4edaede13b6a1963c3676a1042c875a567acb52c097e33b8c74c81c8ca9f6283

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/03/2024, 06:06

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-10_861aaf20f307e44389f8b10d87dcb2cb_cryptolocker.exe
Size

118KB
MD5

861aaf20f307e44389f8b10d87dcb2cb
SHA1

f4569dfeb10ed33893e34a7800d59a47c7332c00
SHA256

4edaede13b6a1963c3676a1042c875a567acb52c097e33b8c74c81c8ca9f6283
SHA512

7b0efdedb9542868d1af695b090907671543e0ec8d5bf4f59499e18658aaa5f8c51c420ad04ec0ef883f1767407de19660ed5873953ebc3dc110a882adc52359
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01Qa6:z6a+CdOOtEvwDpjczE

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/552-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012254-11.dat	CryptoLocker_rule2
behavioral1/memory/552-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1676-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1676-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/552-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012254-11.dat	CryptoLocker_set1
behavioral1/memory/552-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1676-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1676-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/552-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012254-11.dat	UPX
behavioral1/memory/552-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1676-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1676-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1676	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
552	2024-03-10_861aaf20f307e44389f8b10d87dcb2cb_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/552-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012254-11.dat	upx
behavioral1/memory/552-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1676-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1676-26-0x0000000000500000-0x0000000000510000-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 552 wrote to memory of 1676	552	2024-03-10_861aaf20f307e44389f8b10d87dcb2cb_cryptolocker.exe	28
PID 552 wrote to memory of 1676	552	2024-03-10_861aaf20f307e44389f8b10d87dcb2cb_cryptolocker.exe	28
PID 552 wrote to memory of 1676	552	2024-03-10_861aaf20f307e44389f8b10d87dcb2cb_cryptolocker.exe	28
PID 552 wrote to memory of 1676	552	2024-03-10_861aaf20f307e44389f8b10d87dcb2cb_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-10_861aaf20f307e44389f8b10d87dcb2cb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_861aaf20f307e44389f8b10d87dcb2cb_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:552
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1676

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\asih.exe

Filesize
118KB

MD5
0f4047e465930803c9b39345a967d77f

SHA1
f223960c3c4545b18c4a0b261c57f04e73fb01d4

SHA256
7d6dc39af87b9e737743aa057ec6230dc2eac1662a61a311b9d0ed852646f162

SHA512
de5df4c05da00980b14af8fbd7ee7bac7318a413bff108c8881dc97058356e48ee25b51ab01355f629fbb5d1ecf1330cefd1064ac4109492f162fc4aedae2fe0

Download Submit
memory/552-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/552-1-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/552-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/552-9-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/552-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1676-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1676-18-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1676-21-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1676-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download