gcleaner | fc79911c5cc1c4382945929bfcdea4d6400f97c66334505cf13734b112b0eac5

General

Target

89933e297e5262f0894784b003f651329b63c93483b7693c409dc6da5800291f.exe
Size

2.4MB
MD5

1f372e54cc90d16790ff3d5da8589eb1
SHA1

549adfb998e6bf227655c4f3528bd6e871598526
SHA256

89933e297e5262f0894784b003f651329b63c93483b7693c409dc6da5800291f
SHA512

12655216ab7409eae10b25330206b6f422dbbd951ae0b99ec13fcbab4def86c4da4d545f35ee8e2bd5b8ef95bb6f0f86c2ff40df33bdb79596275800675aea19
SSDEEP

49152:Z2nlzZ+Ncp4zJSh5G8i954M+GaWhUlrGzR3w9utaHNA5hq:Mnll+Nmh5U/4M+GaWhZnDq

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

45.15.156.54

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
1040	is-0JNOT.tmp
1668	dwsearcher47.exe

Loads dropped DLL 1 IoCs

pid	Process
1040	is-0JNOT.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)\dwSearcher\unins000.dat	is-0JNOT.tmp
File opened for modification	C:\Program Files (x86)\dwSearcher\dwsearcher47.exe	is-0JNOT.tmp
File created	C:\Program Files (x86)\dwSearcher\unins000.dat	is-0JNOT.tmp
File created	C:\Program Files (x86)\dwSearcher\is-QUJ9I.tmp	is-0JNOT.tmp
File created	C:\Program Files (x86)\dwSearcher\is-EMLCV.tmp	is-0JNOT.tmp
File created	C:\Program Files (x86)\dwSearcher\is-3GFHS.tmp	is-0JNOT.tmp
File created	C:\Program Files (x86)\dwSearcher\is-IO1PQ.tmp	is-0JNOT.tmp
File created	C:\Program Files (x86)\dwSearcher\is-6RSOO.tmp	is-0JNOT.tmp
File created	C:\Program Files (x86)\dwSearcher\is-T3LNU.tmp	is-0JNOT.tmp
File created	C:\Program Files (x86)\dwSearcher\is-3O392.tmp	is-0JNOT.tmp
File created	C:\Program Files (x86)\dwSearcher\is-N007O.tmp	is-0JNOT.tmp
File created	C:\Program Files (x86)\dwSearcher\is-151BO.tmp	is-0JNOT.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	89933e297e5262f0894784b003f651329b63c93483b7693c409dc6da5800291f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	is-0JNOT.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dwsearcher47.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1668	dwsearcher47.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1344 wrote to memory of 1040	1344	89933e297e5262f0894784b003f651329b63c93483b7693c409dc6da5800291f.exe	83
PID 1344 wrote to memory of 1040	1344	89933e297e5262f0894784b003f651329b63c93483b7693c409dc6da5800291f.exe	83
PID 1344 wrote to memory of 1040	1344	89933e297e5262f0894784b003f651329b63c93483b7693c409dc6da5800291f.exe	83
PID 1040 wrote to memory of 1668	1040	is-0JNOT.tmp	84
PID 1040 wrote to memory of 1668	1040	is-0JNOT.tmp	84
PID 1040 wrote to memory of 1668	1040	is-0JNOT.tmp	84

C:\Users\Admin\AppData\Local\Temp\89933e297e5262f0894784b003f651329b63c93483b7693c409dc6da5800291f.exe
"C:\Users\Admin\AppData\Local\Temp\89933e297e5262f0894784b003f651329b63c93483b7693c409dc6da5800291f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1344
- C:\Users\Admin\AppData\Local\Temp\is-U0SSM.tmp\is-0JNOT.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-U0SSM.tmp\is-0JNOT.tmp" /SL4 $701C2 "C:\Users\Admin\AppData\Local\Temp\89933e297e5262f0894784b003f651329b63c93483b7693c409dc6da5800291f.exe" 2274560 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:1040
- - C:\Program Files (x86)\dwSearcher\dwsearcher47.exe
    "C:\Program Files (x86)\dwSearcher\dwsearcher47.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    PID:1668

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:\Program Files (x86)\dwSearcher\dwsearcher47.exe

Filesize
4.0MB

MD5
d87379703c635001399e0471e9630ee2

SHA1
8140b25afcc0561724e27819f39bd5b8e5d4c4a3

SHA256
c834777013755021c0795f1689e8208b93852e2d649ec50a183482960672ed14

SHA512
62a041a0251ce3d23189b80a0fc9a9ddf0231457b2d5f54e79abd5ddae6475db9bd2c1c55eeceed2b04fbae2ac5beab5da5821c9a8a02b4a18ad99daa7e29f27

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-IFU1U.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-U0SSM.tmp\is-0JNOT.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
memory/1040-10-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/1040-43-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/1344-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1344-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1344-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1668-41-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/1668-40-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/1668-42-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/1668-46-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download

Analysis

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