23b837c04bba901cd7e754e5977b6b15652d6c35ab9e28bc23ee6f38908ff0fc

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 02:23

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General

Target

2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe
Size

73KB
MD5

120cf40975110d6da1ffaa4941acd20f
SHA1

4f6013f937c2c95f4ee834f6136e748d3c5d5dd2
SHA256

23b837c04bba901cd7e754e5977b6b15652d6c35ab9e28bc23ee6f38908ff0fc
SHA512

e45fca4bd6216ba25cadbf2793a774a493e34d3407e276f1a8cc522e3f47a46d660ab459c41fc94059c367e7fea9a0dcc491164f91a660fe7f735c46a5a3fe82
SSDEEP

768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMs2:u6QFElP6n+gWMOtEvwDpjJGYQb2

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

2812 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe

pid process

1088 2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2812	asih.exe

pid	process
1088	2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe

description	pid	process	target process
PID 1088 wrote to memory of 2812	1088	2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe	asih.exe
PID 1088 wrote to memory of 2812	1088	2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe	asih.exe
PID 1088 wrote to memory of 2812	1088	2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe	asih.exe
PID 1088 wrote to memory of 2812	1088	2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1088

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2812

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
73KB

MD5
f924fbb8e6a8d0ffd80e3253cd3d52e8

SHA1
1363c2258d36ce30252f862c0a72d4918d68fa2b

SHA256
b0cd2e8575fa92d62ae2a7cd4d38baa2de45444e95d8e0577e7626ea9aa18f72

SHA512
82ccbb6e8c937349d33bc847480a729e24b2f755a6d98aeb01c979729d0cfa94e410ddab874212a5ee0d2fcfa600370b6611a921aa0cae90458306b3237587ff

Download Submit
memory/1088-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1088-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1088-1-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2812-22-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2812-15-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download