dridex | c83b1f21b3c13741c8047162999e5c60b7360342713f095719b22837eae0b01d

Analysis

max time kernel
59s
max time network
110s
platform
windows7_x64
resource
win7-20220414-en
submitted
26-06-2022 05:56

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General

Target

r6x7x6rf.dll
Size

864KB
MD5

d51dfce479bc8731a7489fabec3538c6
SHA1

4c45a11b9d18b243d5f7c9183cf316e6d545212d
SHA256

c83b1f21b3c13741c8047162999e5c60b7360342713f095719b22837eae0b01d
SHA512

f30007eb503775c908a2b4406f5c763257cf28c5935f7d9b74fab532ba299447e5c11470beb1fbfa773b92b92011e10b87948f91e715c60ac08517d808d48e57

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

131.100.24.192:443

103.6.213.203:6601

46.41.130.218:2303

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

2 1944 rundll32.exe
5 1944 rundll32.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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
2	1944	rundll32.exe
5	1944	rundll32.exe

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

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1648 wrote to memory of 1944	1648	rundll32.exe	rundll32.exe
PID 1648 wrote to memory of 1944	1648	rundll32.exe	rundll32.exe
PID 1648 wrote to memory of 1944	1648	rundll32.exe	rundll32.exe
PID 1648 wrote to memory of 1944	1648	rundll32.exe	rundll32.exe
PID 1648 wrote to memory of 1944	1648	rundll32.exe	rundll32.exe
PID 1648 wrote to memory of 1944	1648	rundll32.exe	rundll32.exe
PID 1648 wrote to memory of 1944	1648	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\r6x7x6rf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1648

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\r6x7x6rf.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1944

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1944-54-0x0000000000000000-mapping.dmp

Download
memory/1944-55-0x0000000075BA1000-0x0000000075BA3000-memory.dmp

Filesize
8KB

Download
memory/1944-56-0x0000000000690000-0x0000000000780000-memory.dmp

Filesize
960KB

Download
memory/1944-57-0x0000000000690000-0x00000000006CD000-memory.dmp

Filesize
244KB

Download
memory/1944-58-0x0000000000690000-0x0000000000780000-memory.dmp

Filesize
960KB

Download
memory/1944-60-0x0000000000690000-0x0000000000780000-memory.dmp

Filesize
960KB

Download
memory/1944-61-0x0000000000690000-0x0000000000780000-memory.dmp

Filesize
960KB

Download