gcleaner | aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa

General

Target

aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe
Size

282KB
MD5

02bb7b3e922228d157cf73fcc17fa5e6
SHA1

da698abfd0e2612c08396d706e2b8050cec6f5f0
SHA256

aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa
SHA512

5f8db6de75c9aa7e55e61de6ec3f6ec496103d8b744c19bd017f9e112ba926c510baaf85940fc3a999c5e7d27dfab073b3264c366e6f1c7ba1fb7d0f2a51ef9c
SSDEEP

6144:4//L8yCAvG97vjF+YWl/DnTEOFQ6IGqXH/:4//Qy9+97L8DnTHkv

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

pid	pid_target	Process	procid_target
1488	4040	WerFault.exe	88
2108	4040	WerFault.exe	88
2984	4040	WerFault.exe	88
4872	4040	WerFault.exe	88
4396	4040	WerFault.exe	88
4568	4040	WerFault.exe	88
1532	4040	WerFault.exe	88
4596	4040	WerFault.exe	88
2228	4040	WerFault.exe	88

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	aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1992	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4040 wrote to memory of 4712	4040	aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe	114
PID 4040 wrote to memory of 4712	4040	aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe	114
PID 4040 wrote to memory of 4712	4040	aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe	114
PID 4712 wrote to memory of 1992	4712	cmd.exe	118
PID 4712 wrote to memory of 1992	4712	cmd.exe	118
PID 4712 wrote to memory of 1992	4712	cmd.exe	118

C:\Users\Admin\AppData\Local\Temp\aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe
"C:\Users\Admin\AppData\Local\Temp\aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 740
  2⤵
  - Program crash
  PID:1488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 748
  2⤵
  - Program crash
  PID:2108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 792
  2⤵
  - Program crash
  PID:2984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 760
  2⤵
  - Program crash
  PID:4872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 904
  2⤵
  - Program crash
  PID:4396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 980
  2⤵
  - Program crash
  PID:4568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 1120
  2⤵
  - Program crash
  PID:1532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 1332
  2⤵
  - Program crash
  PID:4596
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4712
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "aa0a301b357e04455ee9a5d2e99a1139381e0618457600676b5e14932f922efa.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 1456
  2⤵
  - Program crash
  PID:2228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4040 -ip 4040
1⤵
PID:2752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4040 -ip 4040
1⤵
PID:672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4040 -ip 4040
1⤵
PID:2988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4040 -ip 4040
1⤵
PID:4440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4040 -ip 4040
1⤵
PID:220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4040 -ip 4040
1⤵
PID:3024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4040 -ip 4040
1⤵
PID:1652

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4668,i,16315016104747277319,5510969007830467313,262144 --variations-seed-version --mojo-platform-channel-handle=4060 /prefetch:8
1⤵
PID:2232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4040 -ip 4040
1⤵
PID:3476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 4040 -ip 4040
1⤵
PID:3632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\BKKBWXOR\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4040-1-0x0000000000840000-0x0000000000940000-memory.dmp

Filesize
1024KB

Download
memory/4040-2-0x00000000007F0000-0x000000000081D000-memory.dmp

Filesize
180KB

Download
memory/4040-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4040-8-0x0000000000840000-0x0000000000940000-memory.dmp

Filesize
1024KB

Download
memory/4040-11-0x00000000007F0000-0x000000000081D000-memory.dmp

Filesize
180KB

Download
memory/4040-10-0x0000000000400000-0x0000000000542000-memory.dmp

Filesize
1.3MB

Download
memory/4040-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4040-21-0x0000000000400000-0x0000000000542000-memory.dmp

Filesize
1.3MB

Download
memory/4040-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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