a8e47e51f8d88910a3a5338d170f13f2ce8786e368e3c6ae98ef16818b50d074

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 00:45

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General

Target

2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe
Size

65KB
MD5

770614f32fe6318c25fffb6ab0e18bca
SHA1

c436fcc5b57c45c1a54ba7290faeefc96c78f9b7
SHA256

a8e47e51f8d88910a3a5338d170f13f2ce8786e368e3c6ae98ef16818b50d074
SHA512

965f8aaee9d38efb2cb6600017224558f6ad35675ff140cb3b1ec7acb7354806d152a082d5979491caced548dc5a4ce3082783d08d34d69a7c3e60af9fc46f77
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299Np:aq7tdgI2MyzNORQtOflIwoHNV2XBFV77

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

2260 hurok.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe

pid process

1984 2024-05-23_770614f32fe6318c25fffb6ab0e18bca_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_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exehurok.exe

pid process

1984 2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe
2260 hurok.exe

pid	process
2260	hurok.exe

pid	process
1984	2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe

pid	process
1984	2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe
2260	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe

description	pid	process	target process
PID 1984 wrote to memory of 2260	1984	2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe	hurok.exe
PID 1984 wrote to memory of 2260	1984	2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe	hurok.exe
PID 1984 wrote to memory of 2260	1984	2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe	hurok.exe
PID 1984 wrote to memory of 2260	1984	2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1984

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:2260

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
66KB

MD5
cc86e734cbfe60783fe82b6a06329668

SHA1
67a1457861ce79b924984cfe2e5fbb68b5b3059d

SHA256
356ba52ae4c60dd61577ca771310c8dca36898a50113608aa9ec82f6b10b42cb

SHA512
2856fc49b526eea86ca118727e50a2f9b4559c3dd976aad34deeae71485d9a942fb722458e7d4f6277b35f7ab0bb074a1aa1421af568d2100218fe6ae070ec4e

Download Submit
memory/1984-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1984-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1984-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2260-23-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download