gcleaner | 7b4daf50ce63113ae3c210306e044965265e4774b639539968978ccdcaa992c5

General

Target

file.exe
Size

2.3MB
MD5

7000dac85e332203e473185260382422
SHA1

42eef4507c91ed483f4f56525675144081cf5833
SHA256

7b4daf50ce63113ae3c210306e044965265e4774b639539968978ccdcaa992c5
SHA512

332fe6778cc09ead5494a2a69915700ef85b4749e85b9d232d92257c7ced2f803e16ba258349ff63596725b66be99e9b75d4ad378656afd06ef1a572529b7a5e
SSDEEP

49152:J6dJ6sPXX6LzkZ/hrUfw0dXU/xLT5ZjC75+uWXhwDBONEVbn3s1g7Ir86:cdMsf8E/hADdXC5Q75UXhwDBO83s1g7O

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	Rec611.exe

Executes dropped EXE 3 IoCs

pid	Process
1164	is-SEG20.tmp
3620	Rec611.exe
4192	kl5gmkkUQX.exe

Loads dropped DLL 1 IoCs

pid	Process
1164	is-SEG20.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 9 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\FMGCover\Rec611\Rec611.exe	is-SEG20.tmp
File created	C:\Program Files (x86)\FMGCover\Rec611\is-M8VR3.tmp	is-SEG20.tmp
File created	C:\Program Files (x86)\FMGCover\Rec611\is-UR4RF.tmp	is-SEG20.tmp
File created	C:\Program Files (x86)\FMGCover\Rec611\data\is-IHCGE.tmp	is-SEG20.tmp
File opened for modification	C:\Program Files (x86)\FMGCover\Rec611\unins000.dat	is-SEG20.tmp
File created	C:\Program Files (x86)\FMGCover\Rec611\unins000.dat	is-SEG20.tmp
File created	C:\Program Files (x86)\FMGCover\Rec611\is-GUG91.tmp	is-SEG20.tmp
File created	C:\Program Files (x86)\FMGCover\Rec611\is-KDBLJ.tmp	is-SEG20.tmp
File created	C:\Program Files (x86)\FMGCover\Rec611\is-910V3.tmp	is-SEG20.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
3084	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3620	Rec611.exe
3620	Rec611.exe
3620	Rec611.exe
3620	Rec611.exe
3620	Rec611.exe
3620	Rec611.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3084	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3260 wrote to memory of 1164	3260	file.exe	84
PID 3260 wrote to memory of 1164	3260	file.exe	84
PID 3260 wrote to memory of 1164	3260	file.exe	84
PID 1164 wrote to memory of 3620	1164	is-SEG20.tmp	85
PID 1164 wrote to memory of 3620	1164	is-SEG20.tmp	85
PID 1164 wrote to memory of 3620	1164	is-SEG20.tmp	85
PID 3620 wrote to memory of 4192	3620	Rec611.exe	86
PID 3620 wrote to memory of 4192	3620	Rec611.exe	86
PID 3620 wrote to memory of 4192	3620	Rec611.exe	86
PID 3620 wrote to memory of 1704	3620	Rec611.exe	94
PID 3620 wrote to memory of 1704	3620	Rec611.exe	94
PID 3620 wrote to memory of 1704	3620	Rec611.exe	94
PID 1704 wrote to memory of 3084	1704	cmd.exe	96
PID 1704 wrote to memory of 3084	1704	cmd.exe	96
PID 1704 wrote to memory of 3084	1704	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3260
- C:\Users\Admin\AppData\Local\Temp\is-B4DR0.tmp\is-SEG20.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-B4DR0.tmp\is-SEG20.tmp" /SL4 $601C8 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2118055 175104
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1164
- - C:\Program Files (x86)\FMGCover\Rec611\Rec611.exe
    "C:\Program Files (x86)\FMGCover\Rec611\Rec611.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3620
  - - C:\Users\Admin\AppData\Roaming\{5cebde14-b1a3-11ed-bd92-806e6f6e6963}\kl5gmkkUQX.exe
      4⤵
      Executes dropped EXE
      PID:4192
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "Rec611.exe" /f & erase "C:\Program Files (x86)\FMGCover\Rec611\Rec611.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1704
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "Rec611.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3084

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\FMGCover\Rec611\Rec611.exe

Filesize
2.3MB

MD5
6e9ebbffacabd70c81af6e4ef70f408d

SHA1
a02c1af5dd65da236cec0afa3b4b33ad99d97fe1

SHA256
d8cf6782df8aeb1763d5fbeef3abb6d62c994f9dd703c19b533ee959f4ced150

SHA512
cbab4b9c69d8eb6f4fbb78070aca4fffd79e832766b3b6b88fddacc7f8e6bcdf5f58cb09d1ec826a70c9dd1c9531de25d294cb8262722e5b0d0132d31778a63d

Download Submit
C:\Program Files (x86)\FMGCover\Rec611\Rec611.exe

Filesize
2.3MB

MD5
6e9ebbffacabd70c81af6e4ef70f408d

SHA1
a02c1af5dd65da236cec0afa3b4b33ad99d97fe1

SHA256
d8cf6782df8aeb1763d5fbeef3abb6d62c994f9dd703c19b533ee959f4ced150

SHA512
cbab4b9c69d8eb6f4fbb78070aca4fffd79e832766b3b6b88fddacc7f8e6bcdf5f58cb09d1ec826a70c9dd1c9531de25d294cb8262722e5b0d0132d31778a63d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\V6GB5GU8\dll[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-38O99.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-B4DR0.tmp\is-SEG20.tmp

Filesize
755KB

MD5
64cd57d34b0d2664fb59b56a87b3d500

SHA1
9d8a7e4f482e13e4541a1a14cfa80b9b8e24f018

SHA256
0c8be9231a9c8d125edc1c1779ad2d0549ac27646db70e4483c672d10c6ce948

SHA512
41bcd7a5055b4f81be14b4582cece0a3b5d4080b66408b6df638f81ca3324c7becadbfc846996f0f0c9b7d2ff61285aebebbaac27b6b1b4fab9cdc248dd10f82

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-B4DR0.tmp\is-SEG20.tmp

Filesize
755KB

MD5
64cd57d34b0d2664fb59b56a87b3d500

SHA1
9d8a7e4f482e13e4541a1a14cfa80b9b8e24f018

SHA256
0c8be9231a9c8d125edc1c1779ad2d0549ac27646db70e4483c672d10c6ce948

SHA512
41bcd7a5055b4f81be14b4582cece0a3b5d4080b66408b6df638f81ca3324c7becadbfc846996f0f0c9b7d2ff61285aebebbaac27b6b1b4fab9cdc248dd10f82

Download Submit
C:\Users\Admin\AppData\Roaming\{5cebde14-b1a3-11ed-bd92-806e6f6e6963}\kl5gmkkUQX.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{5cebde14-b1a3-11ed-bd92-806e6f6e6963}\kl5gmkkUQX.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1164-148-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/1164-169-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download
memory/1164-201-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download
memory/3260-168-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3260-133-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3260-202-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3620-167-0x0000000000400000-0x0000000001453000-memory.dmp

Filesize
16.3MB

Download
memory/3620-166-0x0000000000400000-0x0000000001453000-memory.dmp

Filesize
16.3MB

Download
memory/3620-177-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3620-181-0x0000000000400000-0x0000000001453000-memory.dmp

Filesize
16.3MB

Download
memory/3620-200-0x0000000000400000-0x0000000001453000-memory.dmp

Filesize
16.3MB

Download

Analysis

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