d07b141791a9037b69d166f9335772a56efaabf57df75cbbdf50fc5583efbdfc

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 03:49

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General

Target

2024-03-28_79ac542970e1f4649772915ceb1decfc_cryptolocker.exe
Size

40KB
MD5

79ac542970e1f4649772915ceb1decfc
SHA1

093b74b31bc18dd679635b45b56b1eb5cf97955c
SHA256

d07b141791a9037b69d166f9335772a56efaabf57df75cbbdf50fc5583efbdfc
SHA512

359fd3bfa058c01867f240d00214a64e47045a2f94b84eafe12bcff8c73058977da34671e1166ea24f2d4d3ebfed69815bf8b3d8232342bde7490a4e24fdd071
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAp:bCDOw9aMDooc+vAp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/1924-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012255-11.dat	CryptoLocker_rule2
behavioral1/memory/1924-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1648-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1924-12-0x0000000000520000-0x000000000052A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1648-27-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1648	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1924	2024-03-28_79ac542970e1f4649772915ceb1decfc_cryptolocker.exe

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 1924 wrote to memory of 1648	1924	2024-03-28_79ac542970e1f4649772915ceb1decfc_cryptolocker.exe	28
PID 1924 wrote to memory of 1648	1924	2024-03-28_79ac542970e1f4649772915ceb1decfc_cryptolocker.exe	28
PID 1924 wrote to memory of 1648	1924	2024-03-28_79ac542970e1f4649772915ceb1decfc_cryptolocker.exe	28
PID 1924 wrote to memory of 1648	1924	2024-03-28_79ac542970e1f4649772915ceb1decfc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_79ac542970e1f4649772915ceb1decfc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_79ac542970e1f4649772915ceb1decfc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1648

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\lossy.exe

Filesize
40KB

MD5
a61aaa1137f4653f4be67c46ec32623d

SHA1
85111311773e023cc523e822ab13792426287ce4

SHA256
b632ffd70aff5987fef8344d21b99a5dc5dcb44ad63ce54212c27d291ae5433d

SHA512
92abbade09c8078a74bd89f3454d85e3fdf8199f00a4f9b6f4134808efbbf1eb9209053cfdb00a420ca04780002ae34e5a8df4ad5692a0ff620a552b8cf3a703

Download Submit
memory/1648-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1648-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1648-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1648-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1924-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1924-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1924-3-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1924-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1924-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1924-12-0x0000000000520000-0x000000000052A000-memory.dmp

Filesize
40KB

Download