dridex | 4bc9550e00f42cfe69cc3750a41fc7d91ddcf9a48017301742fb8f4ba472e1e3

Analysis

max time kernel
149s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
12-10-2024 14:27

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General

Target

4bc9550e00f42cfe69cc3750a41fc7d91ddcf9a48017301742fb8f4ba472e1e3.dll
Size

1.1MB
MD5

406c44e26b3195a9d4fdc75506e5d5ef
SHA1

28abcfeeda814a917380d166fcd0aa8671fc4628
SHA256

4bc9550e00f42cfe69cc3750a41fc7d91ddcf9a48017301742fb8f4ba472e1e3
SHA512

80f7ea16ae8b1c674c80f87da2ebfbac1b4f952eb382e6ff2b7e2ebf53a7088ef13df3d92dad5aa15d698f0370138b784dc38f3ba3d02211bfc6eb42e6e780f6
SSDEEP

12288:hkMZ+g4TyilMqFvPIV93i/S0hzmOBt5nihfSxI/mhjEvqJ0D/eAQsroXAkH64C:hkMZ+gf4ltGd8H1fYO0q2G1Ah

Score

10^/10

dridex botnet evasion payload persistence trojan

Malware Config

Signatures

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

Dridex Shellcode 1 IoCs

Detects Dridex Payload shellcode injected in Explorer process.

botnet payload

resource	yara_rule
behavioral1/memory/1196-4-0x00000000024F0000-0x00000000024F1000-memory.dmp	dridex_stager_shellcode

Dridex payload 9 IoCs

Detects Dridex x64 core DLL in memory.

botnet payload

resource	yara_rule
behavioral1/memory/2080-0-0x0000000140000000-0x000000014011D000-memory.dmp	dridex_payload
behavioral1/memory/1196-24-0x0000000140000000-0x000000014011D000-memory.dmp	dridex_payload
behavioral1/memory/1196-35-0x0000000140000000-0x000000014011D000-memory.dmp	dridex_payload
behavioral1/memory/1196-36-0x0000000140000000-0x000000014011D000-memory.dmp	dridex_payload
behavioral1/memory/2080-44-0x0000000140000000-0x000000014011D000-memory.dmp	dridex_payload
behavioral1/memory/2556-53-0x0000000140000000-0x000000014011E000-memory.dmp	dridex_payload
behavioral1/memory/2556-58-0x0000000140000000-0x000000014011E000-memory.dmp	dridex_payload
behavioral1/memory/2944-75-0x0000000140000000-0x000000014011E000-memory.dmp	dridex_payload
behavioral1/memory/2820-91-0x0000000140000000-0x000000014011E000-memory.dmp	dridex_payload

Executes dropped EXE 3 IoCs

pid	Process
2556	dvdupgrd.exe
2944	iexpress.exe
2820	spinstall.exe

Loads dropped DLL 7 IoCs

pid	Process
1196	Process not Found
2556	dvdupgrd.exe
1196	Process not Found
2944	iexpress.exe
1196	Process not Found
2820	spinstall.exe
1196	Process not Found

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcbsdqtxprcnbm = "C:\\Users\\Admin\\AppData\\Roaming\\MACROM~1\\FLASHP~1\\MACROM~1.COM\\support\\FLASHP~1\\sys\\TJE\\iexpress.exe"	Process not Found

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	spinstall.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	dvdupgrd.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	iexpress.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2080	rundll32.exe
2080	rundll32.exe
2080	rundll32.exe
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
1196	Process not Found
2556	dvdupgrd.exe
2556	dvdupgrd.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 2604	1196	Process not Found	30
PID 1196 wrote to memory of 2604	1196	Process not Found	30
PID 1196 wrote to memory of 2604	1196	Process not Found	30
PID 1196 wrote to memory of 2556	1196	Process not Found	31
PID 1196 wrote to memory of 2556	1196	Process not Found	31
PID 1196 wrote to memory of 2556	1196	Process not Found	31
PID 1196 wrote to memory of 1112	1196	Process not Found	32
PID 1196 wrote to memory of 1112	1196	Process not Found	32
PID 1196 wrote to memory of 1112	1196	Process not Found	32
PID 1196 wrote to memory of 2944	1196	Process not Found	33
PID 1196 wrote to memory of 2944	1196	Process not Found	33
PID 1196 wrote to memory of 2944	1196	Process not Found	33
PID 1196 wrote to memory of 556	1196	Process not Found	34
PID 1196 wrote to memory of 556	1196	Process not Found	34
PID 1196 wrote to memory of 556	1196	Process not Found	34
PID 1196 wrote to memory of 2820	1196	Process not Found	35
PID 1196 wrote to memory of 2820	1196	Process not Found	35
PID 1196 wrote to memory of 2820	1196	Process not Found	35

