gcleaner | b5ab0f4d32e543f970de711624896cf891fe177cb75e330b2541dbe2f84b2efe

Analysis

max time kernel
56s
max time network
60s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
08/03/2023, 10:34

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General

Target

901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe
Size

2.8MB
MD5

e6c19bff7f580f6a93a810b1712c1935
SHA1

f1b09fd1320ceb0fa94a8d4b55bbbc7afb25e6dd
SHA256

901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0
SHA512

8ba385fdac99b80d0dbeb665cd14aa919e2f855d8b61795ec691981aef3185e824fc8c2dec71af2c010e91d6665562e2fcb6036f37929e149f50e6dd5c609762
SSDEEP

49152:AG/V2zHBtIf4tq4v6lGQ+VMuoLTm071rVl51Hjx0grExnDHzhOKz:d4zHKhC6l/+9ouslvDnruDHzhOKz

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
1336	is-QCLB3.tmp
1764	FRec37.exe
1112	KgiTSWufBR.exe

Loads dropped DLL 7 IoCs

pid	Process
1616	901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe
1336	is-QCLB3.tmp
1336	is-QCLB3.tmp
1336	is-QCLB3.tmp
1336	is-QCLB3.tmp
1336	is-QCLB3.tmp
1764	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

description	ioc	Process
File opened for modification	C:\Program Files (x86)\FIOsoftFR\FRec37\FRec37.exe	is-QCLB3.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\is-NNV9I.tmp	is-QCLB3.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\is-17S1V.tmp	is-QCLB3.tmp
File opened for modification	C:\Program Files (x86)\FIOsoftFR\FRec37\unins000.dat	is-QCLB3.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\is-CKGLR.tmp	is-QCLB3.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\data\is-NTF2D.tmp	is-QCLB3.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\unins000.dat	is-QCLB3.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\is-HHMDA.tmp	is-QCLB3.tmp
File created	C:\Program Files (x86)\FIOsoftFR\FRec37\is-MVMS6.tmp	is-QCLB3.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

pid	Process
1628	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1764	FRec37.exe
1764	FRec37.exe
1764	FRec37.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1628	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1616 wrote to memory of 1336	1616	901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe	19
PID 1616 wrote to memory of 1336	1616	901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe	19
PID 1616 wrote to memory of 1336	1616	901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe	19
PID 1616 wrote to memory of 1336	1616	901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe	19
PID 1616 wrote to memory of 1336	1616	901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe	19
PID 1616 wrote to memory of 1336	1616	901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe	19
PID 1616 wrote to memory of 1336	1616	901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe	19
PID 1336 wrote to memory of 1764	1336	is-QCLB3.tmp	28
PID 1336 wrote to memory of 1764	1336	is-QCLB3.tmp	28
PID 1336 wrote to memory of 1764	1336	is-QCLB3.tmp	28
PID 1336 wrote to memory of 1764	1336	is-QCLB3.tmp	28
PID 1764 wrote to memory of 1112	1764	FRec37.exe	29
PID 1764 wrote to memory of 1112	1764	FRec37.exe	29
PID 1764 wrote to memory of 1112	1764	FRec37.exe	29
PID 1764 wrote to memory of 1112	1764	FRec37.exe	29
PID 1764 wrote to memory of 1280	1764	FRec37.exe	32
PID 1764 wrote to memory of 1280	1764	FRec37.exe	32
PID 1764 wrote to memory of 1280	1764	FRec37.exe	32
PID 1764 wrote to memory of 1280	1764	FRec37.exe	32
PID 1280 wrote to memory of 1628	1280	cmd.exe	34
PID 1280 wrote to memory of 1628	1280	cmd.exe	34
PID 1280 wrote to memory of 1628	1280	cmd.exe	34
PID 1280 wrote to memory of 1628	1280	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe
"C:\Users\Admin\AppData\Local\Temp\901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1616
- C:\Users\Admin\AppData\Local\Temp\is-NUE7V.tmp\is-QCLB3.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-NUE7V.tmp\is-QCLB3.tmp" /SL4 $70120 "C:\Users\Admin\AppData\Local\Temp\901d0d19ba4a552a8fd41451dd2143a6338376b15b37ed0adc167da496d547b0.exe" 2698816 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1336
- - 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:1764
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\KgiTSWufBR.exe
      4⤵
      Executes dropped EXE
      PID:1112
  - - 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:1280
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec37.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1628

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
a3b76ff4d8a772a3d7dad66b02328fee

SHA1
b5b4794894372c23d17316e74008aba96dc36556

SHA256
f6282d8ce263968d6e66174973f88dc1a3917aa2d5a4b134238d70f4fe4b16c8

SHA512
185ef242a6887d5cb189ea1302717d993be98773100f3199f101f74008fe1396acf6bfd51ad7a703d6293d0c48c0645f8453825e36afc8d8904a7d88019bd973

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

Filesize
3.1MB

MD5
a3b76ff4d8a772a3d7dad66b02328fee

SHA1
b5b4794894372c23d17316e74008aba96dc36556

SHA256
f6282d8ce263968d6e66174973f88dc1a3917aa2d5a4b134238d70f4fe4b16c8

SHA512
185ef242a6887d5cb189ea1302717d993be98773100f3199f101f74008fe1396acf6bfd51ad7a703d6293d0c48c0645f8453825e36afc8d8904a7d88019bd973

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\VQ77JNZF\dll[2].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-NUE7V.tmp\is-QCLB3.tmp

Filesize
658KB

MD5
71c654797ffa6853389354687dde286b

SHA1
edd7178ab9043acc4a05dddb9dad972ede2f7748

SHA256
97d7825ef37d313e47642ba48ad2a4421fb4b63dfcb2cf09029906939e527f04

SHA512
d05bbc1d7fccbc39a214f1a4ccebbd52963a5189d1a5dbabf8894fb085cb00e681d15d6c9aa8e2f7d90bafa9c7d45a07a9b5c2434ca6aafd0ac8944b46b90e7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-NUE7V.tmp\is-QCLB3.tmp

Filesize
658KB

MD5
71c654797ffa6853389354687dde286b

SHA1
edd7178ab9043acc4a05dddb9dad972ede2f7748

SHA256
97d7825ef37d313e47642ba48ad2a4421fb4b63dfcb2cf09029906939e527f04

SHA512
d05bbc1d7fccbc39a214f1a4ccebbd52963a5189d1a5dbabf8894fb085cb00e681d15d6c9aa8e2f7d90bafa9c7d45a07a9b5c2434ca6aafd0ac8944b46b90e7a

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

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

Filesize
3.1MB

MD5
a3b76ff4d8a772a3d7dad66b02328fee

SHA1
b5b4794894372c23d17316e74008aba96dc36556

SHA256
f6282d8ce263968d6e66174973f88dc1a3917aa2d5a4b134238d70f4fe4b16c8

SHA512
185ef242a6887d5cb189ea1302717d993be98773100f3199f101f74008fe1396acf6bfd51ad7a703d6293d0c48c0645f8453825e36afc8d8904a7d88019bd973

Download Submit
\Users\Admin\AppData\Local\Temp\is-NJJ7U.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-NJJ7U.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

Download Submit
\Users\Admin\AppData\Local\Temp\is-NJJ7U.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-NJJ7U.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-NUE7V.tmp\is-QCLB3.tmp

Filesize
658KB

MD5
71c654797ffa6853389354687dde286b

SHA1
edd7178ab9043acc4a05dddb9dad972ede2f7748

SHA256
97d7825ef37d313e47642ba48ad2a4421fb4b63dfcb2cf09029906939e527f04

SHA512
d05bbc1d7fccbc39a214f1a4ccebbd52963a5189d1a5dbabf8894fb085cb00e681d15d6c9aa8e2f7d90bafa9c7d45a07a9b5c2434ca6aafd0ac8944b46b90e7a

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

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1336-93-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1336-103-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/1336-94-0x0000000003040000-0x0000000004157000-memory.dmp

Filesize
17.1MB

Download
memory/1336-106-0x0000000003040000-0x0000000004157000-memory.dmp

Filesize
17.1MB

Download
memory/1336-136-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/1616-54-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1616-98-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1616-137-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1764-95-0x0000000000400000-0x0000000001517000-memory.dmp

Filesize
17.1MB

Download
memory/1764-115-0x0000000000400000-0x0000000001517000-memory.dmp

Filesize
17.1MB

Download
memory/1764-135-0x0000000000400000-0x0000000001517000-memory.dmp

Filesize
17.1MB

Download
memory/1764-109-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1764-104-0x0000000000400000-0x0000000001517000-memory.dmp

Filesize
17.1MB

Download
memory/1764-96-0x0000000000400000-0x0000000001517000-memory.dmp

Filesize
17.1MB

Download