gcleaner | e947dc253126cf633b04b39540199b9d2d4f1f7b85d0a1813f540cff38b29fd3

Analysis

max time kernel
67s
max time network
68s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
23/05/2023, 02:00

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General

Target

a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe
Size

1.9MB
MD5

d9b442cabce72277960feb67274888ed
SHA1

0f7e6f5037220beb250a877418d961f3a7478d3f
SHA256

a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128
SHA512

14808965f244a0021dcfdb9ba6051663ad97605ede2e864024abf41d98c845d2c9efb2cba66c86eda550ff92f08a2d12e87a613de081f4879ffe7f359838caf7
SSDEEP

49152:BiJNH3tOiDthEeHjSK7dbx7sOemuQO7bTLe7SN6CVs8wuP:BiJmOhEeDljXO7b/x6CCy

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

Executes dropped EXE 3 IoCs

pid	Process
1280	is-S3LT4.tmp
832	Rec521.exe
668	8WLvKd1JX9.exe

Loads dropped DLL 10 IoCs

pid	Process
2036	a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe
1280	is-S3LT4.tmp
1280	is-S3LT4.tmp
1280	is-S3LT4.tmp
1280	is-S3LT4.tmp
832	Rec521.exe
832	Rec521.exe
832	Rec521.exe
668	8WLvKd1JX9.exe
668	8WLvKd1JX9.exe

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)\FLLCover\Rec521\is-8JVAU.tmp	is-S3LT4.tmp
File created	C:\Program Files (x86)\FLLCover\Rec521\is-03P5K.tmp	is-S3LT4.tmp
File created	C:\Program Files (x86)\FLLCover\Rec521\is-61GF9.tmp	is-S3LT4.tmp
File created	C:\Program Files (x86)\FLLCover\Rec521\data\is-KBRKS.tmp	is-S3LT4.tmp
File opened for modification	C:\Program Files (x86)\FLLCover\Rec521\unins000.dat	is-S3LT4.tmp
File opened for modification	C:\Program Files (x86)\FLLCover\Rec521\Rec521.exe	is-S3LT4.tmp
File created	C:\Program Files (x86)\FLLCover\Rec521\unins000.dat	is-S3LT4.tmp
File created	C:\Program Files (x86)\FLLCover\Rec521\is-OTRCV.tmp	is-S3LT4.tmp
File created	C:\Program Files (x86)\FLLCover\Rec521\is-Q58Q8.tmp	is-S3LT4.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
1296	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
832	Rec521.exe
832	Rec521.exe
832	Rec521.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1296	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 1280	2036	a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe	28
PID 2036 wrote to memory of 1280	2036	a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe	28
PID 2036 wrote to memory of 1280	2036	a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe	28
PID 2036 wrote to memory of 1280	2036	a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe	28
PID 2036 wrote to memory of 1280	2036	a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe	28
PID 2036 wrote to memory of 1280	2036	a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe	28
PID 2036 wrote to memory of 1280	2036	a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe	28
PID 1280 wrote to memory of 832	1280	is-S3LT4.tmp	29
PID 1280 wrote to memory of 832	1280	is-S3LT4.tmp	29
PID 1280 wrote to memory of 832	1280	is-S3LT4.tmp	29
PID 1280 wrote to memory of 832	1280	is-S3LT4.tmp	29
PID 1280 wrote to memory of 832	1280	is-S3LT4.tmp	29
PID 1280 wrote to memory of 832	1280	is-S3LT4.tmp	29
PID 1280 wrote to memory of 832	1280	is-S3LT4.tmp	29
PID 832 wrote to memory of 668	832	Rec521.exe	30
PID 832 wrote to memory of 668	832	Rec521.exe	30
PID 832 wrote to memory of 668	832	Rec521.exe	30
PID 832 wrote to memory of 668	832	Rec521.exe	30
PID 832 wrote to memory of 668	832	Rec521.exe	30
PID 832 wrote to memory of 668	832	Rec521.exe	30
PID 832 wrote to memory of 668	832	Rec521.exe	30
PID 832 wrote to memory of 1180	832	Rec521.exe	33
PID 832 wrote to memory of 1180	832	Rec521.exe	33
PID 832 wrote to memory of 1180	832	Rec521.exe	33
PID 832 wrote to memory of 1180	832	Rec521.exe	33
PID 832 wrote to memory of 1180	832	Rec521.exe	33
PID 832 wrote to memory of 1180	832	Rec521.exe	33
PID 832 wrote to memory of 1180	832	Rec521.exe	33
PID 1180 wrote to memory of 1296	1180	cmd.exe	35
PID 1180 wrote to memory of 1296	1180	cmd.exe	35
PID 1180 wrote to memory of 1296	1180	cmd.exe	35
PID 1180 wrote to memory of 1296	1180	cmd.exe	35
PID 1180 wrote to memory of 1296	1180	cmd.exe	35
PID 1180 wrote to memory of 1296	1180	cmd.exe	35
PID 1180 wrote to memory of 1296	1180	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe
"C:\Users\Admin\AppData\Local\Temp\a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Local\Temp\is-I6276.tmp\is-S3LT4.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-I6276.tmp\is-S3LT4.tmp" /SL4 $70120 "C:\Users\Admin\AppData\Local\Temp\a1ca328c99d46f70495e5cb5d2072abfc1dfe685d1d3f3486fdb23b404b3e128.exe" 1747156 52224
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Program Files (x86)\FLLCover\Rec521\Rec521.exe
    "C:\Program Files (x86)\FLLCover\Rec521\Rec521.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:832
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\8WLvKd1JX9.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:668
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "Rec521.exe" /f & erase "C:\Program Files (x86)\FLLCover\Rec521\Rec521.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1180
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "Rec521.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1296

