857e481e850abd67497b0dcb60477b5a744573222a9eeb929170106a5b79ae37

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
10-01-2024 05:50

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General

Target

2024-01-09_13bcd032c176e5d21e0ccf67458fb71d_cryptolocker.exe
Size

55KB
MD5

13bcd032c176e5d21e0ccf67458fb71d
SHA1

3e7d5838327b15a56e992421aca0135bfef8b8d4
SHA256

857e481e850abd67497b0dcb60477b5a744573222a9eeb929170106a5b79ae37
SHA512

91a0d6297dd8a94991a275e67f91252bb61ead3281daf3a8aca262354585dfaa4e4c60fbe2882a48c8704ab9fef8886b18d12e9a55f60be8891ee1f4190b026b
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFeV0ZOfcp5:zj+soPSMOtEvwDpj4y9

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1344	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2224	2024-01-09_13bcd032c176e5d21e0ccf67458fb71d_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2224-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000012238-11.dat	upx
behavioral1/memory/2224-13-0x0000000002800000-0x0000000002810000-memory.dmp	upx
behavioral1/memory/1344-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2224-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1344-27-0x0000000000500000-0x0000000000510000-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 2224 wrote to memory of 1344	2224	2024-01-09_13bcd032c176e5d21e0ccf67458fb71d_cryptolocker.exe	28
PID 2224 wrote to memory of 1344	2224	2024-01-09_13bcd032c176e5d21e0ccf67458fb71d_cryptolocker.exe	28
PID 2224 wrote to memory of 1344	2224	2024-01-09_13bcd032c176e5d21e0ccf67458fb71d_cryptolocker.exe	28
PID 2224 wrote to memory of 1344	2224	2024-01-09_13bcd032c176e5d21e0ccf67458fb71d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-09_13bcd032c176e5d21e0ccf67458fb71d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-09_13bcd032c176e5d21e0ccf67458fb71d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1344

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
55KB

MD5
c5a2e597d994a94812ff2b78be8cb26f

SHA1
fbf81f9dce0e645e9ed903f3a77d4e17a0ac358b

SHA256
321e552e46d5c01d3ae20519f25230a527856233380123d894874bc1c236a577

SHA512
9e6ef76933b5b82cd2486e44c4b0a12ae1e0860a3417099025a2ce2b34aa9129e912368f7c7682284c7b79ec87e71c124558a37c79ac7e79dbc9a97136aeff97

Download Submit
memory/1344-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1344-19-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/1344-20-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1344-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2224-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2224-1-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2224-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2224-4-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2224-13-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2224-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download