38ed27e112cf8301c786d9ac90323e18ec4fa461d9c6c2e1b619ffc56ee6f9f6

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 14:35

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General

Target

2024-03-25_ed810aa59cf6b92c89691871b323eaf6_cryptolocker.exe
Size

97KB
MD5

ed810aa59cf6b92c89691871b323eaf6
SHA1

e88c602f12305405ccd7c218f550c6d855dd309b
SHA256

38ed27e112cf8301c786d9ac90323e18ec4fa461d9c6c2e1b619ffc56ee6f9f6
SHA512

abf05b4f32feca916a25e6be4adcd5abefa425c85fe8cfa62a67ad88ba4123e3da136050d584bce75fcd76f140809f661108607ce6d24b23db51b540dd7078fc
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJvfT3XaF51:xj+VGMOtEvwDpjubwQEIiVmkfXm1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1068-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022745-13.dat	CryptoLocker_rule2
behavioral2/memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1068-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3068-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1068-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000022745-13.dat	CryptoLocker_set1
behavioral2/memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1068-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3068-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1068-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000022745-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1068-19-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3068-27-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-25_ed810aa59cf6b92c89691871b323eaf6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3068	misid.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1068 wrote to memory of 3068	1068	2024-03-25_ed810aa59cf6b92c89691871b323eaf6_cryptolocker.exe	91
PID 1068 wrote to memory of 3068	1068	2024-03-25_ed810aa59cf6b92c89691871b323eaf6_cryptolocker.exe	91
PID 1068 wrote to memory of 3068	1068	2024-03-25_ed810aa59cf6b92c89691871b323eaf6_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-25_ed810aa59cf6b92c89691871b323eaf6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_ed810aa59cf6b92c89691871b323eaf6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1068
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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
97KB

MD5
29c2a407df9945313ffa0d43ca889780

SHA1
3ce417639715a891de6e694f3eba22ec14f89d94

SHA256
a2ccc1586c79f8efe35133483137f231c1227b653a97b50c9396a8e3c9738500

SHA512
7b745d6cbf932e43a8c08fd4e47ce5c73462e0ba2d775be10a27d6150c833dcd7b568f6211a957ca675effb6b4f4c596ef84cccc40a42c89cb126e0b7dc0762d

Download Submit
memory/1068-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1068-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1068-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1068-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1068-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3068-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3068-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3068-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download