19be63a4734058e97352c1fb794937a9733a4ba9f68943fe6a6d2c1f3f60642a

Analysis

max time kernel
150s
max time network
155s
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_0972385c4e5d2601419fb25b1405fc66_cryptolocker.exe
Size

88KB
MD5

0972385c4e5d2601419fb25b1405fc66
SHA1

31022e5c04eede6bc3ed4e26d3d0cb600a126e65
SHA256

19be63a4734058e97352c1fb794937a9733a4ba9f68943fe6a6d2c1f3f60642a
SHA512

92aea36233f055a965e1799537268b71b289803829ef567f3a7ddf8b4005afbbc19f28ebe6ac99f63c7f570cb6ad9266aaa0ce01ba93b1fe2bf25db32c669fed
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRMy874:zCsanOtEvwDpj4

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2720	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2336	2024-01-03_0972385c4e5d2601419fb25b1405fc66_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001225a-11.dat	upx
behavioral1/memory/2336-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2720-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2720-25-0x0000000000500000-0x0000000000510000-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 2336 wrote to memory of 2720	2336	2024-01-03_0972385c4e5d2601419fb25b1405fc66_cryptolocker.exe	28
PID 2336 wrote to memory of 2720	2336	2024-01-03_0972385c4e5d2601419fb25b1405fc66_cryptolocker.exe	28
PID 2336 wrote to memory of 2720	2336	2024-01-03_0972385c4e5d2601419fb25b1405fc66_cryptolocker.exe	28
PID 2336 wrote to memory of 2720	2336	2024-01-03_0972385c4e5d2601419fb25b1405fc66_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-03_0972385c4e5d2601419fb25b1405fc66_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-03_0972385c4e5d2601419fb25b1405fc66_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2720

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
2d359bf074d48439c6051af09f733109

SHA1
a160c8167fcda4e00ed918c1ee5db04fe7cf1685

SHA256
683a701e3a7c8fff4241bc164c118118aeef0177f8c8963721f602dba31e6314

SHA512
0551fd0bf70cf54c7441d82e4bbd5f95172a3608d9806c35f0aeb29394a8d662278063960f36555161ad1588ad9579273317b8ea25e24e032f1b48b22409b6e2

Download Submit
memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2336-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2336-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2336-3-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2336-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2720-18-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2720-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2720-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download