gcleaner | a52195589bf6a7f415fb003dff50d68ba00953de1907f3f482ae8831645b7685

Analysis

max time kernel
66s
max time network
68s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
10-03-2023 11:26

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General

Target

93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe
Size

2.8MB
MD5

a3a0d99fa3ee1ad33f109e74e83ff869
SHA1

affaba631a5a20feae1184b6a78f52b665868ca8
SHA256

93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86
SHA512

ca0544f05298ffc05e889ed5f6df212cd2b230d8ae930c4349fcb8c197f86b98d95c0d455f31390dce58a64f7716eb1a325fa910519c0ea92abd8115b6363508
SSDEEP

49152:AGPe3orJeXQUQbitHC5QBEPZm/cVfGqjcIDqsnIlfaaIxvTPuS2lUsRAiqGH/2Uz:dPe3QIXLQ2tcQ6ZPvjcIDP8jIxLb2lUu

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

Processes:

is-113TK.tmpFRec37.exeY8cWWCXOtr36UR.exe

pid process

1352 is-113TK.tmp
1552 FRec37.exe
1404 Y8cWWCXOtr36UR.exe

pid	process
1352	is-113TK.tmp
1552	FRec37.exe
1404	Y8cWWCXOtr36UR.exe

Loads dropped DLL 7 IoCs

Processes:

93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exeis-113TK.tmpFRec37.exe

pid	process
1336	93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe
1352	is-113TK.tmp
1352	is-113TK.tmp
1352	is-113TK.tmp
1352	is-113TK.tmp
1352	is-113TK.tmp
1552	FRec37.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

Processes:

is-113TK.tmp

description	ioc	process
File opened for modification	C:\Program Files (x86)\FIOsoftFR\FRec37\FRec37.exe	is-113TK.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\is-REKME.tmp	is-113TK.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\is-J8B65.tmp	is-113TK.tmp
File opened for modification	C:\Program Files (x86)\FIOsoftFR\FRec37\unins000.dat	is-113TK.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\is-H0708.tmp	is-113TK.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\data\is-MRBUS.tmp	is-113TK.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\unins000.dat	is-113TK.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\is-1LUN5.tmp	is-113TK.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\is-CREKV.tmp	is-113TK.tmp

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

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

872 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

FRec37.exe

pid process

1552 FRec37.exe
1552 FRec37.exe
1552 FRec37.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 872 taskkill.exe

pid	process
872	taskkill.exe

pid	process
1552	FRec37.exe
1552	FRec37.exe
1552	FRec37.exe

description	pid	process
Token: SeDebugPrivilege	872	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exeis-113TK.tmpFRec37.execmd.exe

description	pid	process	target process
PID 1336 wrote to memory of 1352	1336	93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe	is-113TK.tmp
PID 1336 wrote to memory of 1352	1336	93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe	is-113TK.tmp
PID 1336 wrote to memory of 1352	1336	93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe	is-113TK.tmp
PID 1336 wrote to memory of 1352	1336	93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe	is-113TK.tmp
PID 1336 wrote to memory of 1352	1336	93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe	is-113TK.tmp
PID 1336 wrote to memory of 1352	1336	93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe	is-113TK.tmp
PID 1336 wrote to memory of 1352	1336	93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe	is-113TK.tmp
PID 1352 wrote to memory of 1552	1352	is-113TK.tmp	FRec37.exe
PID 1352 wrote to memory of 1552	1352	is-113TK.tmp	FRec37.exe
PID 1352 wrote to memory of 1552	1352	is-113TK.tmp	FRec37.exe
PID 1352 wrote to memory of 1552	1352	is-113TK.tmp	FRec37.exe
PID 1552 wrote to memory of 1404	1552	FRec37.exe	Y8cWWCXOtr36UR.exe
PID 1552 wrote to memory of 1404	1552	FRec37.exe	Y8cWWCXOtr36UR.exe
PID 1552 wrote to memory of 1404	1552	FRec37.exe	Y8cWWCXOtr36UR.exe
PID 1552 wrote to memory of 1404	1552	FRec37.exe	Y8cWWCXOtr36UR.exe
PID 1552 wrote to memory of 1328	1552	FRec37.exe	cmd.exe
PID 1552 wrote to memory of 1328	1552	FRec37.exe	cmd.exe
PID 1552 wrote to memory of 1328	1552	FRec37.exe	cmd.exe
PID 1552 wrote to memory of 1328	1552	FRec37.exe	cmd.exe
PID 1328 wrote to memory of 872	1328	cmd.exe	taskkill.exe
PID 1328 wrote to memory of 872	1328	cmd.exe	taskkill.exe
PID 1328 wrote to memory of 872	1328	cmd.exe	taskkill.exe
PID 1328 wrote to memory of 872	1328	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe
"C:\Users\Admin\AppData\Local\Temp\93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Users\Admin\AppData\Local\Temp\is-IT1SK.tmp\is-113TK.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-IT1SK.tmp\is-113TK.tmp" /SL4 $90124 "C:\Users\Admin\AppData\Local\Temp\93cb045c691341fee5fe4b5aae26233c3bdfb480db20a904ef7f7749db2c6e86.exe" 2709866 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1352
- - C:\Program Files (x86)\FIOsoftFR\FRec37\FRec37.exe
    "C:\Program Files (x86)\FIOsoftFR\FRec37\FRec37.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1552
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Y8cWWCXOtr36UR.exe
      4⤵
      Executes dropped EXE
      PID:1404
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec37.exe" /f & erase "C:\Program Files (x86)\FIOsoftFR\FRec37\FRec37.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1328
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec37.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:872

