d1a0f26c8238377b3883a74aadc314cd43a3d7b9711bbb7707ddb3868c9f7d9f

Analysis

max time kernel
133s
max time network
142s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-02-2024 17:47

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General

Target

2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe
Size

37KB
MD5

bd491cc2ee163ea207be92f0f74881c7
SHA1

fa80a26946678c3df22db3edda5875a84e4a72ba
SHA256

d1a0f26c8238377b3883a74aadc314cd43a3d7b9711bbb7707ddb3868c9f7d9f
SHA512

354684de46817132c1d3b532db0bbcbac185f37699a90920b87238e6dbb4c473840dc3cd0cdc83bd7aa88958b602e5aa837f730f717fa586b53505752a99b1d8
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkCulT/:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkD/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1796-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1796-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2324-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1796-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1796-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2324-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2324 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe

pid process

1796 2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2324	asih.exe

pid	process
1796	2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe

description	pid	process	target process
PID 1796 wrote to memory of 2324	1796	2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe	asih.exe
PID 1796 wrote to memory of 2324	1796	2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe	asih.exe
PID 1796 wrote to memory of 2324	1796	2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe	asih.exe
PID 1796 wrote to memory of 2324	1796	2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_bd491cc2ee163ea207be92f0f74881c7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1796

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2324

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
38KB

MD5
8efe0ae9f522d129e7d8a7cfe2865dae

SHA1
1e8420e6b0cc9c61ffd5529c61ca39036a596297

SHA256
0f6a4c7047a8536550b34749360cdb9c06acc16c2fbd8af5c22d8db2d95bc12a

SHA512
4b2da72b08864fb639304714e9e117cd884645b7cf40140638480853e47fb32d309ea755d8b812fdaad94feddc3352339807bf46dd2688263b2e8f5f6a786796

Download Submit
memory/1796-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1796-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1796-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1796-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1796-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2324-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2324-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download