gcleaner | 2fa8cdbb791a1f3f9b41f883984fb2cf73168d8a0444ca4c6714fb6a8e32cb8d

Analysis

max time kernel
65s
max time network
68s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
05/02/2023, 00:46

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General

Target
file.exe
Size 2.2MB
Sample230205-a4mgpsaf6x
SHA256 2fa8cdbb791a1f3f9b41f883984fb2cf73168d8a0444ca4c6714fb6a8e32cb8d
MD5 65115fe6ef53b1efbc91fbab2cd9d6be
SHA1 907db16be957c54140af45076e2389d601c4052c
SHA512 e0d283824e13b48a97857d8208bf0c4c179d4e032351852bc61af18b25ade791d001aa0e5fb669c41a57d223aa7a4db348bbd00cd62c1d502231792315115597
SSDEEP 49152:d3ZZPqyuWlqu4xzltGPowgif4Teqhn0Az2OADQ6Fd0/AiqpLCgv2MR:XZCyusYrifYn0C2dEkv2MR
MD5 SHA1 SHA512 SSDEEP

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
1348	file.tmp
1540	FRec24.exe
788	zOj6Oaui.exe

Loads dropped DLL 6 IoCs

pid	Process
856	file.exe
1348	file.tmp
1348	file.tmp
1348	file.tmp
1348	file.tmp
1540	FRec24.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)\FHJsoftFR\FRec24\is-FRMD7.tmp	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\is-F44V2.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHJsoftFR\FRec24\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\is-1OTEF.tmp	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\data\is-3HVC1.tmp	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\is-EQM85.tmp	file.tmp
File created	C:\Program Files (x86)\FHJsoftFR\FRec24\is-BB43A.tmp	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
1696	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1540	FRec24.exe
1540	FRec24.exe
1540	FRec24.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1696	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 1348	856	file.exe	26
PID 856 wrote to memory of 1348	856	file.exe	26
PID 856 wrote to memory of 1348	856	file.exe	26
PID 856 wrote to memory of 1348	856	file.exe	26
PID 856 wrote to memory of 1348	856	file.exe	26
PID 856 wrote to memory of 1348	856	file.exe	26
PID 856 wrote to memory of 1348	856	file.exe	26
PID 1348 wrote to memory of 1540	1348	file.tmp	27
PID 1348 wrote to memory of 1540	1348	file.tmp	27
PID 1348 wrote to memory of 1540	1348	file.tmp	27
PID 1348 wrote to memory of 1540	1348	file.tmp	27
PID 1540 wrote to memory of 788	1540	FRec24.exe	28
PID 1540 wrote to memory of 788	1540	FRec24.exe	28
PID 1540 wrote to memory of 788	1540	FRec24.exe	28
PID 1540 wrote to memory of 788	1540	FRec24.exe	28
PID 1540 wrote to memory of 1672	1540	FRec24.exe	31
PID 1540 wrote to memory of 1672	1540	FRec24.exe	31
PID 1540 wrote to memory of 1672	1540	FRec24.exe	31
PID 1540 wrote to memory of 1672	1540	FRec24.exe	31
PID 1672 wrote to memory of 1696	1672	cmd.exe	33
PID 1672 wrote to memory of 1696	1672	cmd.exe	33
PID 1672 wrote to memory of 1696	1672	cmd.exe	33
PID 1672 wrote to memory of 1696	1672	cmd.exe	33

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:856
- C:\Users\Admin\AppData\Local\Temp\is-3D92H.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-3D92H.tmp\file.tmp" /SL5="$6012A,2090054,345600,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:1348
- - C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe
    "C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1540
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\zOj6Oaui.exe
      4⤵
      Executes dropped EXE
      PID:788
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec24.exe" /f & erase "C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1672
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec24.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1696

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

FRec24.exe

Path C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe
Size 1.8MB
SHA256 82a063c869cf685e309bdc0fd00d271830c6cdabf180c16ffc27fe39fa1139c0
MD5 6e0c5a939660a2ce742a336590b75af9
SHA1 91d1660759479d80d5270255b3a76360ce926666
SHA512 d9cc4eb15b50a48c16ab5b5a0d2ff1d2b434c806a0596e3415993e3f1b06a0f218352315ca66afeb18673893a9aa41b2364db10cced456336089e2ac1ebfe65d
SSDEEP 49152:UurUurxxurqurdmurourlurnurPvQap1sdQFqfhME0oWx:UurUurjurqurdmurourlurnurPvQap1R
MD5 SHA1 SHA512 SSDEEP

Submit Download

FRec24.exe

Path C:\Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe
Size 1.8MB
SHA256 82a063c869cf685e309bdc0fd00d271830c6cdabf180c16ffc27fe39fa1139c0
MD5 6e0c5a939660a2ce742a336590b75af9
SHA1 91d1660759479d80d5270255b3a76360ce926666
SHA512 d9cc4eb15b50a48c16ab5b5a0d2ff1d2b434c806a0596e3415993e3f1b06a0f218352315ca66afeb18673893a9aa41b2364db10cced456336089e2ac1ebfe65d
SSDEEP 49152:UurUurxxurqurdmurourlurnurPvQap1sdQFqfhME0oWx:UurUurjurqurdmurourlurnurPvQap1R
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-3D92H.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-3D92H.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

Submit Download

zOj6Oaui.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\zOj6Oaui.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

FRec24.exe

Path \Program Files (x86)\FHJsoftFR\FRec24\FRec24.exe
Size 1.8MB
SHA256 82a063c869cf685e309bdc0fd00d271830c6cdabf180c16ffc27fe39fa1139c0
MD5 6e0c5a939660a2ce742a336590b75af9
SHA1 91d1660759479d80d5270255b3a76360ce926666
SHA512 d9cc4eb15b50a48c16ab5b5a0d2ff1d2b434c806a0596e3415993e3f1b06a0f218352315ca66afeb18673893a9aa41b2364db10cced456336089e2ac1ebfe65d
SSDEEP 49152:UurUurxxurqurdmurourlurnurPvQap1sdQFqfhME0oWx:UurUurjurqurdmurourlurnurPvQap1R
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path \Users\Admin\AppData\Local\Temp\is-3D92H.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-690RB.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-690RB.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-690RB.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

zOj6Oaui.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\zOj6Oaui.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/856-65-0x0000000000400000-0x000000000045B000-memory.dmp

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memory/856-55-0x0000000000400000-0x000000000045B000-memory.dmp

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memory/856-54-0x0000000076151000-0x0000000076153000-memory.dmp

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memory/856-86-0x0000000000400000-0x000000000045B000-memory.dmp

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memory/1348-69-0x0000000003690000-0x0000000004666000-memory.dmp

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memory/1348-77-0x0000000003690000-0x0000000004666000-memory.dmp

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memory/1540-70-0x0000000000400000-0x00000000013D6000-memory.dmp

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memory/1540-73-0x0000000000400000-0x00000000013D6000-memory.dmp

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memory/1540-78-0x0000000000400000-0x00000000013D6000-memory.dmp

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memory/1540-79-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1540-82-0x0000000000400000-0x00000000013D6000-memory.dmp

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memory/1540-85-0x0000000000400000-0x00000000013D6000-memory.dmp

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memory/1540-71-0x0000000000400000-0x00000000013D6000-memory.dmp

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