27e09521f52f0cf0d391dee6a7aa24b53f98c1676656efcb2536869d95e0e66f

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 14:07

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General

Target

2024-02-21_c7fc48add7e5d010c1b3b551ba3c7663_cryptolocker.exe
Size

37KB
MD5

c7fc48add7e5d010c1b3b551ba3c7663
SHA1

374ba1f016f0296b74e6dda1862f54c992d69d6c
SHA256

27e09521f52f0cf0d391dee6a7aa24b53f98c1676656efcb2536869d95e0e66f
SHA512

ae775b04984af78f9aa209968c161e4ac15131ecc07c7fd74590ee436d99bcdb1f5f0515086e0d6d7bec105e7aeaabaa52cf998cd632ae576a72ff1cd7f3422c
SSDEEP

384:bgX4uGLLQRcsdeQ7/nQu63Ag7YmecFanrlwfjDUkKDfWf0w3sp8u5cZnfX6:bgX4zYcgTEu6QOaryfjqDDw3sCu5mX6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231f1-12.dat	CryptoLocker_rule2

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-1-5-21-2200714112-3788720386-2559682836-1000\Control Panel\International\Geo\Nation	2024-02-21_c7fc48add7e5d010c1b3b551ba3c7663_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4900	hasfj.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 2032 wrote to memory of 4900	2032	2024-02-21_c7fc48add7e5d010c1b3b551ba3c7663_cryptolocker.exe	79
PID 2032 wrote to memory of 4900	2032	2024-02-21_c7fc48add7e5d010c1b3b551ba3c7663_cryptolocker.exe	79
PID 2032 wrote to memory of 4900	2032	2024-02-21_c7fc48add7e5d010c1b3b551ba3c7663_cryptolocker.exe	79

C:\Users\Admin\AppData\Local\Temp\2024-02-21_c7fc48add7e5d010c1b3b551ba3c7663_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_c7fc48add7e5d010c1b3b551ba3c7663_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4900

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\hasfj.exe

Filesize
38KB

MD5
c8f8df68c18ac536936d9fe9a39be16b

SHA1
a727483545ba7f645056241ecafd8791aad2f38e

SHA256
26fac4a54da796b48349eca854c61a9c214491fbda6a96f26df0fddf777a0322

SHA512
547da34dea857b47f0c3f830ea4712a1bbebcb3650ed92e38fe809d2f5999f7fdbddbd5c9ef374017b127e8080cdbb566f6981b83305a13e44d79a3275f125b1

Download Submit
memory/2032-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/2032-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/2032-2-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4900-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4900-23-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download