fc9e09a5107cd542f3b39ca4115403adcd6a7e57c8194d33ef83d9deb803d2c0

General

Target

2024-04-30_663fc31ea8e1fc5623b3c03817d2b232_cryptolocker.exe
Size

65KB
MD5

663fc31ea8e1fc5623b3c03817d2b232
SHA1

ff8cae4428a4daa1fcf6a07cd5c6d670eab4b2b7
SHA256

fc9e09a5107cd542f3b39ca4115403adcd6a7e57c8194d33ef83d9deb803d2c0
SHA512

5de0947ceef57ef2893150fdc7c27fcb82e0e6cf12b26873bd4659d7825502792a2917eeefd7b765c8abce849d5f413ce5bdff2b4bb1c85b1ea23ff196b0f256
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYZ8xDyv:1nK6a+qdOOtEvwDpj8

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001231a-11.dat	CryptoLocker_rule2
behavioral1/memory/2120-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2740-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001231a-11.dat	CryptoLocker_set1
behavioral1/memory/2120-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2740-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x000d00000001231a-11.dat	UPX
behavioral1/memory/2120-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2740-26-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2740	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2120	2024-04-30_663fc31ea8e1fc5623b3c03817d2b232_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000d00000001231a-11.dat	upx
behavioral1/memory/2120-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2740-26-0x0000000000500000-0x000000000050F311-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 2120 wrote to memory of 2740	2120	2024-04-30_663fc31ea8e1fc5623b3c03817d2b232_cryptolocker.exe	28
PID 2120 wrote to memory of 2740	2120	2024-04-30_663fc31ea8e1fc5623b3c03817d2b232_cryptolocker.exe	28
PID 2120 wrote to memory of 2740	2120	2024-04-30_663fc31ea8e1fc5623b3c03817d2b232_cryptolocker.exe	28
PID 2120 wrote to memory of 2740	2120	2024-04-30_663fc31ea8e1fc5623b3c03817d2b232_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-30_663fc31ea8e1fc5623b3c03817d2b232_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_663fc31ea8e1fc5623b3c03817d2b232_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2740

Network

DNS

emrlogistics.com

asih.exe

Remote address:

8.8.8.8:53

Request

emrlogistics.com

IN A

Response

emrlogistics.com

IN CNAME

traff-6.hugedomains.com

traff-6.hugedomains.com

IN CNAME

hdr-nlb10-d66bbad0736f8259.elb.us-east-2.amazonaws.com

hdr-nlb10-d66bbad0736f8259.elb.us-east-2.amazonaws.com

IN A

18.119.154.66

hdr-nlb10-d66bbad0736f8259.elb.us-east-2.amazonaws.com

IN A

3.140.13.188

18.119.154.66:443

emrlogistics.com

asih.exe

152 B
3
3.140.13.188:443

emrlogistics.com

asih.exe

152 B
3
18.119.154.66:443

emrlogistics.com

asih.exe

152 B
3
3.140.13.188:443

emrlogistics.com

asih.exe

152 B
3
18.119.154.66:443

emrlogistics.com

asih.exe

152 B
3
3.140.13.188:443

emrlogistics.com

asih.exe

152 B
3
18.119.154.66:443

emrlogistics.com

asih.exe

152 B
3
3.140.13.188:443

emrlogistics.com

asih.exe

52 B
1

8.8.8.8:53

emrlogistics.com

dns

asih.exe

62 B
193 B
1
1

DNS Request

emrlogistics.com

DNS Response

18.119.154.66

3.140.13.188

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
65KB

MD5
cdc86287e67f7be3c4db3a4618fb7e2a

SHA1
01e8570cd10a955cc217c7ecbee3892125985772

SHA256
2a01e45ceb4ba3bd26db3e25dcd92feb29b793b64faad0bb4cda401577fc7546

SHA512
15aebf82c91ffcc2d53d4ed736355b812f2f30ec13c1c662c024d43204d4cb6308060dc2491d895d212601417ce71ebf95f9c9e5d88a01035096c1df9e5581bc

Download Submit
memory/2120-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2120-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2120-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2120-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2120-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2120-14-0x00000000005F0000-0x0000000000600000-memory.dmp

Filesize
64KB

Download
memory/2740-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2740-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2740-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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Downloads

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