gcleaner | 659e272606eab0f6f28688e3e6993b640261fbfe1091a3cc3a8252d30b6568ff

General

Target

b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe
Size

2.5MB
MD5

1bb4a3c2d8bd4afb972a0b107afd3ace
SHA1

7a3a4deedbe7d2e564f2d83151c5518657126d30
SHA256

b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563
SHA512

5fd499cc0aff241f0b93bd6ee88d4207846d488f11450982f76f4559b3791a33c3149b099e2935032c769dcf5580aa51f5572a03172865f73638142adcfc66cf
SSDEEP

49152:Z2sFfpB+r41Yd9JwIeyVPwxE3IJzojUYxlm0jXf0dvliA5hq:McB+rcYd3teyVPOE3I6t0d9ZDq

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

45.139.105.171

85.31.46.167

107.182.129.235

171.22.30.106

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
2948	is-FFQIO.tmp
2664	fbsearcher62.exe

Loads dropped DLL 5 IoCs

pid	Process
2824	b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe
2948	is-FFQIO.tmp
2948	is-FFQIO.tmp
2948	is-FFQIO.tmp
2948	is-FFQIO.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 created	C:\Program Files (x86)\fbSearcher\is-V47ID.tmp	is-FFQIO.tmp
File created	C:\Program Files (x86)\fbSearcher\is-A74UE.tmp	is-FFQIO.tmp
File created	C:\Program Files (x86)\fbSearcher\is-NHA6J.tmp	is-FFQIO.tmp
File created	C:\Program Files (x86)\fbSearcher\is-PF1HN.tmp	is-FFQIO.tmp
File opened for modification	C:\Program Files (x86)\fbSearcher\unins000.dat	is-FFQIO.tmp
File created	C:\Program Files (x86)\fbSearcher\unins000.dat	is-FFQIO.tmp
File created	C:\Program Files (x86)\fbSearcher\is-SJM45.tmp	is-FFQIO.tmp
File created	C:\Program Files (x86)\fbSearcher\is-HBC65.tmp	is-FFQIO.tmp
File created	C:\Program Files (x86)\fbSearcher\is-P2SV3.tmp	is-FFQIO.tmp
File created	C:\Program Files (x86)\fbSearcher\is-HNU1D.tmp	is-FFQIO.tmp
File created	C:\Program Files (x86)\fbSearcher\is-62SMJ.tmp	is-FFQIO.tmp
File opened for modification	C:\Program Files (x86)\fbSearcher\fbsearcher62.exe	is-FFQIO.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	b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	is-FFQIO.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbsearcher62.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2664	fbsearcher62.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 2948	2824	b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe	30
PID 2824 wrote to memory of 2948	2824	b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe	30
PID 2824 wrote to memory of 2948	2824	b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe	30
PID 2824 wrote to memory of 2948	2824	b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe	30
PID 2824 wrote to memory of 2948	2824	b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe	30
PID 2824 wrote to memory of 2948	2824	b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe	30
PID 2824 wrote to memory of 2948	2824	b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe	30
PID 2948 wrote to memory of 2664	2948	is-FFQIO.tmp	31
PID 2948 wrote to memory of 2664	2948	is-FFQIO.tmp	31
PID 2948 wrote to memory of 2664	2948	is-FFQIO.tmp	31
PID 2948 wrote to memory of 2664	2948	is-FFQIO.tmp	31

C:\Users\Admin\AppData\Local\Temp\b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe
"C:\Users\Admin\AppData\Local\Temp\b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2824
- C:\Users\Admin\AppData\Local\Temp\is-9NL0D.tmp\is-FFQIO.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-9NL0D.tmp\is-FFQIO.tmp" /SL4 $40150 "C:\Users\Admin\AppData\Local\Temp\b7b0dea77586bf700a6805164cebd665eefb9099e9d2181f2640a73b5190a563.exe" 2324766 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:2948
- - C:\Program Files (x86)\fbSearcher\fbsearcher62.exe
    "C:\Program Files (x86)\fbSearcher\fbsearcher62.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    PID:2664

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

\Program Files (x86)\fbSearcher\fbsearcher62.exe

Filesize
3.8MB

MD5
b84ee8e54b921db8a462d41acfec3f8f

SHA1
c0b804d3f2d9f258468f2faff1589a3ea4009a9d

SHA256
90b4b3606fabe39650b0cdeb66ee05d4fdd2b5f7d5910d6d1ad42e0d5dff8316

SHA512
62e4052a4519abdf475189af09d95bb1aa65cb4619e5670c58a478d8773b79878997c68de676c96479d81d12b350e23638f00925ff42d3adab732cfc17a68c47

Download Submit
\Users\Admin\AppData\Local\Temp\is-3G8MT.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-3G8MT.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-9NL0D.tmp\is-FFQIO.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
memory/2664-45-0x0000000000400000-0x00000000015C9000-memory.dmp

Filesize
17.8MB

Download
memory/2664-46-0x0000000000400000-0x00000000015C9000-memory.dmp

Filesize
17.8MB

Download
memory/2664-52-0x0000000000400000-0x00000000015C9000-memory.dmp

Filesize
17.8MB

Download
memory/2824-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2824-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2824-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2948-17-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2948-44-0x0000000003A50000-0x0000000004C19000-memory.dmp

Filesize
17.8MB

Download
memory/2948-47-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2948-48-0x0000000003A50000-0x0000000004C19000-memory.dmp

Filesize
17.8MB

Download

Analysis

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