gcleaner | c780abf86f16f5566261d91132d14f32051a755dd3b96d52edcb612a6a403229

Analysis

max time kernel
78s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
03/07/2023, 14:34

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General

Target
RekSpacer73.exe
Size 1.1MB
Sample230703-rxgfjsab9s
SHA256 c780abf86f16f5566261d91132d14f32051a755dd3b96d52edcb612a6a403229
MD5 9ccd19239b84d79befc755a8de17defc
SHA1 f68b60967def51523f37ab5019aa99592515db04
SHA512 11ac48825621bce913a534580aa33916f9e5cbe83d3b7425577c7126633beae0065d9a17221edf1cd85b8c8d8a96a4b67f14a8b894b76d850ca5a1cb9203437a
SSDEEP 12288:WkauHfOa9BhEVOcbEVjg4QqHzWTg3R0YoxZOcvFyKCBy5KDicoKv:WkB/prhsOcbsHSTgB0lxYcpCBy5uL
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner 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-1-5-21-922299981-3641064733-3870770889-1000\Control Panel\International\Geo\Nation	RekSpacer73.exe

Executes dropped EXE 1 IoCs

pid	Process
1872	biNMhdto.exe

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
3120	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4616	RekSpacer73.exe
4616	RekSpacer73.exe
4616	RekSpacer73.exe
4616	RekSpacer73.exe
4616	RekSpacer73.exe
4616	RekSpacer73.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3120	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 1872	4616	RekSpacer73.exe	85
PID 4616 wrote to memory of 1872	4616	RekSpacer73.exe	85
PID 4616 wrote to memory of 1872	4616	RekSpacer73.exe	85
PID 4616 wrote to memory of 860	4616	RekSpacer73.exe	93
PID 4616 wrote to memory of 860	4616	RekSpacer73.exe	93
PID 4616 wrote to memory of 860	4616	RekSpacer73.exe	93
PID 860 wrote to memory of 3120	860	cmd.exe	95
PID 860 wrote to memory of 3120	860	cmd.exe	95
PID 860 wrote to memory of 3120	860	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\RekSpacer73.exe
"C:\Users\Admin\AppData\Local\Temp\RekSpacer73.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Users\Admin\AppData\Roaming\{f210e3bc-1041-11ee-8d90-806e6f6e6963}\biNMhdto.exe
  2⤵
  - Executes dropped EXE
  PID:1872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "RekSpacer73.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\RekSpacer73.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:860
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "RekSpacer73.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3120

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

dll[1].htm

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\8RG8LESW\dll[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

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biNMhdto.exe

Path C:\Users\Admin\AppData\Roaming\{f210e3bc-1041-11ee-8d90-806e6f6e6963}\biNMhdto.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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biNMhdto.exe

Path C:\Users\Admin\AppData\Roaming\{f210e3bc-1041-11ee-8d90-806e6f6e6963}\biNMhdto.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/4616-133-0x0000000000400000-0x0000000001313000-memory.dmp

Download

memory/4616-134-0x0000000000400000-0x0000000001313000-memory.dmp

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memory/4616-142-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4616-148-0x0000000000400000-0x0000000001313000-memory.dmp

Download

memory/4616-159-0x0000000000400000-0x0000000001313000-memory.dmp

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