cryptolocker | b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4

General

Target
b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4.exe
Size 732KB
Sample221206-vbmbfshf71
SHA256 b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4
MD5 a8e0d4771c1f71709ddb63d9a75dc895
SHA1 347b21e94912e99fb312153948d1f2758454e136
SHA512 00eb0353b5568995dd359df63c166025f788a70d4616312c609bbad410faaca490fc84ea4379c3a3f2eaf50cabd97987e87d266f6a9c63786113ed44ed0dabf3
SSDEEP 12288:YOpgKjXa7yw83/HhJ0I1Rn7r0EQvqFg9iBUVC3noXA:YOpgKjqL83/IgYEQiFkMmEoX
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Executes dropped EXE 2 IoCs

pid	Process
936	Wawbmdknpbal.exe
1704	Wawbmdknpbal.exe

Deletes itself 1 IoCs

pid	Process
936	Wawbmdknpbal.exe

Loads dropped DLL 2 IoCs

pid	Process
1340	b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4.exe
1340	b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\Wawbmdknpbal.exe"	Wawbmdknpbal.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	Wawbmdknpbal.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\Wawbmdknpbal.exe"	Wawbmdknpbal.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run	Wawbmdknpbal.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 936	1340	b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4.exe	28
PID 1340 wrote to memory of 936	1340	b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4.exe	28
PID 1340 wrote to memory of 936	1340	b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4.exe	28
PID 1340 wrote to memory of 936	1340	b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4.exe	28
PID 936 wrote to memory of 1704	936	Wawbmdknpbal.exe	29
PID 936 wrote to memory of 1704	936	Wawbmdknpbal.exe	29
PID 936 wrote to memory of 1704	936	Wawbmdknpbal.exe	29
PID 936 wrote to memory of 1704	936	Wawbmdknpbal.exe	29

C:\Users\Admin\AppData\Local\Temp\b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4.exe
"C:\Users\Admin\AppData\Local\Temp\b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
  "C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe" "/rC:\Users\Admin\AppData\Local\Temp\b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4.exe"
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:936
- - C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
    "C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe" /w0000011C
    3⤵
    - Executes dropped EXE
    PID:1704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Wawbmdknpbal.exe

Path C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
Size 732KB
SHA256 b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4
MD5 a8e0d4771c1f71709ddb63d9a75dc895
SHA1 347b21e94912e99fb312153948d1f2758454e136
SHA512 00eb0353b5568995dd359df63c166025f788a70d4616312c609bbad410faaca490fc84ea4379c3a3f2eaf50cabd97987e87d266f6a9c63786113ed44ed0dabf3
SSDEEP 12288:YOpgKjXa7yw83/HhJ0I1Rn7r0EQvqFg9iBUVC3noXA:YOpgKjqL83/IgYEQiFkMmEoX
MD5 SHA1 SHA512 SSDEEP

Submit Download

Wawbmdknpbal.exe

Path C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
Size 732KB
SHA256 b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4
MD5 a8e0d4771c1f71709ddb63d9a75dc895
SHA1 347b21e94912e99fb312153948d1f2758454e136
SHA512 00eb0353b5568995dd359df63c166025f788a70d4616312c609bbad410faaca490fc84ea4379c3a3f2eaf50cabd97987e87d266f6a9c63786113ed44ed0dabf3
SSDEEP 12288:YOpgKjXa7yw83/HhJ0I1Rn7r0EQvqFg9iBUVC3noXA:YOpgKjqL83/IgYEQiFkMmEoX
MD5 SHA1 SHA512 SSDEEP

Submit Download

Wawbmdknpbal.exe

Path C:\Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
Size 732KB
SHA256 b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4
MD5 a8e0d4771c1f71709ddb63d9a75dc895
SHA1 347b21e94912e99fb312153948d1f2758454e136
SHA512 00eb0353b5568995dd359df63c166025f788a70d4616312c609bbad410faaca490fc84ea4379c3a3f2eaf50cabd97987e87d266f6a9c63786113ed44ed0dabf3
SSDEEP 12288:YOpgKjXa7yw83/HhJ0I1Rn7r0EQvqFg9iBUVC3noXA:YOpgKjqL83/IgYEQiFkMmEoX
MD5 SHA1 SHA512 SSDEEP

Submit Download

Wawbmdknpbal.exe

Path \Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
Size 732KB
SHA256 b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4
MD5 a8e0d4771c1f71709ddb63d9a75dc895
SHA1 347b21e94912e99fb312153948d1f2758454e136
SHA512 00eb0353b5568995dd359df63c166025f788a70d4616312c609bbad410faaca490fc84ea4379c3a3f2eaf50cabd97987e87d266f6a9c63786113ed44ed0dabf3
SSDEEP 12288:YOpgKjXa7yw83/HhJ0I1Rn7r0EQvqFg9iBUVC3noXA:YOpgKjqL83/IgYEQiFkMmEoX
MD5 SHA1 SHA512 SSDEEP

Submit Download

Wawbmdknpbal.exe

Path \Users\Admin\AppData\Roaming\Wawbmdknpbal.exe
Size 732KB
SHA256 b3530b7519660996d28eb31a8d5b585ec60601843c77dd9f2b712812c99843e4
MD5 a8e0d4771c1f71709ddb63d9a75dc895
SHA1 347b21e94912e99fb312153948d1f2758454e136
SHA512 00eb0353b5568995dd359df63c166025f788a70d4616312c609bbad410faaca490fc84ea4379c3a3f2eaf50cabd97987e87d266f6a9c63786113ed44ed0dabf3
SSDEEP 12288:YOpgKjXa7yw83/HhJ0I1Rn7r0EQvqFg9iBUVC3noXA:YOpgKjqL83/IgYEQiFkMmEoX
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/936-63-0x0000000000400000-0x00000000004D0000-memory.dmp

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memory/1340-54-0x0000000076411000-0x0000000076413000-memory.dmp

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memory/1340-55-0x0000000000400000-0x00000000004D0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads