gcleaner | a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a

Analysis

max time kernel
91s
max time network
95s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
01/09/2024, 16:49

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General

Target
a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe
Size 403KB
Sample240901-vbr7psxanb
SHA256 a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a
MD5 8847eec656ba7c09a3e2f574d6cd8add
SHA1 49c6bac30af9e13defceb2e4b35cc4c498f132d3
SHA512 80fc9628cdebf8d5421c0408fdf2b548bc6f160b822c22977c42e62bfccfb8ca60e5c1c0c64947e2515f9a08307a6cb3ec3e1023c7a682f8b3bbb9e24f580eb0
SSDEEP 3072:jw1ZKEtOzjWZpCxc+qjr5Rqd77FFWiHbks1SUrlIGV2FjbiIHtiZsFtM5+3lUXW:sZKgcjWZgxc+qnf21osE0IGEjb/ntM+
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

80.66.75.114

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
3980	2156	WerFault.exe	77
2096	2156	WerFault.exe	77
1908	2156	WerFault.exe	77
3640	2156	WerFault.exe	77
568	2156	WerFault.exe	77
4708	2156	WerFault.exe	77
1560	2156	WerFault.exe	77
2120	2156	WerFault.exe	77
124	2156	WerFault.exe	77
2336	2156	WerFault.exe	77

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2548	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2548	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 4056	2156	a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe	97
PID 2156 wrote to memory of 4056	2156	a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe	97
PID 2156 wrote to memory of 4056	2156	a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe	97
PID 4056 wrote to memory of 2548	4056	cmd.exe	102
PID 4056 wrote to memory of 2548	4056	cmd.exe	102
PID 4056 wrote to memory of 2548	4056	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe
"C:\Users\Admin\AppData\Local\Temp\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 476
  2⤵
  - Program crash
  PID:3980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 796
  2⤵
  - Program crash
  PID:2096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 816
  2⤵
  - Program crash
  PID:1908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 796
  2⤵
  - Program crash
  PID:3640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 888
  2⤵
  - Program crash
  PID:568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 976
  2⤵
  - Program crash
  PID:4708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 1084
  2⤵
  - Program crash
  PID:1560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 1448
  2⤵
  - Program crash
  PID:2120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 1768
  2⤵
  - Program crash
  PID:124
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4056
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "a30861a20f9b59b4a04c1d5cc8c27f9d07eff589ce0ec5bdccce6ca3e468925a.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 1720
  2⤵
  - Program crash
  PID:2336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 2156 -ip 2156
1⤵
PID:2732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 2156 -ip 2156
1⤵
PID:1848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2156 -ip 2156
1⤵
PID:3252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2156 -ip 2156
1⤵
PID:432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2156 -ip 2156
1⤵
PID:2144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2156 -ip 2156
1⤵
PID:1544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2156 -ip 2156
1⤵
PID:492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2156 -ip 2156
1⤵
PID:4864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2156 -ip 2156
1⤵
PID:2760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2156 -ip 2156
1⤵
PID:3112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

download[1].htm

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\P6H4A3UA\download[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

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memory/2156-1-0x0000000000820000-0x0000000000920000-memory.dmp

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memory/2156-2-0x00000000007E0000-0x000000000081C000-memory.dmp

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memory/2156-3-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/2156-8-0x0000000010000000-0x000000001001C000-memory.dmp

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memory/2156-13-0x0000000000820000-0x0000000000920000-memory.dmp

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memory/2156-15-0x00000000007E0000-0x000000000081C000-memory.dmp

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memory/2156-17-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/2156-16-0x0000000000400000-0x00000000005F7000-memory.dmp

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memory/2156-31-0x0000000000400000-0x00000000005F7000-memory.dmp

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memory/2156-35-0x0000000000400000-0x00000000005F7000-memory.dmp

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memory/2156-36-0x0000000000400000-0x000000000043F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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