dridex | b11c33ee5fd193e6548d14c2bde4865d30d6d5fd25135bc258cfd8595ae3695c

General

Target

f70c0885e76e57f37399d54b10f183ad.xls
Size

313KB
MD5

f70c0885e76e57f37399d54b10f183ad
SHA1

20548e3304d242789766edfe7c8c7d4e9ccd5b25
SHA256

b11c33ee5fd193e6548d14c2bde4865d30d6d5fd25135bc258cfd8595ae3695c
SHA512

5724457de05561b7e54380c3e3157f0f102084699c04340969394b03f6767e0d99a5e3f2a03871483ae7a3a2822e46a923ac85f433fdbfc64a56e6d93a763f6b

Score

10^/10

dridex 22202 botnet evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

22202

C2

178.238.236.59:443

104.245.52.73:5007

81.0.236.93:13786

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	1212	3680	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/3348-292-0x00000000736A0000-0x00000000736D1000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

17 1212 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3348 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
17	1212	mshta.exe

pid	process
3348	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3680 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXEmshta.exerundll32.exe

description	pid	process	target process
PID 3680 wrote to memory of 1212	3680	EXCEL.EXE	mshta.exe
PID 3680 wrote to memory of 1212	3680	EXCEL.EXE	mshta.exe
PID 1212 wrote to memory of 3456	1212	mshta.exe	rundll32.exe
PID 1212 wrote to memory of 3456	1212	mshta.exe	rundll32.exe
PID 3456 wrote to memory of 3348	3456	rundll32.exe	rundll32.exe
PID 3456 wrote to memory of 3348	3456	rundll32.exe	rundll32.exe
PID 3456 wrote to memory of 3348	3456	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\f70c0885e76e57f37399d54b10f183ad.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3680
- C:\Windows\SYSTEM32\mshta.exe
  mshta C:\ProgramData//klCylinderCol.sct
  2⤵
  - Process spawned unexpected child process
  - Blocklisted process makes network request
  - Suspicious use of WriteProcessMemory
  PID:1212
- - C:\Windows\SYSTEM32\rundll32.exe
    rundll32.exe C:\ProgramData\qSmartTagControlButton.dll,SetRealTimeUsage
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3456
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\ProgramData\qSmartTagControlButton.dll,SetRealTimeUsage
      4⤵
      Loads dropped DLL
      Checks whether UAC is enabled
      PID:3348

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\klCylinderCol.sct

MD5
6266b66d75cc153152d30f7a63452911

SHA1
baea6e86c331aca229b4a30377d2f5ddaa7f147f

SHA256
17c2979a15186f40d2108a415e89e4ca08a125db3b04a85aecd4f149e1f66fa2

SHA512
50d2728a86b53c4007be65f1dcc5397a09eb3089f92da24b7bcce273cabc9ac8936662ae4f728799af554a36e199a64550e3003bfbb14439b870b58f47c0e086

Download Submit
C:\ProgramData\qSmartTagControlButton.dll

MD5
145c6b9290b6cf598f4995a8a70da916

SHA1
11186a014fadd68d32a7cd76615c088c1adde213

SHA256
770cb2aa5ea76f90e27bc72110b531fa3985ab4352d25362926971285408f148

SHA512
849e06ac1b43183b6477c780eab57c15d8e533b14090e3b4c34bfbf26bbee2f54228f3bedab6b799b320acce72ac45bcf074ee8e04962c325d4ab385b7209087

Download Submit
\ProgramData\qSmartTagControlButton.dll

MD5
145c6b9290b6cf598f4995a8a70da916

SHA1
11186a014fadd68d32a7cd76615c088c1adde213

SHA256
770cb2aa5ea76f90e27bc72110b531fa3985ab4352d25362926971285408f148

SHA512
849e06ac1b43183b6477c780eab57c15d8e533b14090e3b4c34bfbf26bbee2f54228f3bedab6b799b320acce72ac45bcf074ee8e04962c325d4ab385b7209087

Download Submit
memory/1212-278-0x0000000000000000-mapping.dmp

Download
memory/3348-294-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/3348-292-0x00000000736A0000-0x00000000736D1000-memory.dmp

Filesize
196KB

Download
memory/3348-290-0x0000000000000000-mapping.dmp

Download
memory/3456-288-0x0000000000000000-mapping.dmp

Download
memory/3680-123-0x00007FF878B80000-0x00007FF87AA75000-memory.dmp

Filesize
31.0MB

Download
memory/3680-121-0x00007FF87AA80000-0x00007FF87BB6E000-memory.dmp

Filesize
16.9MB

Download
memory/3680-114-0x00007FF711840000-0x00007FF714DF6000-memory.dmp

Filesize
53.7MB

Download
memory/3680-122-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-118-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-117-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-116-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-115-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-102439-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-102443-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-102441-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-102445-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads