40770bc91fc915a4c3fa9408ce27a80be8954c6b1773274154272ca082f89194

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
25/05/2024, 22:32

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General

Target

2024-05-25_876e5dd1b256d541f730cd485ef9d943_cryptolocker.exe
Size

56KB
MD5

876e5dd1b256d541f730cd485ef9d943
SHA1

7d97541d80857b4ff2c970cc984c1978d78f4296
SHA256

40770bc91fc915a4c3fa9408ce27a80be8954c6b1773274154272ca082f89194
SHA512

3d3cf9560cdefb310aaa9868e480951b3f04c9d4aea9536dedf5315f0ead18d96a54526e82b306b2996050f552e47bfa95eb5037ad3fb64936cddd12882ed539
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTb8pu1B:bIDOw9a0DwitDZzcTL1B

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000015d79-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2476	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2008	2024-05-25_876e5dd1b256d541f730cd485ef9d943_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 2008 wrote to memory of 2476	2008	2024-05-25_876e5dd1b256d541f730cd485ef9d943_cryptolocker.exe	28
PID 2008 wrote to memory of 2476	2008	2024-05-25_876e5dd1b256d541f730cd485ef9d943_cryptolocker.exe	28
PID 2008 wrote to memory of 2476	2008	2024-05-25_876e5dd1b256d541f730cd485ef9d943_cryptolocker.exe	28
PID 2008 wrote to memory of 2476	2008	2024-05-25_876e5dd1b256d541f730cd485ef9d943_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-25_876e5dd1b256d541f730cd485ef9d943_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_876e5dd1b256d541f730cd485ef9d943_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2476

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
56KB

MD5
f10117a297e034913153015e54595884

SHA1
1a12cdd63a2bd3ccb5e49e8c33b539b8226fbbea

SHA256
ee57c5181dd28eb3c11680a50f3fb744a5cb5da00c9b452ed9c909e952f34587

SHA512
58ae8004b25af769a8baa4f265eb6f89e04633f46e928c93b43223e3cd2e1e4db1bfb19e986a229658f84e465b996083f1e1534c7b26d3c02316c450090cd606

Download Submit
memory/2008-0-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2008-1-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2008-8-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2476-15-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2476-22-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download