gcleaner | 477b4c4a0b4a95ad547b7dcbb4285b2d11775d10a31be8a10d1d0e82f55ac40a

Analysis

max time kernel
135s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2023, 02:03

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General

Target
file.exe
Size 1.9MB
Sample230611-cgn35aha8x
SHA256 477b4c4a0b4a95ad547b7dcbb4285b2d11775d10a31be8a10d1d0e82f55ac40a
MD5 fdb1209f7a56e5a48d63a3fb1c4bd09a
SHA1 7ca49bd5c1151ab65f6b95a6b2a2eaa760f505c3
SHA512 a5112e853a2465f6901e4d7f75978cec3dbe505997227245941fac7648b70cd01a098197b9004cbec5db22dda8cfaa049427333b3a8469f7bccdb9527eb81506
SSDEEP 49152:Z6dd6sPi3Ci1bWnGm7rDo+E6eTuVf8lGF9jFxw8+TKj1g7Ir86:sdYsajshrOW0wZ+Ti1g7j6
MD5 SHA1 SHA512 SSDEEP

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

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-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	Rec610.exe

Executes dropped EXE 3 IoCs

pid	Process
3716	is-JKU90.tmp
1076	Rec610.exe
3616	K2PxRFe6V8N.exe

Loads dropped DLL 1 IoCs

pid	Process
3716	is-JKU90.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 created	C:\Program Files (x86)\FMFCover\Rec610\unins000.dat	is-JKU90.tmp
File created	C:\Program Files (x86)\FMFCover\Rec610\is-56GHG.tmp	is-JKU90.tmp
File created	C:\Program Files (x86)\FMFCover\Rec610\is-90JSO.tmp	is-JKU90.tmp
File created	C:\Program Files (x86)\FMFCover\Rec610\is-V9QFM.tmp	is-JKU90.tmp
File created	C:\Program Files (x86)\FMFCover\Rec610\data\is-M9HG2.tmp	is-JKU90.tmp
File created	C:\Program Files (x86)\FMFCover\Rec610\is-JGLI6.tmp	is-JKU90.tmp
File created	C:\Program Files (x86)\FMFCover\Rec610\is-1E9UC.tmp	is-JKU90.tmp
File opened for modification	C:\Program Files (x86)\FMFCover\Rec610\unins000.dat	is-JKU90.tmp
File opened for modification	C:\Program Files (x86)\FMFCover\Rec610\Rec610.exe	is-JKU90.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
2628	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1076	Rec610.exe
1076	Rec610.exe
1076	Rec610.exe
1076	Rec610.exe
1076	Rec610.exe
1076	Rec610.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2628	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 3716	2356	file.exe	84
PID 2356 wrote to memory of 3716	2356	file.exe	84
PID 2356 wrote to memory of 3716	2356	file.exe	84
PID 3716 wrote to memory of 1076	3716	is-JKU90.tmp	85
PID 3716 wrote to memory of 1076	3716	is-JKU90.tmp	85
PID 3716 wrote to memory of 1076	3716	is-JKU90.tmp	85
PID 1076 wrote to memory of 3616	1076	Rec610.exe	86
PID 1076 wrote to memory of 3616	1076	Rec610.exe	86
PID 1076 wrote to memory of 3616	1076	Rec610.exe	86
PID 1076 wrote to memory of 2308	1076	Rec610.exe	94
PID 1076 wrote to memory of 2308	1076	Rec610.exe	94
PID 1076 wrote to memory of 2308	1076	Rec610.exe	94
PID 2308 wrote to memory of 2628	2308	cmd.exe	96
PID 2308 wrote to memory of 2628	2308	cmd.exe	96
PID 2308 wrote to memory of 2628	2308	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:2356
- C:\Users\Admin\AppData\Local\Temp\is-4B53N.tmp\is-JKU90.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-4B53N.tmp\is-JKU90.tmp" /SL4 $B006C "C:\Users\Admin\AppData\Local\Temp\file.exe" 1726730 174592
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:3716
- - C:\Program Files (x86)\FMFCover\Rec610\Rec610.exe
    "C:\Program Files (x86)\FMFCover\Rec610\Rec610.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1076
  - - C:\Users\Admin\AppData\Roaming\{88209788-b19c-11ed-8ff5-806e6f6e6963}\K2PxRFe6V8N.exe
      4⤵
      Executes dropped EXE
      PID:3616
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "Rec610.exe" /f & erase "C:\Program Files (x86)\FMFCover\Rec610\Rec610.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2308
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "Rec610.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2628

