gcleaner | bf7d9b82ff0c3842fbd1dff7ffa94389d376af2b5d01ce504072f7985b556325

Analysis

max time kernel
132s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2023, 19:09

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General

Target
file.exe
Size 2.4MB
Sample230430-xtzevace3w
SHA256 bf7d9b82ff0c3842fbd1dff7ffa94389d376af2b5d01ce504072f7985b556325
MD5 1b0faf6df0915ce8437ce2f76493fea3
SHA1 0a816f0ca5f9e5be1e4f14f1c2bb3b5be97593e8
SHA512 81e6b3d344324165867495714c7d321fb8bb928c3085d199f97b50d7eef9f12a6f67135b300a03369333cc7ec4ba40016c6ad8e0a397ef4541e7a09f77e4cd15
SSDEEP 49152:AquziiJto6rFnYdfwArsZ24ieB9+HfCplY9o9AG5cu:AHziKi6rFnifre2duPYIXcu
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-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation	Rec430.exe

Executes dropped EXE 3 IoCs

pid	Process
224	is-887I5.tmp
4364	Rec430.exe
1700	WQMG7OyOmlFvH.exe

Loads dropped DLL 1 IoCs

pid	Process
224	is-887I5.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)\FKOsoftFR\Rec430\is-LDLAF.tmp	is-887I5.tmp
File opened for modification	C:\Program Files (x86)\FKOsoftFR\Rec430\unins000.dat	is-887I5.tmp
File opened for modification	C:\Program Files (x86)\FKOsoftFR\Rec430\Rec430.exe	is-887I5.tmp
File created	C:\Program Files (x86)\FKOsoftFR\Rec430\unins000.dat	is-887I5.tmp
File created	C:\Program Files (x86)\FKOsoftFR\Rec430\is-53HP1.tmp	is-887I5.tmp
File created	C:\Program Files (x86)\FKOsoftFR\Rec430\is-KAOT1.tmp	is-887I5.tmp
File created	C:\Program Files (x86)\FKOsoftFR\Rec430\is-CJ0P9.tmp	is-887I5.tmp
File created	C:\Program Files (x86)\FKOsoftFR\Rec430\is-J15FP.tmp	is-887I5.tmp
File created	C:\Program Files (x86)\FKOsoftFR\Rec430\data\is-FHNEI.tmp	is-887I5.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
4824	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4364	Rec430.exe
4364	Rec430.exe
4364	Rec430.exe
4364	Rec430.exe
4364	Rec430.exe
4364	Rec430.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4824	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 224	1932	file.exe	84
PID 1932 wrote to memory of 224	1932	file.exe	84
PID 1932 wrote to memory of 224	1932	file.exe	84
PID 224 wrote to memory of 4364	224	is-887I5.tmp	85
PID 224 wrote to memory of 4364	224	is-887I5.tmp	85
PID 224 wrote to memory of 4364	224	is-887I5.tmp	85
PID 4364 wrote to memory of 1700	4364	Rec430.exe	88
PID 4364 wrote to memory of 1700	4364	Rec430.exe	88
PID 4364 wrote to memory of 1700	4364	Rec430.exe	88
PID 4364 wrote to memory of 2772	4364	Rec430.exe	94
PID 4364 wrote to memory of 2772	4364	Rec430.exe	94
PID 4364 wrote to memory of 2772	4364	Rec430.exe	94
PID 2772 wrote to memory of 4824	2772	cmd.exe	96
PID 2772 wrote to memory of 4824	2772	cmd.exe	96
PID 2772 wrote to memory of 4824	2772	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Users\Admin\AppData\Local\Temp\is-TAMOJ.tmp\is-887I5.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-TAMOJ.tmp\is-887I5.tmp" /SL4 $501C0 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2311780 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:224
- - C:\Program Files (x86)\FKOsoftFR\Rec430\Rec430.exe
    "C:\Program Files (x86)\FKOsoftFR\Rec430\Rec430.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4364
  - - C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\WQMG7OyOmlFvH.exe
      4⤵
      Executes dropped EXE
      PID:1700
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "Rec430.exe" /f & erase "C:\Program Files (x86)\FKOsoftFR\Rec430\Rec430.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2772
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "Rec430.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4824

