3e99e1f8e748c5e56b0d94da83bf7c1a8f43bf386da680e9f16ea0125dcb8f2a

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18/04/2024, 07:33

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General

Target

2024-04-18_45cdd865b81c45dfa4f2b7ea93f7d3f4_cryptolocker.exe
Size

82KB
MD5

45cdd865b81c45dfa4f2b7ea93f7d3f4
SHA1

5546f89992276fc06d39119a19e59177b793aa2f
SHA256

3e99e1f8e748c5e56b0d94da83bf7c1a8f43bf386da680e9f16ea0125dcb8f2a
SHA512

48158a9314440830b399aec1d26b58ec2b5cf9eb9a269ed1fbb4fb3ba68343b46c90be39be7adbc047356efd6c58057a53e811e87fe312d0474d13454153f127
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrMC:TCjsIOtEvwDpj5HE/OUHnSMv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2844-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2844-14-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00050000000120e0-15.dat	CryptoLocker_rule2
behavioral1/memory/2536-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2536-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2844-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2844-14-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00050000000120e0-15.dat	CryptoLocker_set1
behavioral1/memory/2536-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2536-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2536	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2844	2024-04-18_45cdd865b81c45dfa4f2b7ea93f7d3f4_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 2844 wrote to memory of 2536	2844	2024-04-18_45cdd865b81c45dfa4f2b7ea93f7d3f4_cryptolocker.exe	28
PID 2844 wrote to memory of 2536	2844	2024-04-18_45cdd865b81c45dfa4f2b7ea93f7d3f4_cryptolocker.exe	28
PID 2844 wrote to memory of 2536	2844	2024-04-18_45cdd865b81c45dfa4f2b7ea93f7d3f4_cryptolocker.exe	28
PID 2844 wrote to memory of 2536	2844	2024-04-18_45cdd865b81c45dfa4f2b7ea93f7d3f4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-18_45cdd865b81c45dfa4f2b7ea93f7d3f4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_45cdd865b81c45dfa4f2b7ea93f7d3f4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2536

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\misid.exe

Filesize
82KB

MD5
24ac90aba9d045ac12b1f22c6425a4ff

SHA1
c7c530407f77761bd9d1fb508b0b546880a84a0e

SHA256
c2271e31347e26bfba6d5e20de2e60140c073e1d3bbfe5dc892d86e35fd51727

SHA512
f5614e565166082fefb6311d2f980834cdab0aea2a4a5e36d5d90bc35070ea6860c4108a8f0e629f8eacfc9134a728c83444030cba8c5e37d42bb7e7b27f49e5

Download Submit
memory/2536-16-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2536-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2536-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2536-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2844-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2844-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2844-2-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2844-6-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2844-14-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download