gcleaner | 47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf

General

Target

47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe
Size

2.3MB
MD5

a39b44970fc7fa06264aa0847966f352
SHA1

66719035f9fcf010830b24d73a0998df0f211a45
SHA256

47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf
SHA512

162cdd7fb0b1040cfa3f3ded90aeb98ea8ddec7b51bdad79c62794a5dd82782609796c1d7d3cc5828ce6ce99b02ad14f2537c88b53cefa6b0c6b36b9791d4874
SSDEEP

49152:AGNjxMcyo1CFX5x7fcVq2b+Qp30Ys6soqD+XYCqwKQOsjQ3OOKt:dNjxu+eX5x7fcVq2h3m6soq6XYBwbOsV

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

208.67.106.156

87.251.71.107

193.151.183.73

208.67.104.141

Attributes

url_path
/i.php

/get.php

/setup.php

/setup.php

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Gcleaner family
gcleaner

Executes dropped EXE 2 IoCs

pid	Process
2556	is-L30OP.tmp
2736	nsearcher.exe

Loads dropped DLL 5 IoCs

pid	Process
3056	47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe
2556	is-L30OP.tmp
2556	is-L30OP.tmp
2556	is-L30OP.tmp
2556	is-L30OP.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 12 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\boSearcher\unins000.dat	is-L30OP.tmp
File created	C:\Program Files (x86)\boSearcher\unins000.dat	is-L30OP.tmp
File created	C:\Program Files (x86)\boSearcher\is-2JTEU.tmp	is-L30OP.tmp
File created	C:\Program Files (x86)\boSearcher\is-7GD2E.tmp	is-L30OP.tmp
File created	C:\Program Files (x86)\boSearcher\is-QADBR.tmp	is-L30OP.tmp
File created	C:\Program Files (x86)\boSearcher\is-5EM0B.tmp	is-L30OP.tmp
File created	C:\Program Files (x86)\boSearcher\is-1PF4C.tmp	is-L30OP.tmp
File opened for modification	C:\Program Files (x86)\boSearcher\nsearcher.exe	is-L30OP.tmp
File created	C:\Program Files (x86)\boSearcher\is-K12JC.tmp	is-L30OP.tmp
File created	C:\Program Files (x86)\boSearcher\is-H0L13.tmp	is-L30OP.tmp
File created	C:\Program Files (x86)\boSearcher\is-O1UB6.tmp	is-L30OP.tmp
File created	C:\Program Files (x86)\boSearcher\is-1OCR6.tmp	is-L30OP.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	is-L30OP.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nsearcher.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 2556	3056	47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe	30
PID 3056 wrote to memory of 2556	3056	47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe	30
PID 3056 wrote to memory of 2556	3056	47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe	30
PID 3056 wrote to memory of 2556	3056	47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe	30
PID 3056 wrote to memory of 2556	3056	47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe	30
PID 3056 wrote to memory of 2556	3056	47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe	30
PID 3056 wrote to memory of 2556	3056	47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe	30
PID 2556 wrote to memory of 2736	2556	is-L30OP.tmp	31
PID 2556 wrote to memory of 2736	2556	is-L30OP.tmp	31
PID 2556 wrote to memory of 2736	2556	is-L30OP.tmp	31
PID 2556 wrote to memory of 2736	2556	is-L30OP.tmp	31

C:\Users\Admin\AppData\Local\Temp\47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe
"C:\Users\Admin\AppData\Local\Temp\47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Users\Admin\AppData\Local\Temp\is-3U9P5.tmp\is-L30OP.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-3U9P5.tmp\is-L30OP.tmp" /SL4 $400BE "C:\Users\Admin\AppData\Local\Temp\47b77a6c336379a17d981682c6da88d4db9fdbf9b8ce14409763fbe0579845cf.exe" 2135432 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2556
- - C:\Program Files (x86)\boSearcher\nsearcher.exe
    "C:\Program Files (x86)\boSearcher\nsearcher.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\is-3U9P5.tmp\is-L30OP.tmp

Filesize
658KB

MD5
fec7bff4c36a4303ade51e3ed704e708

SHA1
487c0f4af67e56a661b9f1d99515ff080db968c3

SHA256
0414eeff52f63cb32e508fe22c54aedb399e7a6baaab94a81081073dbe78c75f

SHA512
1267a0b954f3315b067883ff6ae8d599166ccfe35f1c7770e29f5f66a13650d4e1ae7f04c0b48e3da0875fb6c7127892f4a6ecd6214f43f6beb5013f55fe94d0

Download Submit
\Program Files (x86)\boSearcher\nsearcher.exe

Filesize
4.0MB

MD5
5b72c1516dc190ede2e41dfe6edd989e

SHA1
1f656cda67d0591afb1a78658e834716c061d4cd

SHA256
296ca9116e8bf65ce96d0a72e8f93b82610131af26b7f9ca3b1adf69cbb4738a

SHA512
29ba9fb5183c69173339784be01758bdc7d29c7243982fceaeda0b1f429ce7ca16ad8fcf6b043bd4b4b3ef85457d5f05612afdfa3b312d287e80cc4262396db0

Download Submit
\Users\Admin\AppData\Local\Temp\is-8BJI9.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-8BJI9.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/2556-19-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2556-44-0x0000000003A60000-0x0000000004C62000-memory.dmp

Filesize
18.0MB

Download
memory/2556-50-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2736-45-0x0000000000400000-0x0000000001602000-memory.dmp

Filesize
18.0MB

Download
memory/2736-46-0x0000000000400000-0x0000000001602000-memory.dmp

Filesize
18.0MB

Download
memory/2736-48-0x0000000000400000-0x0000000001602000-memory.dmp

Filesize
18.0MB

Download
memory/3056-0-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/3056-3-0x0000000000401000-0x000000000040A000-memory.dmp

Filesize
36KB

Download
memory/3056-51-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download

Analysis

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