799a265a1d5a18759144cc95f539daf1106593ca8341e5a5497c19c29a52ca49

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
28-05-2024 06:58

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General

Target

2024-05-28_e91ac2f686098e762d5a26c7cdabc5ef_cryptolocker.exe
Size

54KB
MD5

e91ac2f686098e762d5a26c7cdabc5ef
SHA1

a81da7f1d5c6866c780b447c028f913624187711
SHA256

799a265a1d5a18759144cc95f539daf1106593ca8341e5a5497c19c29a52ca49
SHA512

9aa365303f91ac40aa4fb9c04aebcdabbd84fe153662b9e62937c23531003f0645d26ba03614f2411b5b642f36460545bb05a1620e85885ef5875a84314f18c2
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcaTIE:X6QFElP6n+gJBMOtEvwDpjBtExml/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d0000000122eb-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000d0000000122eb-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1400	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2416	2024-05-28_e91ac2f686098e762d5a26c7cdabc5ef_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 2416 wrote to memory of 1400	2416	2024-05-28_e91ac2f686098e762d5a26c7cdabc5ef_cryptolocker.exe	28
PID 2416 wrote to memory of 1400	2416	2024-05-28_e91ac2f686098e762d5a26c7cdabc5ef_cryptolocker.exe	28
PID 2416 wrote to memory of 1400	2416	2024-05-28_e91ac2f686098e762d5a26c7cdabc5ef_cryptolocker.exe	28
PID 2416 wrote to memory of 1400	2416	2024-05-28_e91ac2f686098e762d5a26c7cdabc5ef_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-28_e91ac2f686098e762d5a26c7cdabc5ef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_e91ac2f686098e762d5a26c7cdabc5ef_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1400

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\asih.exe

Filesize
54KB

MD5
94dcb8bc4f81d0e27268c6365bc5489e

SHA1
7e4f04e070c1f72d72d4953ded3dccdecd6931e2

SHA256
3b34a9a54f8b5e27079cf2172fa33a449bc002aac9876ba349df1c5bcb594657

SHA512
790a0acdd78a087b1610d9dcea66a72fe83628ebdb079540d805568ed63d43f2c3b1d9c75b4695228ba443d056f36943c6f59885302aae2bf73ecda721d1badf

Download Submit
memory/1400-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1400-15-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2416-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2416-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2416-8-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download