eb7de0322b5364410bfd36d05f06bcaef9a1293290bec9691772d7b833feadc4

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 01:01

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General

Target

2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe
Size

53KB
MD5

ff8833aa1a3fd994c6c87abc6d2cbff6
SHA1

12a27833939746a2b4e53affe51e11dde485cda3
SHA256

eb7de0322b5364410bfd36d05f06bcaef9a1293290bec9691772d7b833feadc4
SHA512

bb31bb9f440365d174c920eaa59f9358ac470037dce419c25e50e2b4ea842d191aed70f3d89a1fa59429cd37ee94a923d9268730071b72f09d9c043677a7c3c9
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKx6x:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7+

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

2184 hurok.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe

pid process

2956 2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_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_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exehurok.exe

pid process

2956 2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe
2184 hurok.exe

pid	process
2184	hurok.exe

pid	process
2956	2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe

pid	process
2956	2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe
2184	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe

description	pid	process	target process
PID 2956 wrote to memory of 2184	2956	2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe	hurok.exe
PID 2956 wrote to memory of 2184	2956	2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe	hurok.exe
PID 2956 wrote to memory of 2184	2956	2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe	hurok.exe
PID 2956 wrote to memory of 2184	2956	2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_ff8833aa1a3fd994c6c87abc6d2cbff6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2956

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:2184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
53KB

MD5
b72f4695ea074ecb293989ac7bac7cb1

SHA1
efea11e9ac92b6caaf57801d423834e34c7c3244

SHA256
8dd5019125a96d8cc3c748ce1e96ac928c1f56689a8a988b35ba44ba6ad718a3

SHA512
3cd509128b49b412974b2bdaa934df1849e7b62865f9cc1ee88759a107809c1382618d9a1223711b5ca2c9066bc979e75f68b11d78415f7682b5458e2d9a6ac0

Download Submit
memory/2184-23-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2956-0-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2956-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2956-8-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download