3f5a8bc006cc90ddd7c8735790ad443bfbed3ae9d3027067b3a5f3099a85fab9

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 20:28

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General

Target

2024-04-28_8ca08e1d133fff1715a5cba4e5ebfffd_cryptolocker.exe
Size

40KB
MD5

8ca08e1d133fff1715a5cba4e5ebfffd
SHA1

5e15d40099b4eeba266685f89f9244a2f174d89a
SHA256

3f5a8bc006cc90ddd7c8735790ad443bfbed3ae9d3027067b3a5f3099a85fab9
SHA512

4cdce6824e7a8fc06a7dad0b1030177fd8e810ab762347d506331f8564dd14d1229c4e1096f7b09ff6405469c001e88af835696ffb48a584dc66413d2771947f
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfrs:X6QFElP6n+gJQMOtEvwDpjBsYK6rs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b3b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b3b-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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-04-28_8ca08e1d133fff1715a5cba4e5ebfffd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
856	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 556 wrote to memory of 856	556	2024-04-28_8ca08e1d133fff1715a5cba4e5ebfffd_cryptolocker.exe	84
PID 556 wrote to memory of 856	556	2024-04-28_8ca08e1d133fff1715a5cba4e5ebfffd_cryptolocker.exe	84
PID 556 wrote to memory of 856	556	2024-04-28_8ca08e1d133fff1715a5cba4e5ebfffd_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-28_8ca08e1d133fff1715a5cba4e5ebfffd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_8ca08e1d133fff1715a5cba4e5ebfffd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:556
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:856

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
40KB

MD5
a32c47392d4c5d6de8c2d5d6c1284d5c

SHA1
77ad0d94c8f437c9ce577729fabc0f905c8ba83b

SHA256
e8e2ec44b367cd2224b88bc194a6c721dbde7da19e84f8232555ac7f079059c6

SHA512
5e669097ed1773be66ad43926505e49d28165f99ab8508d7d919403c8cb5e1659d636e23fd70ef52990937bce4015de55147450e9a487f68b5cda2a754f304f0

Download Submit
memory/556-0-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/556-1-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download
memory/556-8-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/856-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/856-23-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download