dridex | e91ef291cf1abe85ece3bfba657823c7c6b731a2e7c78768be54c8917e45b7ba

Analysis

max time kernel
64s
max time network
149s
platform
windows10_x64
resource
win10-en-20211208
submitted
24-12-2021 10:07

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General

Target

e91ef291cf1abe85ece3bfba657823c7c6b731a2e7c78768be54c8917e45b7ba.dll
Size

552KB
MD5

9abb796b97292578b1337f8179154fe5
SHA1

d238558b4400f3eb92f3f3295dc98a009c6b0807
SHA256

e91ef291cf1abe85ece3bfba657823c7c6b731a2e7c78768be54c8917e45b7ba
SHA512

5acad1e43c981eaab3948a5c39b068a147bcaf6f3f3c7ad866c1e6634fa2b7b438e66ce268c59859abdd169883ed3456b5898e137b1bb5d30704eceb75fde7a0

Score

10^/10

dridex 22201 botnet loader

Malware Config

Extracted

Family

dridex

Botnet

22201

144.91.122.102:443

85.10.248.28:593

185.4.135.27:5228

80.211.3.13:8116

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/756-116-0x00000000735C0000-0x000000007364C000-memory.dmp	dridex_ldr

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

532 756 WerFault.exe rundll32.exe

pid	pid_target	process	target process
532	756	WerFault.exe	rundll32.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

WerFault.exe

pid	process
532	WerFault.exe
532	WerFault.exe
532	WerFault.exe
532	WerFault.exe
532	WerFault.exe
532	WerFault.exe
532	WerFault.exe
532	WerFault.exe
532	WerFault.exe
532	WerFault.exe
532	WerFault.exe
532	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 532 WerFault.exe
Token: SeBackupPrivilege 532 WerFault.exe
Token: SeDebugPrivilege 532 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	532	WerFault.exe
Token: SeBackupPrivilege	532	WerFault.exe
Token: SeDebugPrivilege	532	WerFault.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 3468 wrote to memory of 756	3468	rundll32.exe	rundll32.exe
PID 3468 wrote to memory of 756	3468	rundll32.exe	rundll32.exe
PID 3468 wrote to memory of 756	3468	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e91ef291cf1abe85ece3bfba657823c7c6b731a2e7c78768be54c8917e45b7ba.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3468

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e91ef291cf1abe85ece3bfba657823c7c6b731a2e7c78768be54c8917e45b7ba.dll,#1
2⤵
PID:756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 628
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:532

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/756-115-0x0000000000000000-mapping.dmp

Download
memory/756-116-0x00000000735C0000-0x000000007364C000-memory.dmp

Filesize
560KB

Download
memory/756-118-0x0000000003160000-0x0000000003166000-memory.dmp

Filesize
24KB

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