dridex | 2ec35da14989692e77df25d56c7b1d43a3e93a72ec2fc7cce67b2fa448744752

General

Target

Inv_121314_42664.xlsm
Size

26KB
MD5

1b109efade90ace7d953507adb1f1563
SHA1

e4eef787b94f80e5374a2058cafc6a37d3fa2c0f
SHA256

2ec35da14989692e77df25d56c7b1d43a3e93a72ec2fc7cce67b2fa448744752
SHA512

4c16f6fcbb91b7a75cf7f1b2bb9938aa4275c0954f9ec1a2b189e100b53e225d0bfb2ae95dd167a794a6e88feb8fece8d05c6ce8149ae975d34886cff32a937f

Score

10^/10

dridex 10444 botnet cryptone loader packer

Malware Config

Extracted

Family

dridex

Botnet

10444

C2

195.154.237.245:443

46.105.131.73:8172

91.238.160.158:18443

213.183.128.99:3786

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

regsvr32.exeregsvr32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2100	648	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3860	648	regsvr32.exe	EXCEL.EXE

CryptOne packer 4 IoCs

Detects CryptOne packer defined in NCC blogpost.

cryptone packer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\ykgippie._BQ	cryptone
C:\Users\Admin\AppData\Local\Temp\wtmxhg._OH	cryptone
\Users\Admin\AppData\Local\Temp\ykgippie._BQ	cryptone
\Users\Admin\AppData\Local\Temp\wtmxhg._OH	cryptone

Dridex Loader 2 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/3856-12-0x00000000033A0000-0x00000000033DD000-memory.dmp	dridex_ldr
behavioral2/memory/2196-13-0x0000000003470000-0x00000000034AD000-memory.dmp	dridex_ldr

Loads dropped DLL 2 IoCs

Processes:

regsvr32.exeregsvr32.exe

pid process

2196 regsvr32.exe
3856 regsvr32.exe

pid	process
2196	regsvr32.exe
3856	regsvr32.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

648 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXEregsvr32.exeregsvr32.exe

description	pid	process	target process
PID 648 wrote to memory of 2100	648	EXCEL.EXE	regsvr32.exe
PID 648 wrote to memory of 2100	648	EXCEL.EXE	regsvr32.exe
PID 648 wrote to memory of 3860	648	EXCEL.EXE	regsvr32.exe
PID 648 wrote to memory of 3860	648	EXCEL.EXE	regsvr32.exe
PID 2100 wrote to memory of 3856	2100	regsvr32.exe	regsvr32.exe
PID 2100 wrote to memory of 3856	2100	regsvr32.exe	regsvr32.exe
PID 2100 wrote to memory of 3856	2100	regsvr32.exe	regsvr32.exe
PID 3860 wrote to memory of 2196	3860	regsvr32.exe	regsvr32.exe
PID 3860 wrote to memory of 2196	3860	regsvr32.exe	regsvr32.exe
PID 3860 wrote to memory of 2196	3860	regsvr32.exe	regsvr32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Inv_121314_42664.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:648

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\ykgippie._BQ
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:2100

C:\Windows\SysWOW64\regsvr32.exe
-s C:\Users\Admin\AppData\Local\Temp\ykgippie._BQ
3⤵
- Loads dropped DLL
PID:3856

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\wtmxhg._OH
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3860

C:\Windows\SysWOW64\regsvr32.exe
-s C:\Users\Admin\AppData\Local\Temp\wtmxhg._OH
3⤵
- Loads dropped DLL
PID:2196

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\wtmxhg._OH
MD5
745ec2e78f46e4708d61b0c53ff17e9e

SHA1
c59243926c629ed640370e78e62ac95645f1d850

SHA256
98b86b84236397a88c69916d68734c815b97a00529d1bf513584c81421083e59

SHA512
2be9bd3c6870ad57d4feed51337d7e65d5a6d91506c12e2add04760c4cc49ab7ff7890355c5a2c7339de0d848bca815472fc475b250d5012b237b7bf30143b33

Download Submit
C:\Users\Admin\AppData\Local\Temp\ykgippie._BQ
MD5
745ec2e78f46e4708d61b0c53ff17e9e

SHA1
c59243926c629ed640370e78e62ac95645f1d850

SHA256
98b86b84236397a88c69916d68734c815b97a00529d1bf513584c81421083e59

SHA512
2be9bd3c6870ad57d4feed51337d7e65d5a6d91506c12e2add04760c4cc49ab7ff7890355c5a2c7339de0d848bca815472fc475b250d5012b237b7bf30143b33

Download Submit
\Users\Admin\AppData\Local\Temp\wtmxhg._OH
MD5
745ec2e78f46e4708d61b0c53ff17e9e

SHA1
c59243926c629ed640370e78e62ac95645f1d850

SHA256
98b86b84236397a88c69916d68734c815b97a00529d1bf513584c81421083e59

SHA512
2be9bd3c6870ad57d4feed51337d7e65d5a6d91506c12e2add04760c4cc49ab7ff7890355c5a2c7339de0d848bca815472fc475b250d5012b237b7bf30143b33

Download Submit
\Users\Admin\AppData\Local\Temp\ykgippie._BQ
MD5
745ec2e78f46e4708d61b0c53ff17e9e

SHA1
c59243926c629ed640370e78e62ac95645f1d850

SHA256
98b86b84236397a88c69916d68734c815b97a00529d1bf513584c81421083e59

SHA512
2be9bd3c6870ad57d4feed51337d7e65d5a6d91506c12e2add04760c4cc49ab7ff7890355c5a2c7339de0d848bca815472fc475b250d5012b237b7bf30143b33

Download Submit
memory/648-0-0x00007FF91E870000-0x00007FF91EEA7000-memory.dmp

Filesize
6.2MB

Download
memory/2100-4-0x0000000000000000-mapping.dmp

Download
memory/2196-9-0x0000000000000000-mapping.dmp

Download
memory/2196-13-0x0000000003470000-0x00000000034AD000-memory.dmp

Filesize
244KB

Download
memory/3856-7-0x0000000000000000-mapping.dmp

Download
memory/3856-12-0x00000000033A0000-0x00000000033DD000-memory.dmp

Filesize
244KB

Download
memory/3860-6-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads