5fb708693db81c339d60152f304c56b58fa274f63af4d264ac8c4cb6ea933fea

Analysis

max time kernel
148s
max time network
153s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 01:23

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General

Target

2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe
Size

44KB
MD5

2e819c9f484c0836db14b1da15f3bbe5
SHA1

22b7e9281ce77d33e6a17905fc02b0bfd56f0e4d
SHA256

5fb708693db81c339d60152f304c56b58fa274f63af4d264ac8c4cb6ea933fea
SHA512

a24852cbf9f7fa8db70417bdd6b3ee7b2e0faf0694e9362a804063b65c5199f62650c7abe9e4d51e2da5966d90cfba129b6d8e351c65915a95cf8f683ad08129
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxg:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xx

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

2668 hurok.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe

pid process

2656 2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_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_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exehurok.exe

pid process

2656 2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe
2668 hurok.exe

pid	process
2668	hurok.exe

pid	process
2656	2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe

pid	process
2656	2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe
2668	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe

description	pid	process	target process
PID 2656 wrote to memory of 2668	2656	2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe	hurok.exe
PID 2656 wrote to memory of 2668	2656	2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe	hurok.exe
PID 2656 wrote to memory of 2668	2656	2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe	hurok.exe
PID 2656 wrote to memory of 2668	2656	2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2656

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:2668

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
7e1d9b5d89ab0c293f34abf6bf6d749f

SHA1
77dde26b8a4b6c4b7a39c460ce54e5c16ab204ac

SHA256
a6bec7f5b131fb1f50560d641e87dead110788e2c0e103a818c11ccfbca4298e

SHA512
bbb0ffca657b8687030f086f725282888b3d14c76ccd21c4ace9f497367ba2ba6aa4fee6558319461dac89f3dfdfbcc5174c8a7016897b510af9b9c73e4e7767

Download Submit
memory/2656-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2656-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2656-8-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2668-23-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download