2e059c38db29ace841762e6731392d8d3a6b7cf4955918f4f0f3699e2cbafbd1

Analysis

max time kernel
93s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 15:40

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-02-28_5885b928f78b0b2b98e7860f9317891c_cryptolocker.exe
Size

105KB
MD5

5885b928f78b0b2b98e7860f9317891c
SHA1

0920b95fc08adff8ba9643933337e365f78500e2
SHA256

2e059c38db29ace841762e6731392d8d3a6b7cf4955918f4f0f3699e2cbafbd1
SHA512

8e86eea0aa3018e52cd73ea1e9746740c17181ca16165ecf92f684930891308bdc7afc9acbc221d873fccea6b0afe3e34055c7515f915c401c546d08ee493d5f
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWjy9PS:xj+VGMOtEvwDpjubwQEIiku6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3592-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e9a0-13.dat	CryptoLocker_rule2
behavioral2/memory/3592-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3340-52-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3592-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e9a0-13.dat	CryptoLocker_set1
behavioral2/memory/3592-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3340-52-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3592-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000300000001e9a0-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3592-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3340-52-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 2 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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-02-28_5885b928f78b0b2b98e7860f9317891c_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
3340	misid.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 3592 wrote to memory of 3340	3592	2024-02-28_5885b928f78b0b2b98e7860f9317891c_cryptolocker.exe	86
PID 3592 wrote to memory of 3340	3592	2024-02-28_5885b928f78b0b2b98e7860f9317891c_cryptolocker.exe	86
PID 3592 wrote to memory of 3340	3592	2024-02-28_5885b928f78b0b2b98e7860f9317891c_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-28_5885b928f78b0b2b98e7860f9317891c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_5885b928f78b0b2b98e7860f9317891c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3592
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3340

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
105KB

MD5
9aa9a393bcb8f0ecf62e579ad0a47263

SHA1
9f135dc1567bfdc180faf8eb4438dc2a44051852

SHA256
0ab36fa34a9229c59243f9f9a29cd8f3be72992db82b7ce7903eb0b875609ea2

SHA512
4f15baafe62ba2369e85891cfff0d4ca04e373b9bafec935a7ae8c7e15f63dcd4f06674e3e3cb0ee2ff5033585bbd4e287d5a3d4fb23dc4ab96900797f647abe

Download Submit
memory/3340-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3340-21-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3340-52-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3592-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3592-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/3592-2-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/3592-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3592-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download