817419c99ed6c07c846453a45603d1854cc03d979ac0f6d87a7f2705a683a51e

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 02:31

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General

Target

2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe
Size

96KB
MD5

4a5b0e414f3f6a587cf94d91c7ec4d76
SHA1

91250a97edd84196cf152474db237f768f75555c
SHA256

817419c99ed6c07c846453a45603d1854cc03d979ac0f6d87a7f2705a683a51e
SHA512

326fcdcbaa34238c37a665d4606c1a3d2e906b0a49af3eecbdc0ba28413971628259e5b5726719cb5473f03a0acc39ac4f3c2f7876a71c9390d5d158880d5e55
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpT:V6a+pOtEvwDpjtzo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2548 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe

pid process

2932 2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2548	asih.exe

pid	process
2932	2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe

description	pid	process	target process
PID 2932 wrote to memory of 2548	2932	2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe	asih.exe
PID 2932 wrote to memory of 2548	2932	2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe	asih.exe
PID 2932 wrote to memory of 2548	2932	2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe	asih.exe
PID 2932 wrote to memory of 2548	2932	2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_4a5b0e414f3f6a587cf94d91c7ec4d76_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2932

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2548

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\asih.exe
Filesize
97KB

MD5
ef9c10481fa7f7163c0d8c9be140e7f0

SHA1
308c66343b9754f0a7873a9b8f65cc179e8bf7f0

SHA256
14d63044c04bea7c211684244e3e059a2b679f53789e3c83e6877533734721bb

SHA512
33a3205a5ebbff9fc7c165a4e3bed27f3c7a3df6af304c4f3aa15211b94bf483abf59cd4e494fde502cc0c1b6e280429b9d5b34c8531a14652bab985cc2c9aa4

Download Submit
memory/2548-15-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2548-22-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2932-0-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2932-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2932-8-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download