84193878a7383136f4ed75665b338861f941b16c1fd90f89c81c2f33d626252b

Analysis

max time kernel
151s
max time network
151s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
07-01-2024 12:15

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General

Target

2024-01-06_b7b7808d25be1e114462e7643789d4cc_cryptolocker.exe
Size

59KB
MD5

b7b7808d25be1e114462e7643789d4cc
SHA1

bcb6ae6ed6c17b17cc4ccbf8ac2bb00bb600e25e
SHA256

84193878a7383136f4ed75665b338861f941b16c1fd90f89c81c2f33d626252b
SHA512

37fa07d62c2ee74287f005f98b732c95009a133516184a08659b4208a3690e82077ed96eb90ab475ee5c393d46deeda5625e120d6d6337516330a6708ec12ad9
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZa:zj+soPSMOtEvwDpj4kpmeLm0

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2740	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1104	2024-01-06_b7b7808d25be1e114462e7643789d4cc_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1104-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000012262-11.dat	upx
behavioral1/memory/1104-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2740-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2740-26-0x0000000000500000-0x0000000000510000-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 1104 wrote to memory of 2740	1104	2024-01-06_b7b7808d25be1e114462e7643789d4cc_cryptolocker.exe	28
PID 1104 wrote to memory of 2740	1104	2024-01-06_b7b7808d25be1e114462e7643789d4cc_cryptolocker.exe	28
PID 1104 wrote to memory of 2740	1104	2024-01-06_b7b7808d25be1e114462e7643789d4cc_cryptolocker.exe	28
PID 1104 wrote to memory of 2740	1104	2024-01-06_b7b7808d25be1e114462e7643789d4cc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-06_b7b7808d25be1e114462e7643789d4cc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-06_b7b7808d25be1e114462e7643789d4cc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1104
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2740

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

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

Filesize
60KB

MD5
7cb9350789ec70cf6920a5278e197912

SHA1
60b9ee2a900aac4d676825c15d2c8ab7e946d3b1

SHA256
975f45acb2989ae5e817c1b60b03e1206563843a7017863a57ecfbb0709c455d

SHA512
00c1fdb97c7b927e28099af9417acc61ba0a42e221569f7b937144dd389be5d8505ebc0f2c46ee10381606516b1ebe3a17404bdaf4aa2bf6bd1ebb53d3d5f7ba

Download Submit
memory/1104-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1104-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1104-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1104-3-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1104-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2740-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2740-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2740-20-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2740-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download