expiro | e8a0d623ecb16e1dde0ee7a7d8ad5e0edf2e33dbcf09b6b763b5caa1531b5c7e

Analysis

max time kernel
93s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-12-2024 08:21

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General

Target

e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Size

221KB
MD5

e57ed94531285974996efac8df3e9c34
SHA1

d0c37f42761591bb11fd1cda50cb96b309e4387d
SHA256

e8a0d623ecb16e1dde0ee7a7d8ad5e0edf2e33dbcf09b6b763b5caa1531b5c7e
SHA512

1597dff079d24a0b0447489b619b5101c5226ab3c0e845d249761e2d5858d2bf49848a8013983e814b82db1ea15efcbaca15ee11cf97ca2016afcdf0bea68ca4
SSDEEP

3072:aOLwcnqj/z/xWikNEx+LDtAMFOIPpWl8XngZbRgjeiDw64WI1kxpxtkoS/ubT1F:aOLwcnqrzJ+/npWuXYbRkYpcxtkov

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 1 IoCs

backdoor

resource	yara_rule
behavioral2/memory/964-2-0x0000000001000000-0x0000000001084000-memory.dmp	family_expiro1

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe

Modifies registry class 13 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard\Extension = ".vcf"	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\.vcf	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\.vcf\Content Type = "text/x-vcard"	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\shell\open\command	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\shell\open\command\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\" /vcard %1"	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\",1"	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.wab	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\.vcf\ = "vcard_wab_auto_file"	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\ = "vCard File"	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings	e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e57ed94531285974996efac8df3e9c34_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:964

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/964-0-0x0000000001000000-0x0000000001084000-memory.dmp

Filesize
528KB

Download
memory/964-1-0x0000000001003000-0x0000000001004000-memory.dmp

Filesize
4KB

Download
memory/964-2-0x0000000001000000-0x0000000001084000-memory.dmp

Filesize
528KB

Download