gcleaner | 7848d4e5adc7034e32b63d9d09414f770117f12cd1f0cd2a4643b0d5e58207d1

Analysis

max time kernel
60s
max time network
63s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
12-04-2023 17:56

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General

Target

file.exe
Size

2.7MB
MD5

4b8ea5598f2b38f21b81fa2067306302
SHA1

1113bcc3abc625724757fd1368d03a50af9138a4
SHA256

7848d4e5adc7034e32b63d9d09414f770117f12cd1f0cd2a4643b0d5e58207d1
SHA512

76c973a312894327341d0a44014227f4ea1dfced2ec903cf934a2057ca9f701e83098bf587bf45919de3253fbfb770457022f35909b9941bf61fc0ba36eed8d4
SSDEEP

49152:zGlJfsUp6qqY4/9Zf2YkBnGZlIacuzaH7pslSnCb+ZPYEA8A01iIodPCD0B2V+la:qvRqY4/9ZLqn62tbSeASAiAeoO00VCgL

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

Processes:

is-GT1BV.tmpRec412.exev3UmJ.exe

pid process

2040 is-GT1BV.tmp
1444 Rec412.exe
364 v3UmJ.exe
Loads dropped DLL 7 IoCs

Processes:

file.exeis-GT1BV.tmpRec412.exe

pid process

1108 file.exe
2040 is-GT1BV.tmp
2040 is-GT1BV.tmp
2040 is-GT1BV.tmp
2040 is-GT1BV.tmp
2040 is-GT1BV.tmp
1444 Rec412.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

pid	process
2040	is-GT1BV.tmp
1444	Rec412.exe
364	v3UmJ.exe

pid	process
1108	file.exe
2040	is-GT1BV.tmp
2040	is-GT1BV.tmp
2040	is-GT1BV.tmp
2040	is-GT1BV.tmp
2040	is-GT1BV.tmp
1444	Rec412.exe

Drops file in Program Files directory 9 IoCs

Processes:

is-GT1BV.tmp

description	ioc	process
File created	C:\Program Files (x86)\FJWsoftFR\Rec412\unins000.dat	is-GT1BV.tmp
File created	C:\Program Files (x86)\FJWsoftFR\Rec412\is-7I8TA.tmp	is-GT1BV.tmp
File created	C:\Program Files (x86)\FJWsoftFR\Rec412\is-JQA8I.tmp	is-GT1BV.tmp
File created	C:\Program Files (x86)\FJWsoftFR\Rec412\is-7EAKU.tmp	is-GT1BV.tmp
File created	C:\Program Files (x86)\FJWsoftFR\Rec412\data\is-A2767.tmp	is-GT1BV.tmp
File created	C:\Program Files (x86)\FJWsoftFR\Rec412\is-S219A.tmp	is-GT1BV.tmp
File created	C:\Program Files (x86)\FJWsoftFR\Rec412\is-1FM43.tmp	is-GT1BV.tmp
File opened for modification	C:\Program Files (x86)\FJWsoftFR\Rec412\unins000.dat	is-GT1BV.tmp
File opened for modification	C:\Program Files (x86)\FJWsoftFR\Rec412\Rec412.exe	is-GT1BV.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

1344 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Rec412.exe

pid process

1444 Rec412.exe
1444 Rec412.exe
1444 Rec412.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1344 taskkill.exe

pid	process
1344	taskkill.exe

pid	process
1444	Rec412.exe
1444	Rec412.exe
1444	Rec412.exe

description	pid	process
Token: SeDebugPrivilege	1344	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exeis-GT1BV.tmpRec412.execmd.exe

description	pid	process	target process
PID 1108 wrote to memory of 2040	1108	file.exe	is-GT1BV.tmp
PID 1108 wrote to memory of 2040	1108	file.exe	is-GT1BV.tmp
PID 1108 wrote to memory of 2040	1108	file.exe	is-GT1BV.tmp
PID 1108 wrote to memory of 2040	1108	file.exe	is-GT1BV.tmp
PID 1108 wrote to memory of 2040	1108	file.exe	is-GT1BV.tmp
PID 1108 wrote to memory of 2040	1108	file.exe	is-GT1BV.tmp
PID 1108 wrote to memory of 2040	1108	file.exe	is-GT1BV.tmp
PID 2040 wrote to memory of 1444	2040	is-GT1BV.tmp	Rec412.exe
PID 2040 wrote to memory of 1444	2040	is-GT1BV.tmp	Rec412.exe
PID 2040 wrote to memory of 1444	2040	is-GT1BV.tmp	Rec412.exe
PID 2040 wrote to memory of 1444	2040	is-GT1BV.tmp	Rec412.exe
PID 1444 wrote to memory of 364	1444	Rec412.exe	v3UmJ.exe
PID 1444 wrote to memory of 364	1444	Rec412.exe	v3UmJ.exe
PID 1444 wrote to memory of 364	1444	Rec412.exe	v3UmJ.exe
PID 1444 wrote to memory of 364	1444	Rec412.exe	v3UmJ.exe
PID 1444 wrote to memory of 432	1444	Rec412.exe	cmd.exe
PID 1444 wrote to memory of 432	1444	Rec412.exe	cmd.exe
PID 1444 wrote to memory of 432	1444	Rec412.exe	cmd.exe
PID 1444 wrote to memory of 432	1444	Rec412.exe	cmd.exe
PID 432 wrote to memory of 1344	432	cmd.exe	taskkill.exe
PID 432 wrote to memory of 1344	432	cmd.exe	taskkill.exe
PID 432 wrote to memory of 1344	432	cmd.exe	taskkill.exe
PID 432 wrote to memory of 1344	432	cmd.exe	taskkill.exe

