dridex | 78288f10031cf16e3400b5347cf525e74fb0a291a33931ee8dcd82e56a9aa6fd

General

Target

Invoice_477336.xlsm
Size

331KB
MD5

e96dda1d1584df4f55cb661a85338e25
SHA1

2146bbc486e5fb847196f18160e41ce9387fcb4c
SHA256

78288f10031cf16e3400b5347cf525e74fb0a291a33931ee8dcd82e56a9aa6fd
SHA512

91e2b6bc3aea177f8e999f970400fc4408f5e9f13339df83a6e3a7d46ffdd129397ac0b185f22609f1245df184db84e615e2ebaa26d52ad98323e31892009f83

Score

10^/10

dridex 22202 botnet evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

22202

C2

45.79.33.48:443

139.162.202.74:5007

68.183.216.174:7443

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 1 IoCs

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

Processes:

mshta.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	4616	4796	mshta.exe	EXCEL.EXE

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/2316-278-0x0000000073880000-0x00000000738B0000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

26 4616 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

2316 rundll32.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe

flow	pid	process
26	4616	mshta.exe

pid	process
2316	rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.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

4796 EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

EXCEL.EXE

pid	process
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE
4796	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXEmshta.exerundll32.exe

description	pid	process	target process
PID 4796 wrote to memory of 4616	4796	EXCEL.EXE	mshta.exe
PID 4796 wrote to memory of 4616	4796	EXCEL.EXE	mshta.exe
PID 4616 wrote to memory of 2752	4616	mshta.exe	rundll32.exe
PID 4616 wrote to memory of 2752	4616	mshta.exe	rundll32.exe
PID 2752 wrote to memory of 2316	2752	rundll32.exe	rundll32.exe
PID 2752 wrote to memory of 2316	2752	rundll32.exe	rundll32.exe
PID 2752 wrote to memory of 2316	2752	rundll32.exe	rundll32.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\Invoice_477336.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4796

C:\Windows\SYSTEM32\mshta.exe
mshta C:\ProgramData//theCountrySetting.sct
2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:4616

C:\Windows\SYSTEM32\rundll32.exe
rundll32.exe C:\ProgramData\qInconsistentFormula.dll,AddLookaside
3⤵
- Suspicious use of WriteProcessMemory
PID:2752

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\ProgramData\qInconsistentFormula.dll,AddLookaside
4⤵
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2316

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\qInconsistentFormula.dll
MD5
2b041349b4d1d04617a46340260ee214

SHA1
762ae3523e74aaa953d7b709f292910c5d2d3420

SHA256
e0a1bef90aa90e68056306d0d0fe03043db0ba0eff2d7f63819133631302bff3

SHA512
fbabe4b984d70ce72435abdb02fac0fb2c8c670044a5419d8519dd4f938b7d7e485cb5aa9738fff68f0d4d88a9246cb444ef415ece5f38a86bdbf99d233b7322

Download Submit
C:\ProgramData\theCountrySetting.sct
MD5
a7e136eac7a8e4bbbe6194cf4635237f

SHA1
044d7d20c15106ec79ef2f69d1337904c6cbf478

SHA256
080261942e0069275b193611c4563ea753a143f608aba5d797d49d131ff72e38

SHA512
b6182347eb4a0f5f2a026c72eae35846f8f789b7aea543d37699a50c6827617403c6137f38380186c36eed8632fed075355c707d055c7bce0cc76fb6d674a853

Download Submit
\ProgramData\qInconsistentFormula.dll
MD5
2b041349b4d1d04617a46340260ee214

SHA1
762ae3523e74aaa953d7b709f292910c5d2d3420

SHA256
e0a1bef90aa90e68056306d0d0fe03043db0ba0eff2d7f63819133631302bff3

SHA512
fbabe4b984d70ce72435abdb02fac0fb2c8c670044a5419d8519dd4f938b7d7e485cb5aa9738fff68f0d4d88a9246cb444ef415ece5f38a86bdbf99d233b7322

Download Submit
memory/2316-280-0x00000000031F0000-0x00000000031F6000-memory.dmp

Filesize
24KB

Download
memory/2316-278-0x0000000073880000-0x00000000738B0000-memory.dmp

Filesize
192KB

Download
memory/2316-276-0x0000000000000000-mapping.dmp

Download
memory/2752-274-0x0000000000000000-mapping.dmp

Download
memory/4616-264-0x0000000000000000-mapping.dmp

Download
memory/4796-117-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4796-122-0x00007FFD8F0A0000-0x00007FFD9018E000-memory.dmp

Filesize
16.9MB

Download
memory/4796-114-0x00007FF765510000-0x00007FF768AC6000-memory.dmp

Filesize
53.7MB

Download
memory/4796-121-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4796-118-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4796-123-0x0000020AF2340000-0x0000020AF4235000-memory.dmp

Filesize
31.0MB

Download
memory/4796-116-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4796-115-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4796-81846-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4796-81849-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4796-81848-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4796-81852-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads