dridex | ffcd3f21e103ef18413700ee91a9737900ea88fcae1607cffbf4d7f587039504

Analysis

max time kernel
70s
max time network
69s
platform
windows7_x64
resource
win7v20201028
submitted
30-11-2020 16:26

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General

Target

t6yswb.pdf.pellet.dll
Size

590KB
MD5

770df303f86ac191c177035c214589ee
SHA1

6cb4229559c3bcc16d33a92f81fef25b1840d750
SHA256

ffcd3f21e103ef18413700ee91a9737900ea88fcae1607cffbf4d7f587039504
SHA512

e23ccdc09dd516cad89f8a2c0f11fa23e64e1b1fcff63f4e56338d24b35ab33a972e99898b80c6ade51382443a3993c9254ebd349167380a0fc2e97687c4bcd9

Score

10^/10

dridex 10555 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10555

162.241.44.26:9443

192.232.229.53:4443

77.220.64.34:443

193.90.12.121:3098

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral1/memory/1644-3-0x0000000000400000-0x000000000043D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 1644 rundll32.exe
6 1644 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
3	1644	rundll32.exe
6	1644	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 1580 wrote to memory of 1644	1580	rundll32.exe	rundll32.exe
PID 1580 wrote to memory of 1644	1580	rundll32.exe	rundll32.exe
PID 1580 wrote to memory of 1644	1580	rundll32.exe	rundll32.exe
PID 1580 wrote to memory of 1644	1580	rundll32.exe	rundll32.exe
PID 1580 wrote to memory of 1644	1580	rundll32.exe	rundll32.exe
PID 1580 wrote to memory of 1644	1580	rundll32.exe	rundll32.exe
PID 1580 wrote to memory of 1644	1580	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\t6yswb.pdf.pellet.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1580

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\t6yswb.pdf.pellet.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1644

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/1220-4-0x000007FEF6780000-0x000007FEF69FA000-memory.dmp

Filesize
2.5MB

Download
memory/1644-2-0x0000000000000000-mapping.dmp

Download
memory/1644-3-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download