ba3383d920dbc96e8d35a477a516d22ccf47a1649fd1db3c26423ef878aa982d

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 20:36

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General

Target

2024-05-22_83d8bdf74e1eecfb42caa1c8cc91d1cf_cryptolocker.exe
Size

76KB
MD5

83d8bdf74e1eecfb42caa1c8cc91d1cf
SHA1

a374141cdcd17aa260ecee96727efbb5ba8bed28
SHA256

ba3383d920dbc96e8d35a477a516d22ccf47a1649fd1db3c26423ef878aa982d
SHA512

624f14c7c7b7f513717d5392934aa482980c7ec78973cdfd4faaacda572eebf795f95aef2fe08cdf33db99ac79da23a9c49c0fa3f4f37d9fdea107d52cf13d36
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsoLkY:X6a+SOtEvwDpjBZYvQd2P

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

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

Detection of Cryptolocker Samples 1 IoCs

Processes:

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-22_83d8bdf74e1eecfb42caa1c8cc91d1cf_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-22_83d8bdf74e1eecfb42caa1c8cc91d1cf_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1168 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1168	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_83d8bdf74e1eecfb42caa1c8cc91d1cf_cryptolocker.exe

description	pid	process	target process
PID 2496 wrote to memory of 1168	2496	2024-05-22_83d8bdf74e1eecfb42caa1c8cc91d1cf_cryptolocker.exe	asih.exe
PID 2496 wrote to memory of 1168	2496	2024-05-22_83d8bdf74e1eecfb42caa1c8cc91d1cf_cryptolocker.exe	asih.exe
PID 2496 wrote to memory of 1168	2496	2024-05-22_83d8bdf74e1eecfb42caa1c8cc91d1cf_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_83d8bdf74e1eecfb42caa1c8cc91d1cf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_83d8bdf74e1eecfb42caa1c8cc91d1cf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2496

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1168

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
76KB

MD5
e6d8f74f6a17203d90f3b6881df90bb6

SHA1
7aebb13ad15355be835955cd7106688785166a52

SHA256
a6ea3162e8ad23e7202ecf0c1922e7c1cda120980e5e483244d4efc95c6ce2ad

SHA512
d308205e2027775bb938b1b95ec38a284455ba9e94b5f0c78aa33db7bc7b6750ea02fdbc1afa00711db05d943e3967aa0df23d99eaa51578fa1465623c43a4d2

Download Submit
memory/1168-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1168-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2496-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2496-1-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2496-8-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download