098988fb4df8a47d7923548fa3711b236fd9f3fbfe63aaeac8fab59a9d55fe47

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
17/04/2024, 08:45

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General

Target

2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe
Size

95KB
MD5

d4e3f00ececfba64b7dfd8b3c2c9ceff
SHA1

cd0f93710379f79ce1ad8cbe27d0d651ee4558b1
SHA256

098988fb4df8a47d7923548fa3711b236fd9f3fbfe63aaeac8fab59a9d55fe47
SHA512

fc7bf9344650ea87e100a0aeae0b83d5ddc5b2c252551b8f6e22c659717602466f7460da810a2f52e7053e2e83c82c6714e04800b6bac9e76cf494f8b4eb3f90
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/bD8:zCsanOtEvwDpjB8

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2480-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000800000001222d-11.dat	CryptoLocker_rule2
behavioral1/memory/2480-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2956-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2956-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2480-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000800000001222d-11.dat	CryptoLocker_set1
behavioral1/memory/2480-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2956-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2956-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2480-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000800000001222d-11.dat	UPX
behavioral1/memory/2480-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2956-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2956-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2956	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2480	2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2480-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000800000001222d-11.dat	upx
behavioral1/memory/2480-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2956-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2956-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2480 wrote to memory of 2956	2480	2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe	28
PID 2480 wrote to memory of 2956	2480	2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe	28
PID 2480 wrote to memory of 2956	2480	2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe	28
PID 2480 wrote to memory of 2956	2480	2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2956

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\misid.exe

Filesize
96KB

MD5
ede79d2dc5c2624fe7fcfb480fc5be5a

SHA1
7bf32c763eca1fdded8abefe3c1532e557c3eec7

SHA256
e955065d8b2b10b6d7d4b753d6e4d2f868c78aa1abfeb886be2a8676ffd0971c

SHA512
9f6000fd7ef2bfa27df942a1079f1da8d868cdb470e8ef6eac3bb070f4ec5af720179e2352f10fd958beb28eada6f921883e0f88a12b773b2565a957334c66a1

Download Submit
memory/2480-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2480-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2480-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2480-4-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2480-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2956-18-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2956-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2956-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download