gcleaner | de4951605496dbd1b5e05f579b2601f45c459b9154b2c6a215517c4f8b3d0daf

General

Target

749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe
Size

351KB
MD5

749bdb421750e541d7105c7b23aae529
SHA1

1773f8dcabe2382a3f1d29f78652591662ab60a1
SHA256

de4951605496dbd1b5e05f579b2601f45c459b9154b2c6a215517c4f8b3d0daf
SHA512

5afe0e48464dd28499c0f4bf416e6806e05515926f80ad7722042fe39b6a3fe37e7d236445483a6ad4c0c5e81f7d930755772963431845a2d7ae4c9c65cf684d
SSDEEP

6144:zK+v8C1X5Oe4SlCRtNFPQGqE2H8AxXzrRgbmjTwa/RxJg:zK+v8CTOk2TDqE2H84ROyY

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

C2

gc-prtnrs.top

gcc-prtnrs.top

Signatures

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

OnlyLogger payload 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2256-2-0x00000000049D0000-0x0000000004A1F000-memory.dmp	family_onlylogger
behavioral2/memory/2256-3-0x0000000000400000-0x0000000000452000-memory.dmp	family_onlylogger
behavioral2/memory/2256-7-0x0000000000400000-0x0000000000452000-memory.dmp	family_onlylogger
behavioral2/memory/2256-6-0x00000000049D0000-0x0000000004A1F000-memory.dmp	family_onlylogger
behavioral2/memory/2256-5-0x0000000000400000-0x0000000002C8E000-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

Processes:

749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe

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

System Information Discovery
T1082

Program crash 7 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	Process	procid_target
3844	2256	WerFault.exe	83
3160	2256	WerFault.exe	83
1912	2256	WerFault.exe	83
3892	2256	WerFault.exe	83
2624	2256	WerFault.exe	83
812	2256	WerFault.exe	83
4344	2256	WerFault.exe	83

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

Processes:

749bdb421750e541d7105c7b23aae529_JaffaCakes118.execmd.exetaskkill.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	749bdb421750e541d7105c7b23aae529_JaffaCakes118.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

Processes:

taskkill.exe

pid	Process
2444	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description	pid	Process
Token: SeDebugPrivilege	2444	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

749bdb421750e541d7105c7b23aae529_JaffaCakes118.execmd.exe

description	pid	Process	procid_target
PID 2256 wrote to memory of 4804	2256	749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe	108
PID 2256 wrote to memory of 4804	2256	749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe	108
PID 2256 wrote to memory of 4804	2256	749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe	108
PID 4804 wrote to memory of 2444	4804	cmd.exe	112
PID 4804 wrote to memory of 2444	4804	cmd.exe	112
PID 4804 wrote to memory of 2444	4804	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 732
  2⤵
  - Program crash
  PID:3844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 784
  2⤵
  - Program crash
  PID:3160
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 920
  2⤵
  - Program crash
  PID:1912
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 920
  2⤵
  - Program crash
  PID:3892
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 920
  2⤵
  - Program crash
  PID:2624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 760
  2⤵
  - Program crash
  PID:812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4804
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "749bdb421750e541d7105c7b23aae529_JaffaCakes118.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 1060
  2⤵
  - Program crash
  PID:4344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2256 -ip 2256
1⤵
PID:1412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2256 -ip 2256
1⤵
PID:220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2256 -ip 2256
1⤵
PID:4812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 2256 -ip 2256
1⤵
PID:2700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2256 -ip 2256
1⤵
PID:2928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2256 -ip 2256
1⤵
PID:1500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2256 -ip 2256
1⤵
PID:5100

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

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Downloads

memory/2256-1-0x0000000002CE0000-0x0000000002DE0000-memory.dmp

Filesize
1024KB

Download
memory/2256-2-0x00000000049D0000-0x0000000004A1F000-memory.dmp

Filesize
316KB

Download
memory/2256-3-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2256-4-0x0000000002CE0000-0x0000000002DE0000-memory.dmp

Filesize
1024KB

Download
memory/2256-7-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2256-6-0x00000000049D0000-0x0000000004A1F000-memory.dmp

Filesize
316KB

Download
memory/2256-5-0x0000000000400000-0x0000000002C8E000-memory.dmp

Filesize
40.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads