f3db7ec4108eee5e56721a51a662303b5d2daf44a3ce5281679ba2532a2834a8

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
11/01/2024, 05:49

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General

Target

2024-01-10_53c48e3abb09e3b5d88c7c14a3d2ef88_cryptolocker.exe
Size

92KB
MD5

53c48e3abb09e3b5d88c7c14a3d2ef88
SHA1

09bb97fadb9be521fbd62ca797c54c8cf3fafb61
SHA256

f3db7ec4108eee5e56721a51a662303b5d2daf44a3ce5281679ba2532a2834a8
SHA512

25cb254cbb1620516436a36ceef642f7c9e73db916cf58868f39b0be3f1e029f1568aa6ea5dea2cb57ade0a79705431acda59f5f37df4aa19532f99a1216847d
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp01W:AnBdOOtEvwDpj6zI

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2172	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1904	2024-01-10_53c48e3abb09e3b5d88c7c14a3d2ef88_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1904-8-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c00000001224c-25.dat	upx
behavioral1/memory/2172-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1904-13-0x0000000002BC0000-0x0000000002BCF000-memory.dmp	upx
behavioral1/memory/2172-27-0x0000000000500000-0x000000000050F000-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 1904 wrote to memory of 2172	1904	2024-01-10_53c48e3abb09e3b5d88c7c14a3d2ef88_cryptolocker.exe	14
PID 1904 wrote to memory of 2172	1904	2024-01-10_53c48e3abb09e3b5d88c7c14a3d2ef88_cryptolocker.exe	14
PID 1904 wrote to memory of 2172	1904	2024-01-10_53c48e3abb09e3b5d88c7c14a3d2ef88_cryptolocker.exe	14
PID 1904 wrote to memory of 2172	1904	2024-01-10_53c48e3abb09e3b5d88c7c14a3d2ef88_cryptolocker.exe	14

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
1⤵
- Executes dropped EXE
PID:2172

C:\Users\Admin\AppData\Local\Temp\2024-01-10_53c48e3abb09e3b5d88c7c14a3d2ef88_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-10_53c48e3abb09e3b5d88c7c14a3d2ef88_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1904

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

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Downloads

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

Filesize
93KB

MD5
6e05becf31ecc8f236440760605cd8c4

SHA1
b77a535924f00addf06751d1787f617f25d18561

SHA256
3182e72a36357ccfdb09868e8d793fac756821917f4d24904f08e489a1a052c8

SHA512
aa856994b48be130f73d4bdcb0e59c9a3ae53dcaacdac5e88caf4f7d32ea8501336b2b22cbf415cc1a40fc93b69e2472cf49ea55bcc43b047121448d5aea5ab2

Download Submit
memory/1904-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1904-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1904-13-0x0000000002BC0000-0x0000000002BCF000-memory.dmp

Filesize
60KB

Download
memory/1904-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1904-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2172-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2172-26-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2172-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2172-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download