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)\FIOsoftFR\FRec37\FRec37.exe

Filesize
3.1MB

MD5
fb59bb475a5af276575144915ba831f0

SHA1
0be22acd336fcf4ecef23c8e9accc15ecd6967fe

SHA256
6550f296c6ab24dd8f46610129f56ceaf0ee448bc886c8daffb92feb3ae858ef

SHA512
8b44654d9736610d0aa0c7378f54a7c54d7d6c85dc184287948e7befb9898986d7ac538a5080ce30c436da36de8f3a5ab8be3a6e27ef3cd71672461b45df75b5

Download Submit
C:\Program Files (x86)\FIOsoftFR\FRec37\FRec37.exe

Filesize
3.1MB

MD5
fb59bb475a5af276575144915ba831f0

SHA1
0be22acd336fcf4ecef23c8e9accc15ecd6967fe

SHA256
6550f296c6ab24dd8f46610129f56ceaf0ee448bc886c8daffb92feb3ae858ef

SHA512
8b44654d9736610d0aa0c7378f54a7c54d7d6c85dc184287948e7befb9898986d7ac538a5080ce30c436da36de8f3a5ab8be3a6e27ef3cd71672461b45df75b5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\EV74ZOZO\dll[2].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-IT1SK.tmp\is-113TK.tmp

Filesize
658KB

MD5
71c654797ffa6853389354687dde286b

SHA1
edd7178ab9043acc4a05dddb9dad972ede2f7748

SHA256
97d7825ef37d313e47642ba48ad2a4421fb4b63dfcb2cf09029906939e527f04

SHA512
d05bbc1d7fccbc39a214f1a4ccebbd52963a5189d1a5dbabf8894fb085cb00e681d15d6c9aa8e2f7d90bafa9c7d45a07a9b5c2434ca6aafd0ac8944b46b90e7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-IT1SK.tmp\is-113TK.tmp

Filesize
658KB

MD5
71c654797ffa6853389354687dde286b

SHA1
edd7178ab9043acc4a05dddb9dad972ede2f7748

SHA256
97d7825ef37d313e47642ba48ad2a4421fb4b63dfcb2cf09029906939e527f04

SHA512
d05bbc1d7fccbc39a214f1a4ccebbd52963a5189d1a5dbabf8894fb085cb00e681d15d6c9aa8e2f7d90bafa9c7d45a07a9b5c2434ca6aafd0ac8944b46b90e7a

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Y8cWWCXOtr36UR.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\FIOsoftFR\FRec37\FRec37.exe

Filesize
3.1MB

MD5
fb59bb475a5af276575144915ba831f0

SHA1
0be22acd336fcf4ecef23c8e9accc15ecd6967fe

SHA256
6550f296c6ab24dd8f46610129f56ceaf0ee448bc886c8daffb92feb3ae858ef

SHA512
8b44654d9736610d0aa0c7378f54a7c54d7d6c85dc184287948e7befb9898986d7ac538a5080ce30c436da36de8f3a5ab8be3a6e27ef3cd71672461b45df75b5

Download Submit
\Users\Admin\AppData\Local\Temp\is-IT1SK.tmp\is-113TK.tmp

Filesize
658KB

MD5
71c654797ffa6853389354687dde286b

SHA1
edd7178ab9043acc4a05dddb9dad972ede2f7748

SHA256
97d7825ef37d313e47642ba48ad2a4421fb4b63dfcb2cf09029906939e527f04

SHA512
d05bbc1d7fccbc39a214f1a4ccebbd52963a5189d1a5dbabf8894fb085cb00e681d15d6c9aa8e2f7d90bafa9c7d45a07a9b5c2434ca6aafd0ac8944b46b90e7a

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-ULAVO.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-ULAVO.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}\Y8cWWCXOtr36UR.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1336-140-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1336-96-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1336-54-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1352-97-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/1352-104-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1352-105-0x0000000003070000-0x0000000004187000-memory.dmp

Filesize
17.1MB

Download
memory/1352-139-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/1352-94-0x0000000003070000-0x0000000004187000-memory.dmp

Filesize
17.1MB

Download
memory/1352-69-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1552-98-0x0000000000400000-0x0000000001517000-memory.dmp

Filesize
17.1MB

Download
memory/1552-106-0x0000000000400000-0x0000000001517000-memory.dmp

Filesize
17.1MB

Download
memory/1552-113-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1552-121-0x0000000000400000-0x0000000001517000-memory.dmp

Filesize
17.1MB

Download
memory/1552-95-0x0000000000400000-0x0000000001517000-memory.dmp

Filesize
17.1MB

Download
memory/1552-138-0x0000000000400000-0x0000000001517000-memory.dmp

Filesize
17.1MB

Download