gcleaner | 141d72e379f427e6305cb8a68918c4772d13976431efeca0500620800298e0a2

Analysis

max time kernel
58s
max time network
60s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
05-02-2023 21:30

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General

Target

file.exe
Size

1.9MB
MD5

31d7b9ee5d18a9c92b26e1f2353baa74
SHA1

9f4d629accc7ac4734c5390371203840e5df2271
SHA256

141d72e379f427e6305cb8a68918c4772d13976431efeca0500620800298e0a2
SHA512

d32c00ebeba39687cbbec78b4ff268b865b87534844e6a1eb4adafd10063642434df1274137949b7910171d450028607b0ca2fa2db75bff78be31aef6ea1da4b
SSDEEP

49152:xa5Vwntc/MpTm6d/RZCq2f7uKfKafViLCgv2MR:Q5Wi/MpTd5Zj2fWaNKv2MR

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
1928	file.tmp
1524	FRec25.exe
1816	Nk6LAOPHkZt8.exe

Loads dropped DLL 6 IoCs

pid	Process
2036	file.exe
1928	file.tmp
1928	file.tmp
1928	file.tmp
1928	file.tmp
1524	FRec25.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)\FHKsoftFR\FRec25\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\is-4CGB9.tmp	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\is-BAGPC.tmp	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\is-QNNNC.tmp	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\is-8I6H1.tmp	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\is-2E4P1.tmp	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\data\is-EBSK8.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHKsoftFR\FRec25\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe	file.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
268	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1524	FRec25.exe
1524	FRec25.exe
1524	FRec25.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	268	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 1928	2036	file.exe	28
PID 2036 wrote to memory of 1928	2036	file.exe	28
PID 2036 wrote to memory of 1928	2036	file.exe	28
PID 2036 wrote to memory of 1928	2036	file.exe	28
PID 2036 wrote to memory of 1928	2036	file.exe	28
PID 2036 wrote to memory of 1928	2036	file.exe	28
PID 2036 wrote to memory of 1928	2036	file.exe	28
PID 1928 wrote to memory of 1524	1928	file.tmp	29
PID 1928 wrote to memory of 1524	1928	file.tmp	29
PID 1928 wrote to memory of 1524	1928	file.tmp	29
PID 1928 wrote to memory of 1524	1928	file.tmp	29
PID 1524 wrote to memory of 1816	1524	FRec25.exe	30
PID 1524 wrote to memory of 1816	1524	FRec25.exe	30
PID 1524 wrote to memory of 1816	1524	FRec25.exe	30
PID 1524 wrote to memory of 1816	1524	FRec25.exe	30
PID 1524 wrote to memory of 1264	1524	FRec25.exe	33
PID 1524 wrote to memory of 1264	1524	FRec25.exe	33
PID 1524 wrote to memory of 1264	1524	FRec25.exe	33
PID 1524 wrote to memory of 1264	1524	FRec25.exe	33
PID 1264 wrote to memory of 268	1264	cmd.exe	35
PID 1264 wrote to memory of 268	1264	cmd.exe	35
PID 1264 wrote to memory of 268	1264	cmd.exe	35
PID 1264 wrote to memory of 268	1264	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Local\Temp\is-FUKPK.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-FUKPK.tmp\file.tmp" /SL5="$60122,1793778,97792,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe
    "C:\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1524
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Nk6LAOPHkZt8.exe
      4⤵
      Executes dropped EXE
      PID:1816
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec25.exe" /f & erase "C:\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1264
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec25.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:268

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)\FHKsoftFR\FRec25\FRec25.exe

Filesize
1.9MB

MD5
aab32cd990551ca79106dfffd2f5b094

SHA1
4306f37264c97fc0b7d5b21f0ee1b281cb39b210

SHA256
4cf8b0ff23871ee034c0f054a0254ffdcd5444facdd241065d15f0fc40be13bb

SHA512
85ac1b1f67be81414be903c6070a51e1deea766062288ea3101bca82caf6476276f515775cefea4eab0f8ee08b958784fb2eafb41098f2218c1fc9efbfa621bd

Download Submit
C:\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe

Filesize
1.9MB

MD5
aab32cd990551ca79106dfffd2f5b094

SHA1
4306f37264c97fc0b7d5b21f0ee1b281cb39b210

SHA256
4cf8b0ff23871ee034c0f054a0254ffdcd5444facdd241065d15f0fc40be13bb

SHA512
85ac1b1f67be81414be903c6070a51e1deea766062288ea3101bca82caf6476276f515775cefea4eab0f8ee08b958784fb2eafb41098f2218c1fc9efbfa621bd

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-FUKPK.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-FUKPK.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Nk6LAOPHkZt8.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe

Filesize
1.9MB

MD5
aab32cd990551ca79106dfffd2f5b094

SHA1
4306f37264c97fc0b7d5b21f0ee1b281cb39b210

SHA256
4cf8b0ff23871ee034c0f054a0254ffdcd5444facdd241065d15f0fc40be13bb

SHA512
85ac1b1f67be81414be903c6070a51e1deea766062288ea3101bca82caf6476276f515775cefea4eab0f8ee08b958784fb2eafb41098f2218c1fc9efbfa621bd

Download Submit
\Users\Admin\AppData\Local\Temp\is-E4I98.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-E4I98.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-E4I98.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-FUKPK.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Nk6LAOPHkZt8.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1524-70-0x0000000000400000-0x00000000013DB000-memory.dmp

Filesize
15.9MB

Download
memory/1524-71-0x0000000000400000-0x00000000013DB000-memory.dmp

Filesize
15.9MB

Download
memory/1524-73-0x0000000000400000-0x00000000013DB000-memory.dmp

Filesize
15.9MB

Download
memory/1524-84-0x0000000000400000-0x00000000013DB000-memory.dmp

Filesize
15.9MB

Download
memory/1524-81-0x0000000000400000-0x00000000013DB000-memory.dmp

Filesize
15.9MB

Download
memory/1524-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1928-80-0x00000000035D0000-0x00000000045AB000-memory.dmp

Filesize
15.9MB

Download
memory/1928-69-0x00000000035D0000-0x00000000045AB000-memory.dmp

Filesize
15.9MB

Download
memory/2036-68-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2036-54-0x0000000075521000-0x0000000075523000-memory.dmp

Filesize
8KB

Download
memory/2036-85-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2036-55-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download