1e4e432b368979ed98ea64e6c49c593b6a226e6f9b9feec8506219318ac51e11

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 07:22

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General

Target

2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe
Size

41KB
MD5

1a1337e42d86f96df1a425d5c7cca4e1
SHA1

d6e9c4ce9668806c2a8162bc2490759623a91142
SHA256

1e4e432b368979ed98ea64e6c49c593b6a226e6f9b9feec8506219318ac51e11
SHA512

1eba6bc0efae5ba51347bed8c593b7c3457b132111fc86058563d160752b0734b6d540c46d47f82bd1e8036fb0f15ca2daa0a7ef9da4db75ca8902c09e046ebb
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAn7g:bCDOw9aMDooc+vA7g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014aec-23.dat	CryptoLocker_rule2
behavioral1/memory/1932-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1932-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1756-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1756	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1932	2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_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 1932 wrote to memory of 1756	1932	2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe	28
PID 1932 wrote to memory of 1756	1932	2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe	28
PID 1932 wrote to memory of 1756	1932	2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe	28
PID 1932 wrote to memory of 1756	1932	2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1756

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

C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
41KB

MD5
a9ce275c7612a7504d2e7bbd2cc5f36c

SHA1
047b7a94ead58f91ca6c159c44f02a863925f452

SHA256
52f0519747fde9aecb9a06254b5d62912548ff32df617d6954024b34ec74b059

SHA512
08d333568c7a64df9f9bc49e9fdb0138ad622a281996a8490cb5ceb78829b13d2f11318cbb057c8e9b32633fef81fe29a110f6f157c7fb61c913c20a9bdf0955

Download Submit
memory/1756-24-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1756-17-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1756-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1932-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1932-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1932-2-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/1932-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1932-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download