a57e262f17a4bdec33ba332ff6f621dca8775b41d6b14a6db910315a77a6248e

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
17/04/2024, 19:57

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General

Target

2024-04-17_dc300d8889c70e7f77beb500af97f1b2_cryptolocker.exe
Size

36KB
MD5

dc300d8889c70e7f77beb500af97f1b2
SHA1

5f9c47dfe11599b7d5bce196b97f5d185f399f79
SHA256

a57e262f17a4bdec33ba332ff6f621dca8775b41d6b14a6db910315a77a6248e
SHA512

16bd00bcb1ccbfe0e025401b9c532a1bc731ef59fcdedfd03de76a31205158ebd49cbd5aa85dd9943bba0293e2ae717309304af702ffda07066d99850c2f7c7c
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qE4kb6oY26z:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00090000000122be-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2368	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1244	2024-04-17_dc300d8889c70e7f77beb500af97f1b2_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1244	2024-04-17_dc300d8889c70e7f77beb500af97f1b2_cryptolocker.exe
2368	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1244 wrote to memory of 2368	1244	2024-04-17_dc300d8889c70e7f77beb500af97f1b2_cryptolocker.exe	28
PID 1244 wrote to memory of 2368	1244	2024-04-17_dc300d8889c70e7f77beb500af97f1b2_cryptolocker.exe	28
PID 1244 wrote to memory of 2368	1244	2024-04-17_dc300d8889c70e7f77beb500af97f1b2_cryptolocker.exe	28
PID 1244 wrote to memory of 2368	1244	2024-04-17_dc300d8889c70e7f77beb500af97f1b2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-17_dc300d8889c70e7f77beb500af97f1b2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_dc300d8889c70e7f77beb500af97f1b2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2368

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\rewok.exe

Filesize
36KB

MD5
f02268c0d18bdcd18397ab37a39ef4c0

SHA1
95032316327800130665cf8a0fb348212e332d1b

SHA256
f006636503de2c0c338284d7365d6cdc7f3c187eb95652184e2150b388a02a08

SHA512
71b4acb2e4499485dabd256d234ceb00bf39c0508f50bb1086c93e920f249f7157c4c3bc616882db5d24d5f3349c790284f40b36b63cc8a5a73fce3e6870c24e

Download Submit
memory/1244-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1244-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1244-8-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2368-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download