349db6206369ba95eac3fc928b2da9266fc66caa6414294305127c322fdb01b6

General

Target

2024-04-22_517038dafc5aeda00855795c110a0c8e_cryptolocker.exe
Size

60KB
MD5

517038dafc5aeda00855795c110a0c8e
SHA1

d5b565b7d82e463450bb1b246cd06d3e6987ad6a
SHA256

349db6206369ba95eac3fc928b2da9266fc66caa6414294305127c322fdb01b6
SHA512

f5be8f05a80edd22af350e18b3f05430ee757f11d69de892d7e70a990af763e18198fed36f705c894440be7fbd022cc56cd1aacf82380980887efacc61034a27
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHNMhK:1nK6a+qdOOtEvwDpja

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1812-1-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224e-11.dat	CryptoLocker_rule2
behavioral1/memory/1812-14-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2600-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2600-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1812-1-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001224e-11.dat	CryptoLocker_set1
behavioral1/memory/1812-14-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2600-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2600-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1812-1-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x000b00000001224e-11.dat	UPX
behavioral1/memory/1812-14-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2600-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2600-26-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2600	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1812	2024-04-22_517038dafc5aeda00855795c110a0c8e_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1812-1-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000b00000001224e-11.dat	upx
behavioral1/memory/1812-14-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2600-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2600-26-0x0000000000500000-0x000000000050F311-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 1812 wrote to memory of 2600	1812	2024-04-22_517038dafc5aeda00855795c110a0c8e_cryptolocker.exe	28
PID 1812 wrote to memory of 2600	1812	2024-04-22_517038dafc5aeda00855795c110a0c8e_cryptolocker.exe	28
PID 1812 wrote to memory of 2600	1812	2024-04-22_517038dafc5aeda00855795c110a0c8e_cryptolocker.exe	28
PID 1812 wrote to memory of 2600	1812	2024-04-22_517038dafc5aeda00855795c110a0c8e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-22_517038dafc5aeda00855795c110a0c8e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_517038dafc5aeda00855795c110a0c8e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2600

Network

DNS

emrlogistics.com

asih.exe

Remote address:

8.8.8.8:53

Request

emrlogistics.com

IN A

Response

emrlogistics.com

IN CNAME

traff-3.hugedomains.com

traff-3.hugedomains.com

IN CNAME

hdr-nlb4-0bbd2e21834cb637.elb.us-east-2.amazonaws.com

hdr-nlb4-0bbd2e21834cb637.elb.us-east-2.amazonaws.com

IN A

3.19.116.195

hdr-nlb4-0bbd2e21834cb637.elb.us-east-2.amazonaws.com

IN A

3.18.7.81

3.19.116.195:443

emrlogistics.com

asih.exe

152 B
3
3.18.7.81:443

emrlogistics.com

asih.exe

152 B
3
3.19.116.195:443

emrlogistics.com

asih.exe

152 B
3
3.18.7.81:443

emrlogistics.com

asih.exe

152 B
3
3.19.116.195:443

emrlogistics.com

asih.exe

152 B
3
3.18.7.81:443

emrlogistics.com

asih.exe

152 B
3
3.19.116.195:443

emrlogistics.com

asih.exe

152 B
3
3.18.7.81:443

emrlogistics.com

asih.exe

52 B
1

8.8.8.8:53

emrlogistics.com

dns

asih.exe

62 B
192 B
1
1

DNS Request

emrlogistics.com

DNS Response

3.19.116.195

3.18.7.81

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

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Downloads

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

Filesize
61KB

MD5
c125eb9166be4beeef354a47f069e57e

SHA1
137c70ac7f68055adad0bc8a031db52d14c16498

SHA256
907416195d994b1c5b4e342f8e0942e9a1f8be440fa5597765c4841ffde28648

SHA512
a25ec7bdd8afdf480ee1d6b4a609f32a48da355d13a24ae2a7d317fff0b7cc9cd288af1678c13afc1026fd346e89d82b19d94cd58e9713d0c7feaa0f70b963f6

Download Submit
memory/1812-1-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1812-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1812-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1812-3-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1812-14-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2600-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2600-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2600-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2600-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

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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