c6e3420fb3fb07eb4c77246a7e6396182c7cdf02dce42af92f66adf0616910e4

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 02:40

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General

Target

2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe
Size

45KB
MD5

94d73982c99f2ebca9dc7dd3d2d8a873
SHA1

6dfdc38d9c9c1e077d7b3748aa00d1404df2cc48
SHA256

c6e3420fb3fb07eb4c77246a7e6396182c7cdf02dce42af92f66adf0616910e4
SHA512

94a53071438a6ebbb9cc79384d596723f6f3ae094367f89290a1bba9583717016c2f4c9c599048685b983c74f3c6d33041f83c2c0cc5352bac4e2c111ef5b249
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxQ:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X5

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

2080 hurok.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe

pid process

2072 2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_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:

2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exehurok.exe

pid process

2072 2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe
2080 hurok.exe

pid	process
2080	hurok.exe

pid	process
2072	2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe

pid	process
2072	2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe
2080	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe

description	pid	process	target process
PID 2072 wrote to memory of 2080	2072	2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe	hurok.exe
PID 2072 wrote to memory of 2080	2072	2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe	hurok.exe
PID 2072 wrote to memory of 2080	2072	2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe	hurok.exe
PID 2072 wrote to memory of 2080	2072	2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2072

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:2080

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
fa4ef9b1292ca2fd5e0d895242d3ca01

SHA1
bdfa8ff80cb91fbcc501a30221cc5c28a4b03edb

SHA256
62b63b98ed647263bc3be276c97cb584d5f2aade57871f50570b9de0d11d83b0

SHA512
bb8a6243060162cbe91896782a61ff20a45ec6d01ee71f83de6cfe4309bc9f4cfef7c344ccd05f8c90657c31cab4969632ba67f8f5670c75046b8f2cf48afef2

Download Submit
memory/2072-0-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2072-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2072-8-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2080-23-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download