71866b6bcf97562dd6f51605446d130d3ca2b25d3a42dfbbf213bb3566e7aa2d

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21/05/2024, 08:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-21_b5825d068d37773614cb9be2f98c4bc4_cryptolocker.exe
Size

94KB
MD5

b5825d068d37773614cb9be2f98c4bc4
SHA1

c2d138355ad4f0932b46a3169983f75979cce8fc
SHA256

71866b6bcf97562dd6f51605446d130d3ca2b25d3a42dfbbf213bb3566e7aa2d
SHA512

229f0f77557a43a06b1255ece5f2de5179e8ff91fb21245362a7d103ae539ddd263ef6beabf03ff1fd6c074f3071aea440c497032733c2d2f44fbde497207994
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/k0:zCsanOtEvwDpjBv

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012350-11.dat	CryptoLocker_rule2
behavioral1/memory/1976-13-0x0000000002840000-0x0000000002850000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1976-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1256-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d000000012350-11.dat	CryptoLocker_set1
behavioral1/memory/1976-13-0x0000000002840000-0x0000000002850000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1976-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1256-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d000000012350-11.dat	UPX
behavioral1/memory/1976-13-0x0000000002840000-0x0000000002850000-memory.dmp	UPX
behavioral1/memory/1976-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1256-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1256	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1976	2024-05-21_b5825d068d37773614cb9be2f98c4bc4_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d000000012350-11.dat	upx
behavioral1/memory/1976-13-0x0000000002840000-0x0000000002850000-memory.dmp	upx
behavioral1/memory/1976-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1256-26-0x0000000000500000-0x0000000000510000-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 4 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 1256	1976	2024-05-21_b5825d068d37773614cb9be2f98c4bc4_cryptolocker.exe	28
PID 1976 wrote to memory of 1256	1976	2024-05-21_b5825d068d37773614cb9be2f98c4bc4_cryptolocker.exe	28
PID 1976 wrote to memory of 1256	1976	2024-05-21_b5825d068d37773614cb9be2f98c4bc4_cryptolocker.exe	28
PID 1976 wrote to memory of 1256	1976	2024-05-21_b5825d068d37773614cb9be2f98c4bc4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-21_b5825d068d37773614cb9be2f98c4bc4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_b5825d068d37773614cb9be2f98c4bc4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1256

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
95KB

MD5
6910ce3a12f3a656951e960716ddca1e

SHA1
36bf0285bedf0f66ccd75bb6f8ed07c8402dfd7d

SHA256
48b0a354460db6dc058c2f7bca5e03aa6602976b5a263b2fd4324bc6ae9ed178

SHA512
8a017fcf26f599985f8bb461e07a4c2bde6758a90ae2e326cd30803b8c95d0ab1669c1827993df0eba4230460f65a6e8894658ba61428f595dcec25d88fb9939

Download Submit
memory/1256-18-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1256-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1256-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1976-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1976-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1976-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1976-13-0x0000000002840000-0x0000000002850000-memory.dmp

Filesize
64KB

Download
memory/1976-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download