40f855d6e9c53d9ffc19ea224b279ec14af38b549453bf61646cf688da09043e

Analysis

max time kernel
144s
max time network
162s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/01/2024, 15:13

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General

Target

2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe
Size

88KB
MD5

10cafc2bbb00eec3d59ae890c9d9522b
SHA1

002dda9ff12082f020910c138b7bf2a4e34b073b
SHA256

40f855d6e9c53d9ffc19ea224b279ec14af38b549453bf61646cf688da09043e
SHA512

1bca4a670fb8b572eab4cffb6ce24719f8913816a279a9e46528b6fc9f2726916f255eb01f734ef02811258bd6e939f73673b32230e0d0c0a4d2f614f2684ac3
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRMy87vg:zCsanOtEvwDpjI

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2640	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2472	2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2472-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b00000001225c-11.dat	upx
behavioral1/memory/2472-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2640-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2640-26-0x0000000000500000-0x0000000000510000-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 2472 wrote to memory of 2640	2472	2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe	28
PID 2472 wrote to memory of 2640	2472	2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe	28
PID 2472 wrote to memory of 2640	2472	2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe	28
PID 2472 wrote to memory of 2640	2472	2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2640

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
88KB

MD5
524cbfd9a6e11b55108fc2cd65f82d29

SHA1
029eb15651c862ff0c7a5cc09019e633e2477f5f

SHA256
fb0e7a315d2c933fb2e37d754b685d384bf87c19c2f7d0c4a85d02a60f8c0b80

SHA512
ab4a5f97b42b79a61f3552cd7ba03dc8d98ee705de19d7c3eb105d0aa82edec78d3d52de2e8d3ca75e5ae4c2f8513506062cf9323dd46e3d0f8247acc49dc531

Download Submit
memory/2472-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2472-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2472-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2472-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2472-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2640-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2640-19-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2640-18-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2640-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download