1b3bedef4dd5802ac71f1cca549dc945f2b15e924d6fce505518a0c6850f69f1

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04-04-2024 16:36

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General

Target

2024-04-04_3d06d2c7ded8d793e91aefef31935d05_cryptolocker.exe
Size

164KB
MD5

3d06d2c7ded8d793e91aefef31935d05
SHA1

6d702914996e5a555ed119831b06af19d517ed93
SHA256

1b3bedef4dd5802ac71f1cca549dc945f2b15e924d6fce505518a0c6850f69f1
SHA512

52ded0ed1e0ae8d566d4aca8fc94d90d8c2c73fcefb69e7f89a73e94282068082397da4e75fbd9b187a97de9f2c398ac8c2183ed08e6a300d30767586684a723
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgp699GNtL1emEV:u6a++OtEvwDpj6zf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231fe-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231fe-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-04-04_3d06d2c7ded8d793e91aefef31935d05_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3696	asih.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 3696	3036	2024-04-04_3d06d2c7ded8d793e91aefef31935d05_cryptolocker.exe	84
PID 3036 wrote to memory of 3696	3036	2024-04-04_3d06d2c7ded8d793e91aefef31935d05_cryptolocker.exe	84
PID 3036 wrote to memory of 3696	3036	2024-04-04_3d06d2c7ded8d793e91aefef31935d05_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-04_3d06d2c7ded8d793e91aefef31935d05_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-04_3d06d2c7ded8d793e91aefef31935d05_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3696

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
164KB

MD5
01c5db78aab2463493c0dbdbf79e6298

SHA1
a9a05c0d3e9cf800ffad767ac05fc83245d3cad4

SHA256
1070aa24fbec762388a93ed722f1c400ad55cfef6a58011e65a92e07185cddaa

SHA512
4f52faccc51b4ccb3a34ae436efb5392d529148738241e2a72894f8af6322fc7008c5a58bf66e1930882c7381f64db55f7c70bdba9cf5a9cc16b12b696eefbed

Download Submit
memory/3036-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3036-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3036-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/3696-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3696-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download