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:1108

C:\Users\Admin\AppData\Local\Temp\is-6LTKL.tmp\is-GT1BV.tmp
"C:\Users\Admin\AppData\Local\Temp\is-6LTKL.tmp\is-GT1BV.tmp" /SL4 $80022 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2634247 56320
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2040

C:\Program Files (x86)\FJWsoftFR\Rec412\Rec412.exe
"C:\Program Files (x86)\FJWsoftFR\Rec412\Rec412.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1444

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\v3UmJ.exe
4⤵
- Executes dropped EXE
PID:364

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "Rec412.exe" /f & erase "C:\Program Files (x86)\FJWsoftFR\Rec412\Rec412.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:432

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "Rec412.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1344

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\FJWsoftFR\Rec412\Rec412.exe
Filesize
3.0MB

MD5
a54cc0da4884f08f04ce09b859869c2f

SHA1
cb679a4039a341b2ab763c2c2c25abd39b432668

SHA256
bcc5e091b89290e398fe59a51bed1ecb8f33dcb94292f2bd1e9ba20ba393eb6f

SHA512
0b5af4acc2499b41d06c43c037e660fad4748507ed38280f8a5a5433f187acda6f237ff8d89b10aed48fa6a4e34ea0261c561b2a9cade5db95539fc82fdec23a

Download Submit
C:\Program Files (x86)\FJWsoftFR\Rec412\Rec412.exe
Filesize
3.0MB

MD5
a54cc0da4884f08f04ce09b859869c2f

SHA1
cb679a4039a341b2ab763c2c2c25abd39b432668

SHA256
bcc5e091b89290e398fe59a51bed1ecb8f33dcb94292f2bd1e9ba20ba393eb6f

SHA512
0b5af4acc2499b41d06c43c037e660fad4748507ed38280f8a5a5433f187acda6f237ff8d89b10aed48fa6a4e34ea0261c561b2a9cade5db95539fc82fdec23a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\VQ77JNZF\dll[2].htm
Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6LTKL.tmp\is-GT1BV.tmp
Filesize
659KB

MD5
57d101722b08967ce53be6109b7f6ccf

SHA1
f62e5f39efbfb03d0ddd822963122eb1945d9f18

SHA256
5b433440454647dc2775cacf3258f2272cb2fc0ec870b862744aad4ee7bc7ec9

SHA512
57158b946d08d669967f8b09dde8a44a1e2c94ac0a313aa6f3eb52c651c73e7546b085a201847757ac15911d797a8fb2032a13e845b790af5279abd344793f4b

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6LTKL.tmp\is-GT1BV.tmp
Filesize
659KB

MD5
57d101722b08967ce53be6109b7f6ccf

SHA1
f62e5f39efbfb03d0ddd822963122eb1945d9f18

SHA256
5b433440454647dc2775cacf3258f2272cb2fc0ec870b862744aad4ee7bc7ec9

SHA512
57158b946d08d669967f8b09dde8a44a1e2c94ac0a313aa6f3eb52c651c73e7546b085a201847757ac15911d797a8fb2032a13e845b790af5279abd344793f4b

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\v3UmJ.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\FJWsoftFR\Rec412\Rec412.exe
Filesize
3.0MB

MD5
a54cc0da4884f08f04ce09b859869c2f

SHA1
cb679a4039a341b2ab763c2c2c25abd39b432668

SHA256
bcc5e091b89290e398fe59a51bed1ecb8f33dcb94292f2bd1e9ba20ba393eb6f

SHA512
0b5af4acc2499b41d06c43c037e660fad4748507ed38280f8a5a5433f187acda6f237ff8d89b10aed48fa6a4e34ea0261c561b2a9cade5db95539fc82fdec23a

Download Submit
\Users\Admin\AppData\Local\Temp\is-6LTKL.tmp\is-GT1BV.tmp
Filesize
659KB

MD5
57d101722b08967ce53be6109b7f6ccf

SHA1
f62e5f39efbfb03d0ddd822963122eb1945d9f18

SHA256
5b433440454647dc2775cacf3258f2272cb2fc0ec870b862744aad4ee7bc7ec9

SHA512
57158b946d08d669967f8b09dde8a44a1e2c94ac0a313aa6f3eb52c651c73e7546b085a201847757ac15911d797a8fb2032a13e845b790af5279abd344793f4b

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

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-QUOPP.tmp\_isetup\_isdecmp.dll
Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

Download Submit
\Users\Admin\AppData\Local\Temp\is-QUOPP.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-QUOPP.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\v3UmJ.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1108-102-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1108-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1108-138-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1444-108-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1444-104-0x0000000000400000-0x00000000014FF000-memory.dmp

Filesize
17.0MB

Download
memory/1444-96-0x0000000000400000-0x00000000014FF000-memory.dmp

Filesize
17.0MB

Download
memory/1444-113-0x0000000000400000-0x00000000014FF000-memory.dmp

Filesize
17.0MB

Download
memory/1444-117-0x0000000000400000-0x00000000014FF000-memory.dmp

Filesize
17.0MB

Download
memory/1444-136-0x0000000000400000-0x00000000014FF000-memory.dmp

Filesize
17.0MB

Download
memory/1444-95-0x0000000000400000-0x00000000014FF000-memory.dmp

Filesize
17.0MB

Download
memory/2040-103-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2040-112-0x0000000003040000-0x000000000413F000-memory.dmp

Filesize
17.0MB

Download
memory/2040-94-0x0000000003040000-0x000000000413F000-memory.dmp

Filesize
17.0MB

Download
memory/2040-137-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2040-87-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download