gcleaner | ca71d9fc64d8dce224e42bf7133d6fca288e5598ba5488cf732779419f030884

Analysis

max time kernel
91s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
08/02/2023, 10:31

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General

Target
file.exe
Size 2.6MB
Sample230208-mkcvdaad33
SHA256 ca71d9fc64d8dce224e42bf7133d6fca288e5598ba5488cf732779419f030884
MD5 1d4de39c6385132f52de969dadf46d2a
SHA1 e53c165070f671c634f967b90438d6e09cf0ff08
SHA512 d061e698125fe9c53e6e90a0b6fba68fb8f78af6913fa0cf61c1bd7552f79b97231fb92488362f29b5f2b19448e8206aca49d684e1f815a4ec9b2ed0c031999e
SSDEEP 49152:rdHvoDVy8FeTWb/tN57WkwKXvwut8eTW9Oc01mfhub3JjwRjLCgv2MR:JHvoDA8tb/tN9WXK/78O1Umjwnv2MR
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	FRec28.exe

Executes dropped EXE 3 IoCs

pid	Process
1468	file.tmp
4868	FRec28.exe
5076	OQwS6b.exe

Loads dropped DLL 3 IoCs

pid	Process
1468	file.tmp
1468	file.tmp
1468	file.tmp

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)\FHNsoftFR\FRec28\is-6NKHN.tmp	file.tmp
File created	C:\Program Files (x86)\FHNsoftFR\FRec28\is-O96LQ.tmp	file.tmp
File created	C:\Program Files (x86)\FHNsoftFR\FRec28\is-SID7F.tmp	file.tmp
File created	C:\Program Files (x86)\FHNsoftFR\FRec28\is-9M127.tmp	file.tmp
File created	C:\Program Files (x86)\FHNsoftFR\FRec28\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHNsoftFR\FRec28\is-DSHI2.tmp	file.tmp
File created	C:\Program Files (x86)\FHNsoftFR\FRec28\data\is-NQNR8.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FHNsoftFR\FRec28\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FHNsoftFR\FRec28\FRec28.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
2580	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4868	FRec28.exe
4868	FRec28.exe
4868	FRec28.exe
4868	FRec28.exe
4868	FRec28.exe
4868	FRec28.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2580	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 1468	2520	file.exe	79
PID 2520 wrote to memory of 1468	2520	file.exe	79
PID 2520 wrote to memory of 1468	2520	file.exe	79
PID 1468 wrote to memory of 4868	1468	file.tmp	80
PID 1468 wrote to memory of 4868	1468	file.tmp	80
PID 1468 wrote to memory of 4868	1468	file.tmp	80
PID 4868 wrote to memory of 5076	4868	FRec28.exe	81
PID 4868 wrote to memory of 5076	4868	FRec28.exe	81
PID 4868 wrote to memory of 5076	4868	FRec28.exe	81
PID 4868 wrote to memory of 2812	4868	FRec28.exe	89
PID 4868 wrote to memory of 2812	4868	FRec28.exe	89
PID 4868 wrote to memory of 2812	4868	FRec28.exe	89
PID 2812 wrote to memory of 2580	2812	cmd.exe	91
PID 2812 wrote to memory of 2580	2812	cmd.exe	91
PID 2812 wrote to memory of 2580	2812	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Users\Admin\AppData\Local\Temp\is-H9U65.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-H9U65.tmp\file.tmp" /SL5="$801C4,2476664,387072,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:1468
- - C:\Program Files (x86)\FHNsoftFR\FRec28\FRec28.exe
    "C:\Program Files (x86)\FHNsoftFR\FRec28\FRec28.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4868
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\OQwS6b.exe
      4⤵
      Executes dropped EXE
      PID:5076
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec28.exe" /f & erase "C:\Program Files (x86)\FHNsoftFR\FRec28\FRec28.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2812
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec28.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2580

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

FRec28.exe

Path C:\Program Files (x86)\FHNsoftFR\FRec28\FRec28.exe
Size 1.9MB
SHA256 fc08022d363b3365e6e925dedfb8f10a7a58c25af1beafe9a477c20f44757cfb
MD5 6edb44b25e2eb0d037b9bc52a62372c3
SHA1 39034e5fd6debdd0b3da4b22d3de76c16ce06eee
SHA512 7b5a8c86df4c4d54236e6dafaa2a3716cd6f7bca297afee0f24b0c82ea9afb3afa5fd0d7dcd9e0b3d101ed8cb640fd2739a4b95a6aa9c7d806876ab3d782bbff
SSDEEP 49152:2urMurrurZBB3urQurzYDur8urVurV1cn2lbSc8u7GWZm5gqGk:2urMurrurlurQuruur8urVur/c2lbSom
MD5 SHA1 SHA512 SSDEEP

Submit Download

FRec28.exe

Path C:\Program Files (x86)\FHNsoftFR\FRec28\FRec28.exe
Size 1.9MB
SHA256 fc08022d363b3365e6e925dedfb8f10a7a58c25af1beafe9a477c20f44757cfb
MD5 6edb44b25e2eb0d037b9bc52a62372c3
SHA1 39034e5fd6debdd0b3da4b22d3de76c16ce06eee
SHA512 7b5a8c86df4c4d54236e6dafaa2a3716cd6f7bca297afee0f24b0c82ea9afb3afa5fd0d7dcd9e0b3d101ed8cb640fd2739a4b95a6aa9c7d806876ab3d782bbff
SSDEEP 49152:2urMurrurZBB3urQurzYDur8urVurV1cn2lbSc8u7GWZm5gqGk:2urMurrurlurQuruur8urVur/c2lbSom
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-H9U65.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-H9U65.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 C:\Users\Admin\AppData\Local\Temp\is-P2305.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

_isdecmp.dll

Path C:\Users\Admin\AppData\Local\Temp\is-P2305.tmp\_isetup\_isdecmp.dll
Size 13KB
SHA256 e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
MD5 a813d18268affd4763dde940246dc7e5
SHA1 c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA512 b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
SSDEEP 384:BXvhMwoSitz/bjx7yxnbdn+EHvbsHoOODCg:BZ7FEAbd+EDsIO
MD5 SHA1 SHA512 SSDEEP

Submit Download

_isdecmp.dll

Path C:\Users\Admin\AppData\Local\Temp\is-P2305.tmp\_isetup\_isdecmp.dll
Size 13KB
SHA256 e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
MD5 a813d18268affd4763dde940246dc7e5
SHA1 c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA512 b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
SSDEEP 384:BXvhMwoSitz/bjx7yxnbdn+EHvbsHoOODCg:BZ7FEAbd+EDsIO
MD5 SHA1 SHA512 SSDEEP

Submit Download

OQwS6b.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\OQwS6b.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

OQwS6b.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\OQwS6b.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/1468-139-0x0000000003201000-0x0000000003203000-memory.dmp

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memory/2520-141-0x0000000000400000-0x0000000000465000-memory.dmp

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memory/2520-132-0x0000000000400000-0x0000000000465000-memory.dmp

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memory/2520-157-0x0000000000400000-0x0000000000465000-memory.dmp

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memory/4868-150-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4868-153-0x0000000000400000-0x00000000013DC000-memory.dmp

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memory/4868-146-0x0000000000400000-0x00000000013DC000-memory.dmp

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memory/4868-156-0x0000000000400000-0x00000000013DC000-memory.dmp

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memory/4868-145-0x0000000000400000-0x00000000013DC000-memory.dmp

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