grandoreiro | 77cd5e37fd759566b262dce60393c61a32d254db209c5752ab54b07bdf564a4b

Analysis

max time kernel
93s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08/11/2024, 16:50

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General

Target

77cd5e37fd759566b262dce60393c61a32d254db209c5752ab54b07bdf564a4b.dll
Size

30.7MB
MD5

be3f562b04a0dea4bf99f8cdba808daa
SHA1

e75ab02fa4a8ac038f6778fec604374a52833619
SHA256

77cd5e37fd759566b262dce60393c61a32d254db209c5752ab54b07bdf564a4b
SHA512

a3fcd3c73fbf6890093349e3586013e8f22a2d213ca28ca95e04d29a30f4cd4120e0f32632a1235b01d3d5ae8cb1d44359751287caa1aa07eb52fa1424236687
SSDEEP

393216:6NVQVZ65E+y5SwbHcruXKNhhciGvHE4pR4+O:y4LnSiHKNAi8P/

Score

10^/10

grandoreiro banker discovery trojan

Malware Config

Signatures

Detects Grandoreiro payload 1 IoCs

resource	yara_rule
behavioral2/memory/4736-0-0x00000000023F0000-0x00000000042AD000-memory.dmp	family_grandoreiro_v1

Grandoreiro
Part of a group of banking trojans, targeting Spanish and Portuguese speaking countries.
trojan banker grandoreiro
Grandoreiro family
grandoreiro

Program crash 1 IoCs

pid	pid_target	Process	procid_target
468	4736	WerFault.exe	83

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	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 900 wrote to memory of 4736	900	rundll32.exe	83
PID 900 wrote to memory of 4736	900	rundll32.exe	83
PID 900 wrote to memory of 4736	900	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\77cd5e37fd759566b262dce60393c61a32d254db209c5752ab54b07bdf564a4b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:900
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\77cd5e37fd759566b262dce60393c61a32d254db209c5752ab54b07bdf564a4b.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4736
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 748
    3⤵
    - Program crash
    PID:468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4736 -ip 4736
1⤵
PID:5024

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/4736-0-0x00000000023F0000-0x00000000042AD000-memory.dmp

Filesize
30.7MB

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