5db0ab548a006902562be32ea74840d469dcabd5b761bdf4d436f18f174ded83

General

Target

a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe
Size

89KB
MD5

a00ec201154552f2403d645e5d3f8cd2
SHA1

56fb70022bf815a985c7f7a28742730e10d415db
SHA256

5db0ab548a006902562be32ea74840d469dcabd5b761bdf4d436f18f174ded83
SHA512

0ce6fdba6f44a53d3fae425abec6371f1348f548022aec04c1380322c707ee0445bceca0eb7d42ee48d5c3ce5e326df9f1102b6e7c9be64906901f5dc930b1e9
SSDEEP

768:I8fXlAgNqrm5GrLL4T6kPZdjpstFdMC6GBT/V:6gom5GU3PLjw6Q

Score

7^/10

discovery persistence upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0007000000023457-6.dat	acprotect

Checks computer location settings 2 TTPs 2 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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1156	rundll32.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4272-0-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/4272-5-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/files/0x0007000000023457-6.dat	upx
behavioral2/memory/1156-8-0x0000000010000000-0x0000000010106000-memory.dmp	upx
behavioral2/memory/1156-9-0x0000000010000000-0x0000000010106000-memory.dmp	upx

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\ins = "Olimpk.dll,"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SfcDisable = "4294967197"	rundll32.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Kance.dll	a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\Olimpk.dll	a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\myCfg.nls	a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5096	1156	WerFault.exe	86

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	sfc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4272 wrote to memory of 1156	4272	a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe	86
PID 4272 wrote to memory of 1156	4272	a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe	86
PID 4272 wrote to memory of 1156	4272	a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe	86
PID 1156 wrote to memory of 1112	1156	rundll32.exe	87
PID 1156 wrote to memory of 1112	1156	rundll32.exe	87
PID 1156 wrote to memory of 1112	1156	rundll32.exe	87

C:\Users\Admin\AppData\Local\Temp\a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4272
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\system32\rundll32.exe" Olimpk.dll,init C:\Users\Admin\AppData\Local\Temp\a00ec201154552f2403d645e5d3f8cd2_JaffaCakes118.exe
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - Modifies WinLogon
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1156
- - C:\Windows\SysWOW64\sfc.exe
    "C:\Windows\system32\sfc.exe" /REVERT
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1112
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1156 -s 1232
    3⤵
    - Program crash
    PID:5096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1156 -ip 1156
1⤵
PID:1520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

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

C:\Windows\SysWOW64\Olimpk.dll

Filesize
28KB

MD5
8a81e3c8e5a29e94d73b5fe43ffc9283

SHA1
ce85552c7104276c08ffa7088affab2ac39620ef

SHA256
524775d2fceca57252815c2cf7dc19b0669935bc062d44a3431587ee99ba352d

SHA512
ee06876d45c0b46abde0fb8bc97aa23b6a47c8f27e9a073a9c27b252f7e0993bacb38fb871b8b76313f012715bb13746483ae27cc04b92d2c41b6f5b71349053

Download Submit
memory/1156-8-0x0000000010000000-0x0000000010106000-memory.dmp

Filesize
1.0MB

Download
memory/1156-9-0x0000000010000000-0x0000000010106000-memory.dmp

Filesize
1.0MB

Download
memory/4272-0-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4272-5-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads