39ebec5e1fecc3a7b34e7c68473d59f137c3b78fd5f84ad3860bac4bee28bca0

Analysis

max time kernel
146s
max time network
170s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/01/2024, 15:14

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-03_3f4fb282f915209d441677cc7fcdaaec_cryptolocker.exe
Size

74KB
MD5

3f4fb282f915209d441677cc7fcdaaec
SHA1

6eace95ce0a72e6972a39af18d08fac1dd79fef9
SHA256

39ebec5e1fecc3a7b34e7c68473d59f137c3b78fd5f84ad3860bac4bee28bca0
SHA512

17bc457051bc8476edd2bb1aa8cd3032375aa03e6b0975d7afa49485546f55b2abdbe8db908332a158b713aa0b1412fa0fb86d66e7cc7db915c6869175d4e38a
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdnD:T6a+rdOOtEvwDpjNtF

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1300	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2096	2024-01-03_3f4fb282f915209d441677cc7fcdaaec_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2096-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c0000000122e9-11.dat	upx
behavioral1/memory/2096-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1300-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1300-25-0x0000000000500000-0x0000000000510000-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 2096 wrote to memory of 1300	2096	2024-01-03_3f4fb282f915209d441677cc7fcdaaec_cryptolocker.exe	27
PID 2096 wrote to memory of 1300	2096	2024-01-03_3f4fb282f915209d441677cc7fcdaaec_cryptolocker.exe	27
PID 2096 wrote to memory of 1300	2096	2024-01-03_3f4fb282f915209d441677cc7fcdaaec_cryptolocker.exe	27
PID 2096 wrote to memory of 1300	2096	2024-01-03_3f4fb282f915209d441677cc7fcdaaec_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-01-03_3f4fb282f915209d441677cc7fcdaaec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-03_3f4fb282f915209d441677cc7fcdaaec_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1300

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
74KB

MD5
1570ff11aacd05fdae85b7b7aab12527

SHA1
68fa8197b98bec8231440c648d5a195f916536a3

SHA256
2f0a0ca65572f3323fb08fefa1e8f0cf4836980cee11480ef38e29915b12029a

SHA512
85bd0ae4438fc6f5e9faee0fe7528b5d340b18a9db8bfb45226fc2f3d3000d15f5b5be7ed9b3ce8123752893567b4bb1a948de9032dd034765367cdc0509318d

Download Submit
memory/1300-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1300-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1300-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2096-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2096-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2096-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2096-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2096-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download