dridex | c7ee52bed09b62343a0a239526ff58285cd2d67ff2b598455b32c7e8721e559d

General

Target

f70346d437f79aed8085934da8051603.xls
Size

660KB
MD5

f70346d437f79aed8085934da8051603
SHA1

6293138e17910fe92b1a5094cd3c5489fd328360
SHA256

c7ee52bed09b62343a0a239526ff58285cd2d67ff2b598455b32c7e8721e559d
SHA512

caff8eabe4d2848781b6ec04b8661b76d9d9c25a055d816aa2bbac7bac91e76ae3fab084d867502019a6d59e58181908a3eacb71bbeb75d9ff369ca09e3df4d6

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	2868	3980	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/2076-294-0x00000000735D0000-0x0000000073601000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

20 2868 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

2076 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
20	2868	mshta.exe

pid	process
2076	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

3980 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXEmshta.exerundll32.exe

description	pid	process	target process
PID 3980 wrote to memory of 2868	3980	EXCEL.EXE	mshta.exe
PID 3980 wrote to memory of 2868	3980	EXCEL.EXE	mshta.exe
PID 2868 wrote to memory of 2152	2868	mshta.exe	rundll32.exe
PID 2868 wrote to memory of 2152	2868	mshta.exe	rundll32.exe
PID 2152 wrote to memory of 2076	2152	rundll32.exe	rundll32.exe
PID 2152 wrote to memory of 2076	2152	rundll32.exe	rundll32.exe
PID 2152 wrote to memory of 2076	2152	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\f70346d437f79aed8085934da8051603.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Windows\SYSTEM32\mshta.exe
  mshta C:\ProgramData//klYDMFormat.sct
  2⤵
  - Process spawned unexpected child process
  - Blocklisted process makes network request
  - Suspicious use of WriteProcessMemory
  PID:2868
- - C:\Windows\SYSTEM32\rundll32.exe
    rundll32.exe C:\ProgramData\qDBF2.dll,SetRealTimeUsage
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2152
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\ProgramData\qDBF2.dll,SetRealTimeUsage
      4⤵
      Loads dropped DLL
      Checks whether UAC is enabled
      PID:2076

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\klYDMFormat.sct

MD5
e60e6dfdc2a5bfe24acaf4c07acdbcb0

SHA1
8942230962358eb4cc0955223cde6b4d144dbe74

SHA256
6473b70a661c5b094ac388bc337f68645075ff18270d688e80d581493913394d

SHA512
3f09d1738ef1daa62c6fd3ac892516e7d186a894ae40f38192069a79eaead41a0ad72430741c686c9407b651d94d14b74db03a8b07e50f208c98ed16f96a082a

Download Submit
C:\ProgramData\qDBF2.dll

MD5
397b799c357562c5a8061a39514d7785

SHA1
80d3d5366f47d3462ea9e688f444066d7fce2a24

SHA256
2c54438f5d99d15e5df3965397e25a0fa17ca7f08d317eb4bf31d1268e10f020

SHA512
bbec10e5d321ee33184cb2b450296103333196e0d9b71c7066bdf6ef5ea011210f6c28ada19532cff1ad22df577e7b40a39b2fa1adabb525b91a1b19e097f70b

Download Submit
\ProgramData\qDBF2.dll

MD5
397b799c357562c5a8061a39514d7785

SHA1
80d3d5366f47d3462ea9e688f444066d7fce2a24

SHA256
2c54438f5d99d15e5df3965397e25a0fa17ca7f08d317eb4bf31d1268e10f020

SHA512
bbec10e5d321ee33184cb2b450296103333196e0d9b71c7066bdf6ef5ea011210f6c28ada19532cff1ad22df577e7b40a39b2fa1adabb525b91a1b19e097f70b

Download Submit
memory/2076-296-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2076-294-0x00000000735D0000-0x0000000073601000-memory.dmp

Filesize
196KB

Download
memory/2076-292-0x0000000000000000-mapping.dmp

Download
memory/2152-290-0x0000000000000000-mapping.dmp

Download
memory/2868-281-0x0000000000000000-mapping.dmp

Download
memory/3980-117-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Filesize
64KB

Download
memory/3980-122-0x00007FFF2E160000-0x00007FFF2F24E000-memory.dmp

Filesize
16.9MB

Download
memory/3980-114-0x00007FF6DE9C0000-0x00007FF6E1F76000-memory.dmp

Filesize
53.7MB

Download
memory/3980-121-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Filesize
64KB

Download
memory/3980-118-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Filesize
64KB

Download
memory/3980-123-0x000001C85BAF0000-0x000001C85D9E5000-memory.dmp

Filesize
31.0MB

Download
memory/3980-116-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Filesize
64KB

Download
memory/3980-115-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Filesize
64KB

Download
memory/3980-89576-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Filesize
64KB

Download
memory/3980-89578-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Filesize
64KB

Download
memory/3980-89579-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Filesize
64KB

Download
memory/3980-89582-0x00007FFF0E020000-0x00007FFF0E030000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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