cryptolocker | 7917dc11a225990069364b7e1fb64f9a7f4510c3cf0cf0a097ef4295eba452dd

General

Target

876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.exe
Size

749KB
MD5

1eac61ee26db9242ba47437a027c47d4
SHA1

3a465cb953a62c6c2dd2dc61c9f874c6ad7d8e8c
SHA256

876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b
SHA512

b5966deb188881b3d1fd19f911601e451f2126b757c1341e41048cb8dbd990c411fa8815f0610217a1fd273d193cd3f9c2f199ecb02295d28ca6eeb429f88eb4
SSDEEP

12288:ZwtTSWbZzmK1tl8gBVkj6VNQJsojXXKI50XZo/6N3VG:Zwt2WdzxfmVjXr6Zz

Score

10^/10

cryptolocker discovery persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker
Cryptolocker family
cryptolocker

Deletes itself 1 IoCs

pid	Process
2388	Wawbmdknpbal.exe

Executes dropped EXE 2 IoCs

pid	Process
2388	Wawbmdknpbal.exe
1848	Wawbmdknpbal.exe

Loads dropped DLL 3 IoCs

pid	Process
3000	876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.exe
3000	876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.exe
2388	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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\Wawbmdknpbal.exe"	Wawbmdknpbal.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\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	876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.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 3000 wrote to memory of 2388	3000	876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.exe	30
PID 3000 wrote to memory of 2388	3000	876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.exe	30
PID 3000 wrote to memory of 2388	3000	876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.exe	30
PID 3000 wrote to memory of 2388	3000	876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.exe	30
PID 2388 wrote to memory of 1848	2388	Wawbmdknpbal.exe	31
PID 2388 wrote to memory of 1848	2388	Wawbmdknpbal.exe	31
PID 2388 wrote to memory of 1848	2388	Wawbmdknpbal.exe	31
PID 2388 wrote to memory of 1848	2388	Wawbmdknpbal.exe	31

C:\Users\Admin\AppData\Local\Temp\876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.exe
"C:\Users\Admin\AppData\Local\Temp\876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
  "C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe" "/rC:\Users\Admin\AppData\Local\Temp\876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b.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:2388
- - C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
    "C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe" /w00000128
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1848

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
749KB

MD5
1eac61ee26db9242ba47437a027c47d4

SHA1
3a465cb953a62c6c2dd2dc61c9f874c6ad7d8e8c

SHA256
876511719fda2fab0438ad29f9cc2f8fd684c1897a88d433f7e9c3f2e85eac0b

SHA512
b5966deb188881b3d1fd19f911601e451f2126b757c1341e41048cb8dbd990c411fa8815f0610217a1fd273d193cd3f9c2f199ecb02295d28ca6eeb429f88eb4

Download Submit
memory/1848-25-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1848-24-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1848-28-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1848-30-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2388-16-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2388-20-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2388-17-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2388-29-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2388-31-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/3000-2-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/3000-1-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/3000-15-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/3000-0-0x00000000004BD000-0x00000000004BF000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads