7571a1d3e61a9b403f1831147152af6403ff5e79780a4e4657015399a0fb0d9a

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
29/04/2024, 04:34

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General

Target

2024-04-29_54305a2dbe5d59cf0cb0a19a9de1ad58_cryptolocker.exe
Size

43KB
MD5

54305a2dbe5d59cf0cb0a19a9de1ad58
SHA1

307fc18497f6fdba54316f455cfb61fb7ebcf1c5
SHA256

7571a1d3e61a9b403f1831147152af6403ff5e79780a4e4657015399a0fb0d9a
SHA512

9b877964c087c6102b0d1fe5612798f1e3af3047d79de2ac20237171c13e5b224d4d35de3de6faa33443ad5ae349e395e226a995563670ea6a10c3b71bec7a51
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUb6:bm74zYcgT/Ekn0ryfjb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4356-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023b5f-13.dat	CryptoLocker_rule2
behavioral2/memory/1468-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4356-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1468-27-0x0000000008000000-0x000000000800D000-memory.dmp	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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-29_54305a2dbe5d59cf0cb0a19a9de1ad58_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1468	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 4356 wrote to memory of 1468	4356	2024-04-29_54305a2dbe5d59cf0cb0a19a9de1ad58_cryptolocker.exe	83
PID 4356 wrote to memory of 1468	4356	2024-04-29_54305a2dbe5d59cf0cb0a19a9de1ad58_cryptolocker.exe	83
PID 4356 wrote to memory of 1468	4356	2024-04-29_54305a2dbe5d59cf0cb0a19a9de1ad58_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-29_54305a2dbe5d59cf0cb0a19a9de1ad58_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_54305a2dbe5d59cf0cb0a19a9de1ad58_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4356
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1468

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
43KB

MD5
2affd15403691f2f0b652703355494a8

SHA1
5223d750f776af2020c180d1225252b4f766a130

SHA256
e3120ccff8fc7496685c7cd921e0e447b87065851db34c50309715e965eafd5c

SHA512
e62bc717bd6964738369271cc80e1e87cfdf84e600a6ce5e5e6eaec45484cc7eb7cfa5e8f1adce3194784890f658eba1c364d2a2b3af8a47cb9fd601ff5c4369

Download Submit
memory/1468-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1468-20-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1468-26-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1468-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4356-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4356-1-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4356-2-0x00000000023C0000-0x00000000023C6000-memory.dmp

Filesize
24KB

Download
memory/4356-9-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4356-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download