baa1661ef0fb74775e7a5021aaf4a6c743ac775f4285e158f9d1d3cc65e2ec76

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 21:45

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General

Target

2024-03-07_eac429a798a111df3c486348376ddd18_cryptolocker.exe
Size

47KB
MD5

eac429a798a111df3c486348376ddd18
SHA1

f7c4093cf76302e9adfd8a90adf7cccb5b6b0b3f
SHA256

baa1661ef0fb74775e7a5021aaf4a6c743ac775f4285e158f9d1d3cc65e2ec76
SHA512

bb716b3462203a85b8052526019acc5f5db4f73cbf9601ae7d5c0cb62e3fa094286749a6d442c498b9d5e337c081a08e680cf3975d59cca833efa17dc7c8ff0f
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhTTHFACo:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+h

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2344-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b000000023161-13.dat	CryptoLocker_rule2
behavioral2/memory/2344-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2344-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000b000000023161-13.dat	CryptoLocker_set1
behavioral2/memory/2344-17-0x0000000000500000-0x000000000050B000-memory.dmp	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	2024-03-07_eac429a798a111df3c486348376ddd18_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4528	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 2344 wrote to memory of 4528	2344	2024-03-07_eac429a798a111df3c486348376ddd18_cryptolocker.exe	84
PID 2344 wrote to memory of 4528	2344	2024-03-07_eac429a798a111df3c486348376ddd18_cryptolocker.exe	84
PID 2344 wrote to memory of 4528	2344	2024-03-07_eac429a798a111df3c486348376ddd18_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-03-07_eac429a798a111df3c486348376ddd18_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_eac429a798a111df3c486348376ddd18_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4528

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
47KB

MD5
0a47163aca53707d4068edbf8fee77f7

SHA1
a757fff13668dc6f0507c847e0e41039ff343774

SHA256
9325ef7f933d5c6d60fe38272229d468fc56a60d89f3f2bc3c34fbb20cf0bd68

SHA512
a8e8e0f8a0df54d3141f67265c7e3db1a6aff8ab03224998fa7f1d00821fc566bf63e03e6be6165a7b6da201f697efec54e75250b5269387f1619fae46addcac

Download Submit
memory/2344-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2344-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2344-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2344-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2344-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download