gcleaner | 9382b14d05294e88954bc799f7cbf86f98959c60ffa06f0e02dedad5d7230c49

General

Target

JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.exe
Size

432KB
MD5

41028752ad94dc4206e7532332bb4b5a
SHA1

f7bb7ebb3667f4b748252529402f96df43b5de41
SHA256

9382b14d05294e88954bc799f7cbf86f98959c60ffa06f0e02dedad5d7230c49
SHA512

3697f029b9b6f36655d1f3ced5efdff3e855801d65eadf97ad686edd77898bb42b58f211ea21cd3c612e46778308998edbb4f748362704bfa97a3aa81cce9e77
SSDEEP

6144:ZU+m2xF9/rN4+QlMMzb4t9jNtfnMptCrqKYJV9x0YiqE1Kefq2PzFEWbItp38JV/:Z2IP0ct9LMp0rqKYtXTg/q2rFx6MJ

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

C2

gcl-gb.biz

45.9.20.13

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Gcleaner family
gcleaner
OnlyLogger
A tiny loader that uses IPLogger to get its payload.
loader onlylogger
Onlylogger family
onlylogger

OnlyLogger payload 5 IoCs

resource	yara_rule
behavioral2/memory/3648-2-0x0000000000A20000-0x0000000000A69000-memory.dmp	family_onlylogger
behavioral2/memory/3648-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/3648-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/3648-5-0x0000000000A20000-0x0000000000A69000-memory.dmp	family_onlylogger
behavioral2/memory/3648-4-0x0000000000400000-0x000000000089B000-memory.dmp	family_onlylogger

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.exe

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

System Information Discovery
T1082

Program crash 7 IoCs

pid	pid_target	Process	procid_target
2640	3648	WerFault.exe	80
3596	3648	WerFault.exe	80
856	3648	WerFault.exe	80
4536	3648	WerFault.exe	80
444	3648	WerFault.exe	80
5028	3648	WerFault.exe	80
3004	3648	WerFault.exe	80

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	JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.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
3924	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3924	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3648 wrote to memory of 3068	3648	JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.exe	95
PID 3648 wrote to memory of 3068	3648	JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.exe	95
PID 3648 wrote to memory of 3068	3648	JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.exe	95
PID 3068 wrote to memory of 3924	3068	cmd.exe	99
PID 3068 wrote to memory of 3924	3068	cmd.exe	99
PID 3068 wrote to memory of 3924	3068	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 708
  2⤵
  - Program crash
  PID:2640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 712
  2⤵
  - Program crash
  PID:3596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 920
  2⤵
  - Program crash
  PID:856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 940
  2⤵
  - Program crash
  PID:4536
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 932
  2⤵
  - Program crash
  PID:444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 944
  2⤵
  - Program crash
  PID:5028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3068
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_41028752ad94dc4206e7532332bb4b5a.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 1112
  2⤵
  - Program crash
  PID:3004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3648 -ip 3648
1⤵
PID:2176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3648 -ip 3648
1⤵
PID:3164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3648 -ip 3648
1⤵
PID:2236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 3648 -ip 3648
1⤵
PID:2884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3648 -ip 3648
1⤵
PID:1612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3648 -ip 3648
1⤵
PID:2612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3648 -ip 3648
1⤵
PID:1052

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

memory/3648-2-0x0000000000A20000-0x0000000000A69000-memory.dmp

Filesize
292KB

Download
memory/3648-1-0x0000000000A90000-0x0000000000B90000-memory.dmp

Filesize
1024KB

Download
memory/3648-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3648-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3648-5-0x0000000000A20000-0x0000000000A69000-memory.dmp

Filesize
292KB

Download
memory/3648-4-0x0000000000400000-0x000000000089B000-memory.dmp

Filesize
4.6MB

Download

Analysis

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