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

Rec430.exe

Path C:\Program Files (x86)\FKOsoftFR\Rec430\Rec430.exe
Size 3.4MB
SHA256 2b64da7cc0280aa20671f68346c781bed70e748023268ccbbc7fb3ba11f5586c
MD5 5bfae7620f5759ca46ba5357b3c5f641
SHA1 11c8cec8d4e171cdf7b362bf698d5eec40e3d643
SHA512 f960bfb0115fd317e45f2d720a64e01571fa0c346de5d6ca52664fc4268b89d5b144217943d4e853c04f74de42c0ab87329a656b0d89f95576d31c0c22d8f7e4
SSDEEP 24576:jxwjXkFxvK8g4YWhPpDuw0uExBqYQBBM62xjidgJfQEzuUt2cI+:9aXox37rCuO5QBfaeoHuUtS+
MD5 SHA1 SHA512 SSDEEP

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Rec430.exe

Path C:\Program Files (x86)\FKOsoftFR\Rec430\Rec430.exe
Size 3.4MB
SHA256 2b64da7cc0280aa20671f68346c781bed70e748023268ccbbc7fb3ba11f5586c
MD5 5bfae7620f5759ca46ba5357b3c5f641
SHA1 11c8cec8d4e171cdf7b362bf698d5eec40e3d643
SHA512 f960bfb0115fd317e45f2d720a64e01571fa0c346de5d6ca52664fc4268b89d5b144217943d4e853c04f74de42c0ab87329a656b0d89f95576d31c0c22d8f7e4
SSDEEP 24576:jxwjXkFxvK8g4YWhPpDuw0uExBqYQBBM62xjidgJfQEzuUt2cI+:9aXox37rCuO5QBfaeoHuUtS+
MD5 SHA1 SHA512 SSDEEP

Submit Download

dll[1].htm

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\YYL8D8JJ\dll[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-7I7B7.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

is-887I5.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-TAMOJ.tmp\is-887I5.tmp
Size 643KB
SHA256 4ccf3c1393e21c1fb0e525da285d125e9773bb1d554d830b3219f894e3b59fd7
MD5 72d3c1e3acb10e576f02c9b635ee58d8
SHA1 00345a3076ade8192bf3298e16d5fdf754daf793
SHA512 30a5c390dbee02ae57e520c118a53e7cfb89bda244c01b519e5fa4ca8b5b2d88c92b99141a720bfc24acc946170e087b2e8ad01f76c83931b1d039dce1f3133a
SSDEEP 12288:Jh5UooqWolrP837JzHvA6izJgnnyFNmayUAZrv4xp:f5NoqWolrP837JzHvA6yknyW7xv4xp
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-887I5.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-TAMOJ.tmp\is-887I5.tmp
Size 643KB
SHA256 4ccf3c1393e21c1fb0e525da285d125e9773bb1d554d830b3219f894e3b59fd7
MD5 72d3c1e3acb10e576f02c9b635ee58d8
SHA1 00345a3076ade8192bf3298e16d5fdf754daf793
SHA512 30a5c390dbee02ae57e520c118a53e7cfb89bda244c01b519e5fa4ca8b5b2d88c92b99141a720bfc24acc946170e087b2e8ad01f76c83931b1d039dce1f3133a
SSDEEP 12288:Jh5UooqWolrP837JzHvA6izJgnnyFNmayUAZrv4xp:f5NoqWolrP837JzHvA6yknyW7xv4xp
MD5 SHA1 SHA512 SSDEEP

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WQMG7OyOmlFvH.exe

Path C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\WQMG7OyOmlFvH.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

WQMG7OyOmlFvH.exe

Path C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\WQMG7OyOmlFvH.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/224-147-0x0000000002240000-0x0000000002241000-memory.dmp

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memory/224-199-0x0000000000400000-0x00000000004CF000-memory.dmp

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memory/224-167-0x0000000000400000-0x00000000004CF000-memory.dmp

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memory/1932-166-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1932-133-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1932-200-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/4364-175-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4364-179-0x0000000000400000-0x000000000156A000-memory.dmp

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memory/4364-198-0x0000000000400000-0x000000000156A000-memory.dmp

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memory/4364-165-0x0000000000400000-0x000000000156A000-memory.dmp

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memory/4364-164-0x0000000000400000-0x000000000156A000-memory.dmp

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