gcleaner | eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef

General

Target

eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe
Size

258KB
MD5

1df9c36e7453aca251f205841bd5430e
SHA1

e387faeaa2dcee434ef8f362e949e250e128b3bb
SHA256

eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef
SHA512

97689029ac51fd085d28087b1fa666bf3309846a1f6e4dbdc73d17729aaf125fa2ce522d15db55db836179f962f4f7150257b337a01c6d2229ff5fdc30ffa9c2
SSDEEP

6144:EEUdB5XqR4He2O2U+kTRhUEBBnlu7MhaDpW:EEUdHXquHVOOOTEcM

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	eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe

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

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
2792	2440	WerFault.exe	90
4508	2440	WerFault.exe	90
1168	2440	WerFault.exe	90
4864	2440	WerFault.exe	90
1180	2440	WerFault.exe	90
2100	2440	WerFault.exe	90
1480	2440	WerFault.exe	90
2692	2440	WerFault.exe	90

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	eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4448	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4448	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 3588	2440	eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe	117
PID 2440 wrote to memory of 3588	2440	eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe	117
PID 2440 wrote to memory of 3588	2440	eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe	117
PID 3588 wrote to memory of 4448	3588	cmd.exe	121
PID 3588 wrote to memory of 4448	3588	cmd.exe	121
PID 3588 wrote to memory of 4448	3588	cmd.exe	121

C:\Users\Admin\AppData\Local\Temp\eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe
"C:\Users\Admin\AppData\Local\Temp\eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 748
  2⤵
  - Program crash
  PID:2792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 780
  2⤵
  - Program crash
  PID:4508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 780
  2⤵
  - Program crash
  PID:1168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 848
  2⤵
  - Program crash
  PID:4864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 904
  2⤵
  - Program crash
  PID:1180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 976
  2⤵
  - Program crash
  PID:2100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 1340
  2⤵
  - Program crash
  PID:1480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3588
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "eb6127c9b3934bc49662273652adab4697b60e6e04a125eea688e23272dba7ef.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 1264
  2⤵
  - Program crash
  PID:2692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2440 -ip 2440
1⤵
PID:1644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2440 -ip 2440
1⤵
PID:3224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2440 -ip 2440
1⤵
PID:3624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2440 -ip 2440
1⤵
PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2440 -ip 2440
1⤵
PID:4056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2440 -ip 2440
1⤵
PID:1624

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=4180,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=4608 /prefetch:8
1⤵
PID:4420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2440 -ip 2440
1⤵
PID:4980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 2440 -ip 2440
1⤵
PID:2460

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/2440-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2440-2-0x00000000005C0000-0x00000000005ED000-memory.dmp

Filesize
180KB

Download
memory/2440-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2440-8-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2440-9-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2440-11-0x00000000005C0000-0x00000000005ED000-memory.dmp

Filesize
180KB

Download
memory/2440-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2440-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2440-21-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download

Analysis

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