60e286a686857db4406a9b4ff356fefe6a074942b7ca4a670bda7e7cd92f70d5

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 13:44

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General

Target

2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe
Size

80KB
MD5

be781e47ba551a56e25f87c1859f0345
SHA1

5edae0dda6a199e2f35c6325b8d87f778c3ee04f
SHA256

60e286a686857db4406a9b4ff356fefe6a074942b7ca4a670bda7e7cd92f70d5
SHA512

cbdbd2f57663fd1aa4c1976c84730c2a91e4da9f92043c100300368d30ec77581d874a590b4b54ef7bb6a538fbfc6289724b79ff55d831d62cf97a239fdd2f5c
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyTghK:zCsanOtEvwDpjc

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3576-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2
behavioral2/memory/3576-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4384-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4384-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3576-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_set1
behavioral2/memory/3576-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4384-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4384-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3576-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000400000001e980-13.dat	UPX
behavioral2/memory/3576-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4384-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4384-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4384	misid.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3576-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000400000001e980-13.dat	upx
behavioral2/memory/3576-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4384-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4384-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 3576 wrote to memory of 4384	3576	2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe	89
PID 3576 wrote to memory of 4384	3576	2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe	89
PID 3576 wrote to memory of 4384	3576	2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3576
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4384

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\misid.exe

Filesize
80KB

MD5
88f9b45324dedbcef5ccb066760e72bf

SHA1
0c7d18e66ea4c726a8394d050c8632592c5659dc

SHA256
ec38e49db749d13261425daa10b01761761528f4bcf67340eac62a0b43ddc7d1

SHA512
361ae0caafbdb63e1b6d4b0b154e5af090498e6fa5edb56feb53379a7819155e8263c9c64687cc9d81a1b7c55a610d3819c773e43bf0c3560362a2047ec3c598

Download Submit
memory/3576-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3576-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3576-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3576-3-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/3576-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4384-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4384-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4384-24-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4384-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download