732e56973b6efeb0609f8244e23eb931c9abe262d53146e3f75247ef9915275e

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 17:51

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General

Target

2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe
Size

44KB
MD5

5fb8efbfb2b1c38541952d2f15363067
SHA1

508f8dbf810e101931e98ee0b15e5840905ba578
SHA256

732e56973b6efeb0609f8244e23eb931c9abe262d53146e3f75247ef9915275e
SHA512

9debe3f51f03999764475f703caf10c9f7d546d57d32d6ea25a44e8dec520074aaa67c4454182f07c05bf7b886d53e38f826151ba7f306257714df67ab2bc375
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSD:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1984-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1984-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2264-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1984-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1984-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2264-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2264 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe

pid process

1984 2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2264	asih.exe

pid	process
1984	2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe

description	pid	process	target process
PID 1984 wrote to memory of 2264	1984	2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe	asih.exe
PID 1984 wrote to memory of 2264	1984	2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe	asih.exe
PID 1984 wrote to memory of 2264	1984	2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe	asih.exe
PID 1984 wrote to memory of 2264	1984	2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_5fb8efbfb2b1c38541952d2f15363067_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1984

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2264

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\asih.exe

Filesize
45KB

MD5
0a7faf6c5378cda434c16054dd0d578e

SHA1
4a0776a794a5460bcd9833e022d89cac3d5f7c6a

SHA256
d28f0a6e0e7e6ffd82c15b55b1b1be71642bc380ddd7fa7cd7f9556dd3fbacde

SHA512
f3bf9d7390b03872637c0f0156640060d3e5d1bcc30dfdf24426d2dad4f2d28c8a52a8f4a4fdffb618546a221da1a19f2717c0cce80a67f498d919373e16b4a6

Download Submit
memory/1984-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1984-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1984-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1984-4-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1984-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1984-15-0x0000000002800000-0x000000000280B000-memory.dmp

Filesize
44KB

Download
memory/2264-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2264-20-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2264-19-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download