dridex | 6566f7a379e744ca6e006241bdc600bdcd09c17dc48f61f13f9d9b11b86f9483

General

Target

2c13b06a4c6d4d880060037edf641ad5.xls
Size

659KB
MD5

2c13b06a4c6d4d880060037edf641ad5
SHA1

835dbe95edd096c6800d75054f7e8d62999248fc
SHA256

6566f7a379e744ca6e006241bdc600bdcd09c17dc48f61f13f9d9b11b86f9483
SHA512

c904bce7a1fc20845a7fb824699bfe16205fa74bc0a396756ebe998d2d1785a84579899ff24c19338e606ef766e7c5315c10cb4397ac36265ead8ffbf3280aac

Score

10^/10

dridex 22201 botnet evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

22201

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	3296	3908	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/740-275-0x0000000073B70000-0x0000000073BA0000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

15 3296 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

740 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
15	3296	mshta.exe

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

3908 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

3908 EXCEL.EXE
3908 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXEmshta.exerundll32.exe

description	pid	process	target process
PID 3908 wrote to memory of 3296	3908	EXCEL.EXE	mshta.exe
PID 3908 wrote to memory of 3296	3908	EXCEL.EXE	mshta.exe
PID 3296 wrote to memory of 3372	3296	mshta.exe	rundll32.exe
PID 3296 wrote to memory of 3372	3296	mshta.exe	rundll32.exe
PID 3372 wrote to memory of 740	3372	rundll32.exe	rundll32.exe
PID 3372 wrote to memory of 740	3372	rundll32.exe	rundll32.exe
PID 3372 wrote to memory of 740	3372	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\2c13b06a4c6d4d880060037edf641ad5.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3908

C:\Windows\SYSTEM32\mshta.exe
mshta C:\ProgramData//klClipboardFormatLinkSourceDesc.sct
2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3296

C:\Windows\SYSTEM32\rundll32.exe
rundll32.exe C:\ProgramData\qPatternCrissCross.dll,SetRealTimeUsage
3⤵
- Suspicious use of WriteProcessMemory
PID:3372

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\ProgramData\qPatternCrissCross.dll,SetRealTimeUsage
4⤵
- Loads dropped DLL
- Checks whether UAC is enabled
PID:740

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\klClipboardFormatLinkSourceDesc.sct
MD5
454f42662ac7c0c99786c84767774649

SHA1
2429674151cb239a36628880099ec80d2619311d

SHA256
c62c48f57e10e1032703fcb7ed95d6c0a74f1f3b3d69b4bbb5e260a3f7a4d4f5

SHA512
7404b5e71ef40d9948b20946ddd752bbd618d9ecd87189972eac02310a8583b4c08090f6c82345d2e29f7e1232fd29b19b778f69cc929c1422c7a96bf1be270f

Download Submit
C:\ProgramData\qPatternCrissCross.dll
MD5
adb1d947f0901a4f3cb0b8ad1a6ee385

SHA1
b82715bbeab52f75dd44f6396593111ae242632c

SHA256
55bc0af1e99d0310ea3e8668aba02e4d3aa3c800b85fe304a6377968a4668cc1

SHA512
7eea926f405b066917262ad31e109773c40373e6254a25e2b25c53175a8ca7aabc66e275672af38e45eabcd2080f8236078f709ed0332a092cc41b5afea5a606

Download Submit
\ProgramData\qPatternCrissCross.dll
MD5
adb1d947f0901a4f3cb0b8ad1a6ee385

SHA1
b82715bbeab52f75dd44f6396593111ae242632c

SHA256
55bc0af1e99d0310ea3e8668aba02e4d3aa3c800b85fe304a6377968a4668cc1

SHA512
7eea926f405b066917262ad31e109773c40373e6254a25e2b25c53175a8ca7aabc66e275672af38e45eabcd2080f8236078f709ed0332a092cc41b5afea5a606

Download Submit
memory/740-277-0x0000000000800000-0x00000000008AE000-memory.dmp

Filesize
696KB

Download
memory/740-275-0x0000000073B70000-0x0000000073BA0000-memory.dmp

Filesize
192KB

Download
memory/740-273-0x0000000000000000-mapping.dmp

Download
memory/3296-261-0x0000000000000000-mapping.dmp

Download
memory/3372-271-0x0000000000000000-mapping.dmp

Download
memory/3908-123-0x00007FF842F60000-0x00007FF844E55000-memory.dmp

Filesize
31.0MB

Download
memory/3908-122-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-114-0x00007FF79C370000-0x00007FF79F926000-memory.dmp

Filesize
53.7MB

Download
memory/3908-121-0x00007FF844E60000-0x00007FF845F4E000-memory.dmp

Filesize
16.9MB

Download
memory/3908-118-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-117-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-116-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-115-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-107207-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-107209-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-107206-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-107212-0x00007FF824490000-0x00007FF8244A0000-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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