cryptolocker | 931708bffa6eed76585c166a080ea6b544f32951cb5dbc2d2065088ee9ebad95

General

Target

31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe
Size

733KB
MD5

31a09770fea2d2ad58709b9a2f0e78c1
SHA1

52236081902e7b6de16baf141ffb518a6cba4691
SHA256

931708bffa6eed76585c166a080ea6b544f32951cb5dbc2d2065088ee9ebad95
SHA512

3972210025332a87df980513a3223abfd354be22be149bdaef7294b2a6d0ac2cf144120074cbb5b78ab393f0201026ec90fb46ba3b2b7f141738920d66a387de
SSDEEP

12288:0wThSCGHciZYJgDCVcEBQFpC5udlV3kbxZyNccd6/:06hQHnKxBEpC56V0b3yev

Score

10^/10

cryptolocker discovery persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2700	Wawbmdknpbal.exe

Executes dropped EXE 2 IoCs

pid	Process
2700	Wawbmdknpbal.exe
2572	Wawbmdknpbal.exe

Loads dropped DLL 3 IoCs

pid	Process
2696	31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe
2696	31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe
2700	Wawbmdknpbal.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\Wawbmdknpbal.exe"	Wawbmdknpbal.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\Wawbmdknpbal.exe"	Wawbmdknpbal.exe

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	31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Wawbmdknpbal.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Wawbmdknpbal.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 2700	2696	31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe	30
PID 2696 wrote to memory of 2700	2696	31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe	30
PID 2696 wrote to memory of 2700	2696	31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe	30
PID 2696 wrote to memory of 2700	2696	31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe	30
PID 2700 wrote to memory of 2572	2700	Wawbmdknpbal.exe	31
PID 2700 wrote to memory of 2572	2700	Wawbmdknpbal.exe	31
PID 2700 wrote to memory of 2572	2700	Wawbmdknpbal.exe	31
PID 2700 wrote to memory of 2572	2700	Wawbmdknpbal.exe	31

C:\Users\Admin\AppData\Local\Temp\31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696
- C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
  "C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe" "/rC:\Users\Admin\AppData\Local\Temp\31a09770fea2d2ad58709b9a2f0e78c1_JaffaCakes118.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2700
- - C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
    "C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe" /w0000011C
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe

Filesize
733KB

MD5
31a09770fea2d2ad58709b9a2f0e78c1

SHA1
52236081902e7b6de16baf141ffb518a6cba4691

SHA256
931708bffa6eed76585c166a080ea6b544f32951cb5dbc2d2065088ee9ebad95

SHA512
3972210025332a87df980513a3223abfd354be22be149bdaef7294b2a6d0ac2cf144120074cbb5b78ab393f0201026ec90fb46ba3b2b7f141738920d66a387de

Download Submit
memory/2572-25-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2572-26-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2572-24-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2572-30-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2696-1-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2696-2-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2696-15-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2696-0-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2700-16-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2700-17-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2700-18-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2700-29-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2700-31-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads