711116df3c0bfe2d3095f7fda18d1d8c81d5304e9611feaaecca9951f2ae6c22

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 15:38

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General

Target

2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe
Size

50KB
MD5

7b7f7551062c8ddacd2338b8325d28be
SHA1

b8cc01f46c5eb5fe2baf04f82bd38d180f9e8b37
SHA256

711116df3c0bfe2d3095f7fda18d1d8c81d5304e9611feaaecca9951f2ae6c22
SHA512

7ce79337344c7f5d5abe6fe07fef6ca2af10a1ac20e3f89dd53f228e4fb337b9606a99e4d418ae3ffcbd9905a4243e9b362e1773642a6704d1490b733e25bc6c
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRx:79mqyNhQMOtEvwDpjBxe8TpXRx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3016-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/3016-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2792-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3016-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/3016-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2792-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2792 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe

pid process

3016 2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2792	asih.exe

pid	process
3016	2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe

description	pid	process	target process
PID 3016 wrote to memory of 2792	3016	2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe	asih.exe
PID 3016 wrote to memory of 2792	3016	2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe	asih.exe
PID 3016 wrote to memory of 2792	3016	2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe	asih.exe
PID 3016 wrote to memory of 2792	3016	2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_7b7f7551062c8ddacd2338b8325d28be_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3016

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2792

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

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
50KB

MD5
0d220fde98720e23eb184da43ddfdf00

SHA1
32574fd9fc0c7602d3964c289ffb161fb3b24ec0

SHA256
99882eeac55e9b9478929bb2437ea668bd092bee68c46f811f4d8f9adb03a4d9

SHA512
968e88f4907fa9976301c0e8226304f519a1222169974ca07a671c5bb498a5957d7a7ca049bb06c1523e21ba36d0fdb59c4715f9de6b623f2b94f0cdbd814805

Download Submit
memory/2792-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2792-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2792-25-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3016-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3016-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3016-2-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/3016-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3016-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download