gcleaner | 7750663d984441ed3e1cc46e7ae8e15bebd5e3486a161bc2e426c9e5a8878ccd

Analysis

max time kernel
61s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/02/2023, 01:02

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General

Target
file.exe
Size 2.0MB
Sample230206-bdsfpseh8x
SHA256 7750663d984441ed3e1cc46e7ae8e15bebd5e3486a161bc2e426c9e5a8878ccd
MD5 fd60c61da9cd34ccfd1ec7aa1d16676f
SHA1 20e7034d2e4f1302772fb1035999a3a7006dec0e
SHA512 131b70a65a26623125169acd2f6d4f3bf35150d6ef8806588f60af11dae0ab5f5ef20163ba9b0d48d1a0637d6bdbe3915bccca117732621f49e111479c9d4605
SSDEEP 49152:xa+Lw2oVdAjjTqGvZiwkEt5wu8J4mwdY32hKl6VqtDjLCgv2MR:Q+MdVjGvgXqwu82mwdYGkVlv2MR
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	FRec25.exe

Executes dropped EXE 3 IoCs

pid	Process
3008	file.tmp
3924	FRec25.exe
844	vTqQbJR.exe

Loads dropped DLL 1 IoCs

pid	Process
3008	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 opened for modification	C:\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FHKsoftFR\FRec25\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\is-SK7C4.tmp	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\is-NJHHC.tmp	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\is-EMJ6Q.tmp	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\data\is-H9DQ8.tmp	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\is-TRGOU.tmp	file.tmp
File created	C:\Program Files (x86)\FHKsoftFR\FRec25\is-2V31U.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
3128	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3924	FRec25.exe
3924	FRec25.exe
3924	FRec25.exe
3924	FRec25.exe
3924	FRec25.exe
3924	FRec25.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3128	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 3008	4532	file.exe	81
PID 4532 wrote to memory of 3008	4532	file.exe	81
PID 4532 wrote to memory of 3008	4532	file.exe	81
PID 3008 wrote to memory of 3924	3008	file.tmp	82
PID 3008 wrote to memory of 3924	3008	file.tmp	82
PID 3008 wrote to memory of 3924	3008	file.tmp	82
PID 3924 wrote to memory of 844	3924	FRec25.exe	83
PID 3924 wrote to memory of 844	3924	FRec25.exe	83
PID 3924 wrote to memory of 844	3924	FRec25.exe	83
PID 3924 wrote to memory of 4640	3924	FRec25.exe	91
PID 3924 wrote to memory of 4640	3924	FRec25.exe	91
PID 3924 wrote to memory of 4640	3924	FRec25.exe	91
PID 4640 wrote to memory of 3128	4640	cmd.exe	93
PID 4640 wrote to memory of 3128	4640	cmd.exe	93
PID 4640 wrote to memory of 3128	4640	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\AppData\Local\Temp\is-1AKVQ.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-1AKVQ.tmp\file.tmp" /SL5="$9002C,1815480,97792,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:3008
- - C:\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe
    "C:\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3924
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\vTqQbJR.exe
      4⤵
      Executes dropped EXE
      PID:844
  - - 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:4640
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec25.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3128

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

FRec25.exe

Path C:\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe
Size 1.9MB
SHA256 5f2339883ce36b2e0726e73e4a7cdd4d47549311f4e493ffcbadda68ef2500fa
MD5 805d1c2cb533c93e5d06e3d4be082a02
SHA1 76b74e9cbbd1f6220d07c47d21d6dae3c545b34a
SHA512 6f410a3039231db000bb3853a801e7b015f5cf4ec2eab2a50b21348fa1a343c18c2090235d7ffd4840fa32800be259ca7e66d640b6d5a82d623c39bdfd72b7cf
SSDEEP 49152:UurzurCur6aureur7urNur5UurWVxTTv6IwQJXyXXh0:UurzurCur6aureur7urNur2urWDvv6Ij
MD5 SHA1 SHA512 SSDEEP

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FRec25.exe

Path C:\Program Files (x86)\FHKsoftFR\FRec25\FRec25.exe
Size 1.9MB
SHA256 5f2339883ce36b2e0726e73e4a7cdd4d47549311f4e493ffcbadda68ef2500fa
MD5 805d1c2cb533c93e5d06e3d4be082a02
SHA1 76b74e9cbbd1f6220d07c47d21d6dae3c545b34a
SHA512 6f410a3039231db000bb3853a801e7b015f5cf4ec2eab2a50b21348fa1a343c18c2090235d7ffd4840fa32800be259ca7e66d640b6d5a82d623c39bdfd72b7cf
SSDEEP 49152:UurzurCur6aureur7urNur5UurWVxTTv6IwQJXyXXh0:UurzurCur6aureur7urNur2urWDvv6Ij
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-1AKVQ.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-1AKVQ.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-86TPJ.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

vTqQbJR.exe

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

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vTqQbJR.exe

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

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memory/3924-150-0x0000000000400000-0x00000000013DB000-memory.dmp

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memory/3924-143-0x0000000000400000-0x00000000013DB000-memory.dmp

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memory/3924-142-0x0000000000400000-0x00000000013DB000-memory.dmp

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memory/3924-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3924-153-0x0000000000400000-0x00000000013DB000-memory.dmp

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memory/4532-132-0x0000000000400000-0x000000000041F000-memory.dmp

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memory/4532-138-0x0000000000400000-0x000000000041F000-memory.dmp

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memory/4532-154-0x0000000000400000-0x000000000041F000-memory.dmp

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