expiro | 4b94e1b447299107afa90a596df67b33422665e469d0ad7382d6f85849f52879

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 01:32

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General

Target

JaffaCakes118_82bd189fe9d002de9956c3b3868873ca.exe
Size

402KB
MD5

82bd189fe9d002de9956c3b3868873ca
SHA1

3640db43d28d811ec5da359711d24b42c17cf38a
SHA256

4b94e1b447299107afa90a596df67b33422665e469d0ad7382d6f85849f52879
SHA512

033433a85ef2a90ccbac90190b97996f72311ac29c0f8934ca06767a64ec5b1ac509eec3d32309833b94c374687bddf3c4dfecd97bea592b869fa7e386e63d97
SSDEEP

6144:qJ/aaoFtWUXBZycq96N4HuzywTG+bTRGKE9nKKWzsjztNNvqM2kJE:qJ/aa8WUZ26CH/A1tUKrczt

Score

10^/10

expiro backdoor discovery

Malware Config

Signatures

Expiro family
expiro
Expiro, m0yv
Expiro aka m0yv is a multi-functional backdoor written in C++.
backdoor expiro

Expiro payload 4 IoCs

backdoor

resource	yara_rule
behavioral1/memory/2500-0-0x0000000001068000-0x00000000010FB000-memory.dmp	family_expiro1
behavioral1/memory/2500-1-0x0000000001068000-0x00000000010FB000-memory.dmp	family_expiro1
behavioral1/memory/2500-2-0x0000000001000000-0x00000000010FB000-memory.dmp	family_expiro1
behavioral1/memory/2500-3-0x0000000001000000-0x00000000010FB000-memory.dmp	family_expiro1

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_82bd189fe9d002de9956c3b3868873ca.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82bd189fe9d002de9956c3b3868873ca.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82bd189fe9d002de9956c3b3868873ca.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2500-0-0x0000000001068000-0x00000000010FB000-memory.dmp

Filesize
588KB

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memory/2500-1-0x0000000001068000-0x00000000010FB000-memory.dmp

Filesize
588KB

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memory/2500-2-0x0000000001000000-0x00000000010FB000-memory.dmp

Filesize
1004KB

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memory/2500-3-0x0000000001000000-0x00000000010FB000-memory.dmp

Filesize
1004KB

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