expiro | 03c8d8d9ef35d718c7aa375230a1b1a76ea19ad5b0d5e87681f9935ce55702e6

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 00:59

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General

Target

JaffaCakes118_f2e2363ba761eff6077735e74d85256a.exe
Size

456KB
MD5

f2e2363ba761eff6077735e74d85256a
SHA1

f0828988e40ae87e317f947e2d3b7f4c41488ea9
SHA256

03c8d8d9ef35d718c7aa375230a1b1a76ea19ad5b0d5e87681f9935ce55702e6
SHA512

9938fcc95259daa2e9ab83782163bf12a8585d15cbb7163096bad32100377c3e4d4a1dd73db5e9fe1237befa8a481e52694d6e0c4b366be3f23d3d10d304ac98
SSDEEP

12288:mhzOCTtN8miF2RWkFhWwdO3E+2MNF3TKJ1DE+Vx2NMPQ5I:CRTtN8miIRWk+wdOpNF3TYICC

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/2368-0-0x0000000000474000-0x0000000000507000-memory.dmp	family_expiro1
behavioral1/memory/2368-1-0x0000000000400000-0x0000000000507000-memory.dmp	family_expiro1
behavioral1/memory/2368-2-0x0000000000474000-0x0000000000507000-memory.dmp	family_expiro1
behavioral1/memory/2368-3-0x0000000000400000-0x0000000000507000-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_f2e2363ba761eff6077735e74d85256a.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2e2363ba761eff6077735e74d85256a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2e2363ba761eff6077735e74d85256a.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2368

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/2368-0-0x0000000000474000-0x0000000000507000-memory.dmp

Filesize
588KB

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memory/2368-1-0x0000000000400000-0x0000000000507000-memory.dmp

Filesize
1.0MB

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memory/2368-2-0x0000000000474000-0x0000000000507000-memory.dmp

Filesize
588KB

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memory/2368-3-0x0000000000400000-0x0000000000507000-memory.dmp

Filesize
1.0MB

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