ddf178c4604d051fe1f3a4d408086e904a97a822c13efcfb18ab309dd2944182

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 02:23

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General

Target

2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe
Size

45KB
MD5

10baee29ba1d8fc1a85b8e2a1ca5a97d
SHA1

e835581d0ab73e68003629e898e7373e35520134
SHA256

ddf178c4604d051fe1f3a4d408086e904a97a822c13efcfb18ab309dd2944182
SHA512

93c4a4308c8d1c5635e77253a6d614f42532017d88f3d6e648208f9d0ea3ae856517129f80535c91d8f97a3c92bca240bfc9152bb17c044e82c20ff947f23308
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx0:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

2980 hurok.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe

pid process

2412 2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of UnmapMainImage 2 IoCs

Processes:

2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exehurok.exe

pid process

2412 2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe
2980 hurok.exe

pid	process
2980	hurok.exe

pid	process
2412	2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe

pid	process
2412	2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe
2980	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe

description	pid	process	target process
PID 2412 wrote to memory of 2980	2412	2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe	hurok.exe
PID 2412 wrote to memory of 2980	2412	2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe	hurok.exe
PID 2412 wrote to memory of 2980	2412	2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe	hurok.exe
PID 2412 wrote to memory of 2980	2412	2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2412

C:\Users\Admin\AppData\Local\Temp\hurok.exe
"C:\Users\Admin\AppData\Local\Temp\hurok.exe"
2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2980

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\hurok.exe
Filesize
45KB

MD5
cc6a663e7be279b6c6e3486c3c345af8

SHA1
8b42309e7f3ecde137c59e47b03593ebc388d573

SHA256
8864dc8ba2ee460fd7dcd98b93c7903eb66979ce738a5b0411b5f901aba40c57

SHA512
a4bd1b963cf72a8adc2b165454338512b518a729a4aefeab0915d0cb22528a37e8e8b12e58b13a97fd8348146bec45d20f9a59e3a01c4ddfc14cf032bc0d9a4d

Download Submit
memory/2412-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2412-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2412-8-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2980-16-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download