gcleaner | 2a8fdd6a69c03c5a536b9c560a65b6d25056c69416e952c51e9a3de4ed2fa2f0

Analysis

max time kernel
49s
max time network
50s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
25-03-2023 13:57

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General

Target

cbd8b305092414c89d7c5e2b0c4975ea.exe
Size

1.9MB
MD5

cbd8b305092414c89d7c5e2b0c4975ea
SHA1

b0800cb3962a493f783805fe8e00692fcef8edaa
SHA256

2a8fdd6a69c03c5a536b9c560a65b6d25056c69416e952c51e9a3de4ed2fa2f0
SHA512

f098a54828773789293762958f2330f5f00e9e91472f57386954436c204675d8e48b063ce1e3fd7a93a9b1c8cbc97adb588c30fcf1d5cad263655a59fa1aaff7
SSDEEP

49152:EGlJfs4PMjsf2rhEjfh6aOjHAK4EuSK5dlLYp:5IrhUfgjgZEroPYp

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-688UL.tmpFRec323.exe8oCet.exe

pid process

1564 is-688UL.tmp
992 FRec323.exe
1828 8oCet.exe
Loads dropped DLL 6 IoCs

Processes:

cbd8b305092414c89d7c5e2b0c4975ea.exeis-688UL.tmpFRec323.exe

pid process

1400 cbd8b305092414c89d7c5e2b0c4975ea.exe
1564 is-688UL.tmp
1564 is-688UL.tmp
1564 is-688UL.tmp
1564 is-688UL.tmp
992 FRec323.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

pid	process
1564	is-688UL.tmp
992	FRec323.exe
1828	8oCet.exe

pid	process
1400	cbd8b305092414c89d7c5e2b0c4975ea.exe
1564	is-688UL.tmp
1564	is-688UL.tmp
1564	is-688UL.tmp
1564	is-688UL.tmp
992	FRec323.exe

Drops file in Program Files directory 9 IoCs

Processes:

is-688UL.tmp

description	ioc	process
File created	C:\Program Files (x86)\FJBsoftFR\FRec323\data\is-G1T96.tmp	is-688UL.tmp
File opened for modification	C:\Program Files (x86)\FJBsoftFR\FRec323\unins000.dat	is-688UL.tmp
File created	C:\Program Files (x86)\FJBsoftFR\FRec323\unins000.dat	is-688UL.tmp
File created	C:\Program Files (x86)\FJBsoftFR\FRec323\is-8GRS0.tmp	is-688UL.tmp
File created	C:\Program Files (x86)\FJBsoftFR\FRec323\is-C0KUC.tmp	is-688UL.tmp
File created	C:\Program Files (x86)\FJBsoftFR\FRec323\is-83CSI.tmp	is-688UL.tmp
File created	C:\Program Files (x86)\FJBsoftFR\FRec323\is-QEHEM.tmp	is-688UL.tmp
File created	C:\Program Files (x86)\FJBsoftFR\FRec323\is-FSGHI.tmp	is-688UL.tmp
File opened for modification	C:\Program Files (x86)\FJBsoftFR\FRec323\FRec323.exe	is-688UL.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

1592 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

FRec323.exe

pid process

992 FRec323.exe
992 FRec323.exe
992 FRec323.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1592 taskkill.exe

pid	process
1592	taskkill.exe

pid	process
992	FRec323.exe
992	FRec323.exe
992	FRec323.exe

description	pid	process
Token: SeDebugPrivilege	1592	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

cbd8b305092414c89d7c5e2b0c4975ea.exeis-688UL.tmpFRec323.execmd.exe

description	pid	process	target process
PID 1400 wrote to memory of 1564	1400	cbd8b305092414c89d7c5e2b0c4975ea.exe	is-688UL.tmp
PID 1400 wrote to memory of 1564	1400	cbd8b305092414c89d7c5e2b0c4975ea.exe	is-688UL.tmp
PID 1400 wrote to memory of 1564	1400	cbd8b305092414c89d7c5e2b0c4975ea.exe	is-688UL.tmp
PID 1400 wrote to memory of 1564	1400	cbd8b305092414c89d7c5e2b0c4975ea.exe	is-688UL.tmp
PID 1400 wrote to memory of 1564	1400	cbd8b305092414c89d7c5e2b0c4975ea.exe	is-688UL.tmp
PID 1400 wrote to memory of 1564	1400	cbd8b305092414c89d7c5e2b0c4975ea.exe	is-688UL.tmp
PID 1400 wrote to memory of 1564	1400	cbd8b305092414c89d7c5e2b0c4975ea.exe	is-688UL.tmp
PID 1564 wrote to memory of 992	1564	is-688UL.tmp	FRec323.exe
PID 1564 wrote to memory of 992	1564	is-688UL.tmp	FRec323.exe
PID 1564 wrote to memory of 992	1564	is-688UL.tmp	FRec323.exe
PID 1564 wrote to memory of 992	1564	is-688UL.tmp	FRec323.exe
PID 992 wrote to memory of 1828	992	FRec323.exe	8oCet.exe
PID 992 wrote to memory of 1828	992	FRec323.exe	8oCet.exe
PID 992 wrote to memory of 1828	992	FRec323.exe	8oCet.exe
PID 992 wrote to memory of 1828	992	FRec323.exe	8oCet.exe
PID 992 wrote to memory of 1492	992	FRec323.exe	cmd.exe
PID 992 wrote to memory of 1492	992	FRec323.exe	cmd.exe
PID 992 wrote to memory of 1492	992	FRec323.exe	cmd.exe
PID 992 wrote to memory of 1492	992	FRec323.exe	cmd.exe
PID 1492 wrote to memory of 1592	1492	cmd.exe	taskkill.exe
PID 1492 wrote to memory of 1592	1492	cmd.exe	taskkill.exe
PID 1492 wrote to memory of 1592	1492	cmd.exe	taskkill.exe
PID 1492 wrote to memory of 1592	1492	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\cbd8b305092414c89d7c5e2b0c4975ea.exe
"C:\Users\Admin\AppData\Local\Temp\cbd8b305092414c89d7c5e2b0c4975ea.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Users\Admin\AppData\Local\Temp\is-22LHE.tmp\is-688UL.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-22LHE.tmp\is-688UL.tmp" /SL4 $80126 "C:\Users\Admin\AppData\Local\Temp\cbd8b305092414c89d7c5e2b0c4975ea.exe" 1760136 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1564
- - C:\Program Files (x86)\FJBsoftFR\FRec323\FRec323.exe
    "C:\Program Files (x86)\FJBsoftFR\FRec323\FRec323.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:992
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\8oCet.exe
      4⤵
      Executes dropped EXE
      PID:1828
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec323.exe" /f & erase "C:\Program Files (x86)\FJBsoftFR\FRec323\FRec323.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1492
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec323.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1592

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)\FJBsoftFR\FRec323\FRec323.exe

Filesize
2.2MB

MD5
22a7ef539d268eb69323d0b438e868d5

SHA1
19a4e1b13693f56735b19f447c191dd6613b5761

SHA256
5e137dbeafaf1a2d93a1fc9e9e8ef8fdbaf7b1b090e1d2b364e54c7676db5272

SHA512
6fe638f4606ef7c2e30eb48882cca119ce2ac8e58a2a3321f3252ebaa156ce4a1591040605b73960b365711a8858ede41e502ee6b6e1625cc985f635bca4e1e0

Download Submit
C:\Program Files (x86)\FJBsoftFR\FRec323\FRec323.exe

Filesize
2.2MB

MD5
22a7ef539d268eb69323d0b438e868d5

SHA1
19a4e1b13693f56735b19f447c191dd6613b5761

SHA256
5e137dbeafaf1a2d93a1fc9e9e8ef8fdbaf7b1b090e1d2b364e54c7676db5272

SHA512
6fe638f4606ef7c2e30eb48882cca119ce2ac8e58a2a3321f3252ebaa156ce4a1591040605b73960b365711a8858ede41e502ee6b6e1625cc985f635bca4e1e0

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\S7FIT0B8\dll[2].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-22LHE.tmp\is-688UL.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-22LHE.tmp\is-688UL.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

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

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\FJBsoftFR\FRec323\FRec323.exe

Filesize
2.2MB

MD5
22a7ef539d268eb69323d0b438e868d5

SHA1
19a4e1b13693f56735b19f447c191dd6613b5761

SHA256
5e137dbeafaf1a2d93a1fc9e9e8ef8fdbaf7b1b090e1d2b364e54c7676db5272

SHA512
6fe638f4606ef7c2e30eb48882cca119ce2ac8e58a2a3321f3252ebaa156ce4a1591040605b73960b365711a8858ede41e502ee6b6e1625cc985f635bca4e1e0

Download Submit
\Users\Admin\AppData\Local\Temp\is-22LHE.tmp\is-688UL.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-EAEKI.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}\8oCet.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/992-93-0x0000000000400000-0x000000000143E000-memory.dmp

Filesize
16.2MB

Download
memory/992-92-0x0000000000400000-0x000000000143E000-memory.dmp

Filesize
16.2MB

Download
memory/992-102-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/992-108-0x0000000000400000-0x000000000143E000-memory.dmp

Filesize
16.2MB

Download
memory/992-129-0x0000000000400000-0x000000000143E000-memory.dmp

Filesize
16.2MB

Download
memory/1400-54-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1400-105-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1400-131-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1564-106-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/1564-111-0x00000000039C0000-0x00000000049FE000-memory.dmp

Filesize
16.2MB

Download
memory/1564-91-0x00000000039C0000-0x00000000049FE000-memory.dmp

Filesize
16.2MB

Download
memory/1564-130-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/1564-90-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download