
memory/4476-148-0x0000000000670000-0x0000000000671000-memory.dmp

Filesize
4KB

Download
memory/4476-198-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/4476-180-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download

Analysis

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