ab48e28b3cec4d0afcb40cfc2c4560e2a2835dda2e3ca76f444b646995f4fb66

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
30/04/2024, 02:59

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General

Target

2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe
Size

71KB
MD5

daf297a17f079f7137a550dea945ded5
SHA1

c71a403ae80b9c79f0a7610373e1fdcfa5b1fb48
SHA256

ab48e28b3cec4d0afcb40cfc2c4560e2a2835dda2e3ca76f444b646995f4fb66
SHA512

9777542b3e365df4073493a4c60aa4fd415016600244bf63ce44852df50ff9cacc6b77823efbdee1fd33c18202bf3d65622e7f2404d9a887b44c0d013941d2a1
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9r:C4Q2c94OtEvwDpj4H8zO

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2744-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001231c-11.dat	CryptoLocker_rule2
behavioral1/memory/2744-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2580-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2580-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2744-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2744-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2580-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2744-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d00000001231c-11.dat	UPX
behavioral1/memory/2744-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2580-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2580-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2580	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2744	2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2744-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d00000001231c-11.dat	upx
behavioral1/memory/2744-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2580-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2580-27-0x0000000000500000-0x0000000000510000-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 2744 wrote to memory of 2580	2744	2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe	28
PID 2744 wrote to memory of 2580	2744	2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe	28
PID 2744 wrote to memory of 2580	2744	2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe	28
PID 2744 wrote to memory of 2580	2744	2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2580

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
72KB

MD5
bc9a235e4ed710c8e1cfd0cd5de53b1d

SHA1
6dfd7775b53789d0f434759f2195ee6af58f9d3d

SHA256
4232ac26a158254e244c2c6f3d3b0fc056c975adaeb31b04834940020e723a51

SHA512
9f40ec87a2b95068b53f4535e2a6b2e6d3c6c9ec104d024de2cc8ddf163152a0053a91368c0c00ac5de5215eb170629c3de32c8b734761f9aac44158e18b11d4

Download Submit
memory/2580-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2580-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2580-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2580-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2744-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2744-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2744-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2744-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2744-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download