c39cfeb460dca0f45e5789db8480217a589d56837d809e41fa722422b3535250

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19/04/2024, 00:29

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General

Target

2024-04-19_3252c03883292d93e691f8699b64228d_cryptolocker.exe
Size

41KB
MD5

3252c03883292d93e691f8699b64228d
SHA1

02ef78b2b12d249e68239a14b3b31fce31ade286
SHA256

c39cfeb460dca0f45e5789db8480217a589d56837d809e41fa722422b3535250
SHA512

86e216ccd550f26838c89fdda62167bba6e3b6d4e4531d65d345f26ed2dce86a82aece4ef743921588d79d3873f9dd99f591c006d93532588ac3cacaa3160073
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAHR:bCDOw9aMDooc+vAx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2184-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001223a-11.dat	CryptoLocker_rule2
behavioral1/memory/2184-13-0x00000000026F0000-0x00000000026FA000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2500-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2184-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2500-27-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2500	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2184	2024-04-19_3252c03883292d93e691f8699b64228d_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 2184 wrote to memory of 2500	2184	2024-04-19_3252c03883292d93e691f8699b64228d_cryptolocker.exe	28
PID 2184 wrote to memory of 2500	2184	2024-04-19_3252c03883292d93e691f8699b64228d_cryptolocker.exe	28
PID 2184 wrote to memory of 2500	2184	2024-04-19_3252c03883292d93e691f8699b64228d_cryptolocker.exe	28
PID 2184 wrote to memory of 2500	2184	2024-04-19_3252c03883292d93e691f8699b64228d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-19_3252c03883292d93e691f8699b64228d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_3252c03883292d93e691f8699b64228d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2500

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
41KB

MD5
c5aadf04a4c627c663c2120bb48a3946

SHA1
1e5c2da6949d1408afb1c88eb785e511c2fddf35

SHA256
18ece532ac4a6e2f6bfa1b46af50387394259f47afa2272291994b7b9c9737ff

SHA512
f0a75d23b926e023073ceb5044a82fa9f597cbe23d41cda4b9e497dbc392fff0f1dfa7d5b6e9df80343d1efd84785ff1031c6bc6f66d2ce7fbb22fd924caaa67

Download Submit
memory/2184-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2184-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2184-3-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2184-2-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2184-13-0x00000000026F0000-0x00000000026FA000-memory.dmp

Filesize
40KB

Download
memory/2184-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2500-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2500-20-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2500-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2500-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download