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

C:\Program Files (x86)\FLLCover\Rec521\Rec521.exe

Filesize
2.2MB

MD5
ec7b8a78d33ab99d75edbbf562d1a98e

SHA1
5b88701fa837bb2af9863261183339c7b09ab7b5

SHA256
ad69792343d07866999502bbeac88724487801fa986b538b8ef83642f73ddd90

SHA512
4e01c0d146264c0a5412d38b0bf2e5e68b34808d550ffdef6ecead64df1334392fc015fe2f082019f836fbcf6d151c153a510d8fcd704520170437ae806b99cf

Download Submit
C:\Program Files (x86)\FLLCover\Rec521\Rec521.exe

Filesize
2.2MB

MD5
ec7b8a78d33ab99d75edbbf562d1a98e

SHA1
5b88701fa837bb2af9863261183339c7b09ab7b5

SHA256
ad69792343d07866999502bbeac88724487801fa986b538b8ef83642f73ddd90

SHA512
4e01c0d146264c0a5412d38b0bf2e5e68b34808d550ffdef6ecead64df1334392fc015fe2f082019f836fbcf6d151c153a510d8fcd704520170437ae806b99cf

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ACT9UUKV\dll[2].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-I6276.tmp\is-S3LT4.tmp

Filesize
644KB

MD5
1f2bc482c99f55a713cf6ca3c1ff04f8

SHA1
852bacef61b885aa31afc7f615de6c6af0f715f4

SHA256
0a0d0b1916549cf997e2110a768d5bd088f5d1390960c22cb9609fe722779dcf

SHA512
a0ece5740fadbdb08f8a9efdb5e72b56198cfb35981835e03dafd2ad09d61bc592e602887d7cf65c58fc19b26caea653c1b5e5d4f35a85ebdc784300aa6948e9

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-I6276.tmp\is-S3LT4.tmp

Filesize
644KB

MD5
1f2bc482c99f55a713cf6ca3c1ff04f8

SHA1
852bacef61b885aa31afc7f615de6c6af0f715f4

SHA256
0a0d0b1916549cf997e2110a768d5bd088f5d1390960c22cb9609fe722779dcf

SHA512
a0ece5740fadbdb08f8a9efdb5e72b56198cfb35981835e03dafd2ad09d61bc592e602887d7cf65c58fc19b26caea653c1b5e5d4f35a85ebdc784300aa6948e9

