7e058e0bfb2ea22ea4a03535f5073d1d28c4bde7ab18510a5bcfe7a723993a5e

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 20:24

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General

Target

2024-02-12_26401e8c58bd8491c365ff3bd53b4fdb_cryptolocker.exe
Size

38KB
MD5

26401e8c58bd8491c365ff3bd53b4fdb
SHA1

8f95d4abaee3036a46a801943564ff6d29950fd4
SHA256

7e058e0bfb2ea22ea4a03535f5073d1d28c4bde7ab18510a5bcfe7a723993a5e
SHA512

d0dbc81d8b11e571492ea3ebb795f574c4f628065e08c5dcb806150554b414706a99efbc6f3ebb4581ba258cae8a8c6d2cbf8d4ab427f2e47beefc9ede482d35
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HW1d:X6QFElP6n+gJQMOtEvwDpjBsYWf

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:

2024-02-12_26401e8c58bd8491c365ff3bd53b4fdb_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-12_26401e8c58bd8491c365ff3bd53b4fdb_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4076 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4076	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_26401e8c58bd8491c365ff3bd53b4fdb_cryptolocker.exe

description	pid	process	target process
PID 3416 wrote to memory of 4076	3416	2024-02-12_26401e8c58bd8491c365ff3bd53b4fdb_cryptolocker.exe	asih.exe
PID 3416 wrote to memory of 4076	3416	2024-02-12_26401e8c58bd8491c365ff3bd53b4fdb_cryptolocker.exe	asih.exe
PID 3416 wrote to memory of 4076	3416	2024-02-12_26401e8c58bd8491c365ff3bd53b4fdb_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_26401e8c58bd8491c365ff3bd53b4fdb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_26401e8c58bd8491c365ff3bd53b4fdb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3416

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:4076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
38KB

MD5
0ff1c5f2c1832d055048d3604fa6a565

SHA1
438e08cd8d75281c5737119b41d0f0fa5fedc463

SHA256
24f199705e02b0c071f84af399d45231c44c3c644176cca4fc979a525f3a0351

SHA512
85e35dae378eed2df956c0556cd218818c6989b5ee8973de39c3976688458a87ac048c4d18d9cd5b76307292c2615a2281706d151bc8e729a84ac5e7e33f905a

Download Submit
memory/3416-0-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3416-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3416-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4076-19-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4076-17-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download