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Rec610.exe

Path C:\Program Files (x86)\FMFCover\Rec610\Rec610.exe
Size 1.5MB
SHA256 6065713c2b0098de5c1e6063de9dea3c3dc0b658b33f750ab3da0f18e2d4e405
MD5 5d029154fe18d20ebfe50b329a935586
SHA1 39ed86cfd7a36e869504b09c0813780355c0b256
SHA512 c7bbea64ea7f0314a6fed3175f247082f029956bd798de5440fcd73b9eea436b2882a3b67934a68a92b318f8c17165c847540f48ef8e7190f0b76d8614a487e6
SSDEEP 24576:BkdRN3OZkpNOMiLR3UOesv+ZDU/c9tkfD0T5E0PIBBdY9Zyb0XTVaZ3fCE:EaE798+D3F/yBm9ZyN3
MD5 SHA1 SHA512 SSDEEP

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Rec610.exe

Path C:\Program Files (x86)\FMFCover\Rec610\Rec610.exe
Size 1.5MB
SHA256 6065713c2b0098de5c1e6063de9dea3c3dc0b658b33f750ab3da0f18e2d4e405
MD5 5d029154fe18d20ebfe50b329a935586
SHA1 39ed86cfd7a36e869504b09c0813780355c0b256
SHA512 c7bbea64ea7f0314a6fed3175f247082f029956bd798de5440fcd73b9eea436b2882a3b67934a68a92b318f8c17165c847540f48ef8e7190f0b76d8614a487e6
SSDEEP 24576:BkdRN3OZkpNOMiLR3UOesv+ZDU/c9tkfD0T5E0PIBBdY9Zyb0XTVaZ3fCE:EaE798+D3F/yBm9ZyN3
MD5 SHA1 SHA512 SSDEEP

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dll[1].htm

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\4VT6R2QM\dll[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

Submit Download

is-JKU90.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-4B53N.tmp\is-JKU90.tmp
Size 755KB
SHA256 0c8be9231a9c8d125edc1c1779ad2d0549ac27646db70e4483c672d10c6ce948
MD5 64cd57d34b0d2664fb59b56a87b3d500
SHA1 9d8a7e4f482e13e4541a1a14cfa80b9b8e24f018
SHA512 41bcd7a5055b4f81be14b4582cece0a3b5d4080b66408b6df638f81ca3324c7becadbfc846996f0f0c9b7d2ff61285aebebbaac27b6b1b4fab9cdc248dd10f82
SSDEEP 12288:9euHnWgyrgVu4rPy37WzH0A6uaF4Ad7dNsVN1qRqUD1aclP0PHxO+:cuHcrgVxrPy37WzH0A6uwpd7QN1+Ja6o
MD5 SHA1 SHA512 SSDEEP

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is-JKU90.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-4B53N.tmp\is-JKU90.tmp
Size 755KB
SHA256 0c8be9231a9c8d125edc1c1779ad2d0549ac27646db70e4483c672d10c6ce948
MD5 64cd57d34b0d2664fb59b56a87b3d500
SHA1 9d8a7e4f482e13e4541a1a14cfa80b9b8e24f018
SHA512 41bcd7a5055b4f81be14b4582cece0a3b5d4080b66408b6df638f81ca3324c7becadbfc846996f0f0c9b7d2ff61285aebebbaac27b6b1b4fab9cdc248dd10f82
SSDEEP 12288:9euHnWgyrgVu4rPy37WzH0A6uaF4Ad7dNsVN1qRqUD1aclP0PHxO+:cuHcrgVxrPy37WzH0A6uwpd7QN1+Ja6o
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-8O24T.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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K2PxRFe6V8N.exe

Path C:\Users\Admin\AppData\Roaming\{88209788-b19c-11ed-8ff5-806e6f6e6963}\K2PxRFe6V8N.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

K2PxRFe6V8N.exe

Path C:\Users\Admin\AppData\Roaming\{88209788-b19c-11ed-8ff5-806e6f6e6963}\K2PxRFe6V8N.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1076-198-0x0000000000400000-0x0000000001387000-memory.dmp

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memory/1076-166-0x0000000000400000-0x0000000001387000-memory.dmp

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memory/1076-167-0x0000000000400000-0x0000000001387000-memory.dmp

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memory/1076-175-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1076-182-0x0000000000400000-0x0000000001387000-memory.dmp

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memory/2356-179-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/2356-133-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/2356-200-0x0000000000400000-0x0000000000431000-memory.dmp

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memory/3716-181-0x0000000000400000-0x00000000004CB000-memory.dmp

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memory/3716-148-0x0000000000620000-0x0000000000621000-memory.dmp

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memory/3716-199-0x0000000000400000-0x00000000004CB000-memory.dmp

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