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\8WLvKd1JX9.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\8WLvKd1JX9.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\FLLCover\Rec521\Rec521.exe

Filesize
2.2MB

MD5
ec7b8a78d33ab99d75edbbf562d1a98e

SHA1
5b88701fa837bb2af9863261183339c7b09ab7b5

SHA256
ad69792343d07866999502bbeac88724487801fa986b538b8ef83642f73ddd90

SHA512
4e01c0d146264c0a5412d38b0bf2e5e68b34808d550ffdef6ecead64df1334392fc015fe2f082019f836fbcf6d151c153a510d8fcd704520170437ae806b99cf

Download Submit
\Program Files (x86)\FLLCover\Rec521\Rec521.exe

Filesize
2.2MB

MD5
ec7b8a78d33ab99d75edbbf562d1a98e

SHA1
5b88701fa837bb2af9863261183339c7b09ab7b5

SHA256
ad69792343d07866999502bbeac88724487801fa986b538b8ef83642f73ddd90

SHA512
4e01c0d146264c0a5412d38b0bf2e5e68b34808d550ffdef6ecead64df1334392fc015fe2f082019f836fbcf6d151c153a510d8fcd704520170437ae806b99cf

Download Submit
\Program Files (x86)\FLLCover\Rec521\Rec521.exe

Filesize
2.2MB

MD5
ec7b8a78d33ab99d75edbbf562d1a98e

SHA1
5b88701fa837bb2af9863261183339c7b09ab7b5

SHA256
ad69792343d07866999502bbeac88724487801fa986b538b8ef83642f73ddd90

SHA512
4e01c0d146264c0a5412d38b0bf2e5e68b34808d550ffdef6ecead64df1334392fc015fe2f082019f836fbcf6d151c153a510d8fcd704520170437ae806b99cf

Download Submit
\Users\Admin\AppData\Local\Temp\is-I6276.tmp\is-S3LT4.tmp

Filesize
644KB

MD5
1f2bc482c99f55a713cf6ca3c1ff04f8

SHA1
852bacef61b885aa31afc7f615de6c6af0f715f4

SHA256
0a0d0b1916549cf997e2110a768d5bd088f5d1390960c22cb9609fe722779dcf

SHA512
a0ece5740fadbdb08f8a9efdb5e72b56198cfb35981835e03dafd2ad09d61bc592e602887d7cf65c58fc19b26caea653c1b5e5d4f35a85ebdc784300aa6948e9

Download Submit
\Users\Admin\AppData\Local\Temp\is-VDVII.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\8WLvKd1JX9.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\8WLvKd1JX9.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\8WLvKd1JX9.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/832-96-0x0000000000400000-0x000000000142A000-memory.dmp

Filesize
16.2MB

Download
memory/832-98-0x0000000001C30000-0x0000000002C5A000-memory.dmp

Filesize
16.2MB

Download
memory/832-99-0x0000000000400000-0x000000000142A000-memory.dmp

Filesize
16.2MB

Download
memory/832-115-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/832-97-0x0000000001C30000-0x0000000002C5A000-memory.dmp

Filesize
16.2MB

Download
memory/832-109-0x0000000000400000-0x000000000142A000-memory.dmp

Filesize
16.2MB

Download
memory/832-120-0x0000000000400000-0x000000000142A000-memory.dmp

Filesize
16.2MB

Download
memory/832-121-0x0000000001C30000-0x0000000002C5A000-memory.dmp

Filesize
16.2MB

Download
memory/832-144-0x0000000000400000-0x000000000142A000-memory.dmp

Filesize
16.2MB

Download
memory/1280-94-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download
memory/1280-100-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/1280-119-0x0000000004CF0000-0x0000000005D1A000-memory.dmp

Filesize
16.2MB

Download
memory/1280-95-0x0000000004CF0000-0x0000000005D1A000-memory.dmp

Filesize
16.2MB

Download
memory/1280-71-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/1280-145-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download
memory/2036-54-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2036-93-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2036-146-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download