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4bc9550e00f42cfe69cc3750a41fc7d91ddcf9a48017301742fb8f4ba472e1e3.dll,#1
1⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:2080

C:\Windows\system32\dvdupgrd.exe
C:\Windows\system32\dvdupgrd.exe
1⤵
PID:2604

C:\Users\Admin\AppData\Local\B0dC4\dvdupgrd.exe
C:\Users\Admin\AppData\Local\B0dC4\dvdupgrd.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:2556

C:\Windows\system32\iexpress.exe
C:\Windows\system32\iexpress.exe
1⤵
PID:1112

C:\Users\Admin\AppData\Local\3yVjz\iexpress.exe
C:\Users\Admin\AppData\Local\3yVjz\iexpress.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2944

C:\Windows\system32\spinstall.exe
C:\Windows\system32\spinstall.exe
1⤵
PID:556

C:\Users\Admin\AppData\Local\Z3jXzsV\spinstall.exe
C:\Users\Admin\AppData\Local\Z3jXzsV\spinstall.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\3yVjz\VERSION.dll

Filesize
1.1MB

MD5
296b3250705f2ced2a8dd1d80ea17075

SHA1
dd7ae8ad64283974a8fe222fab6baa62522ac071

SHA256
344ef7ce68eb90035325c459d85cd8c507ff41db561d827c784467fc6b3bab2b

SHA512
47f43693a0ab4af050b8cf04361108609cbacf1a0901290f19c7ffb2ed7f2eb7b5c735a44b5f48e73bafc4466c63e61cc06ac604d5b42548198449a3f9023249

Download Submit
C:\Users\Admin\AppData\Local\3yVjz\iexpress.exe

Filesize
163KB

MD5
46fd16f9b1924a2ea8cd5c6716cc654f

SHA1
99284bc91cf829e9602b4b95811c1d72977700b6

SHA256
9f993a1f6a133fa8375eab99bf1710471dd13ef177ef713acf8921fb4ff565a3

SHA512
52c91043f514f3f8ce07f8e60357786eb7236fcf6cdcccca0dd76000b9a23d6b138cebcdec53b01823cb2313ec850fc7bece326ec01d44ed33f4052b789b7629

Download Submit
C:\Users\Admin\AppData\Local\B0dC4\VERSION.dll

Filesize
1.1MB

MD5
bc6a7864818c96cc19eee63326a27e81

SHA1
6705479f1ced5c847e7bee3e5b7f10164ebf3deb

SHA256
35f04b5c484b1629d14b04d67fff8d3e8007af2167b41efd3dc146a4e1a3e06c

SHA512
f8a0783748155dc1bc2d7effa8020e4b4026524df6c5c7958be68fd2f73822348c981f5c99158d42f41365843f839aca492e996f88c9943d0aafb3808fe57185

Download Submit
C:\Users\Admin\AppData\Local\Z3jXzsV\wer.dll

Filesize
1.1MB

MD5
3463297b2a40ae881174e193bf31a002

SHA1
8982be4e7fc285f5943935fe117a2288d778885b

SHA256
99e0681af119d09a176ac21393afe5e323b7cad7839a617f2e378aa04092ddd8

SHA512
4935ea74049f8fbc929288970781cdec4d00ea7fc3dd4f72fc30cf30f9bbca7e4eb09eb316f93888683951f818462e6f409c3364db0ce80b678e83c971fb7511

Download Submit
C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\Ygxjfqh.lnk

Filesize
1KB

MD5
c12a32e4ab67e74e040a1a0806de7c32

SHA1
eec3d3992f56152d9137963d82f120c547f47e97

SHA256
1df5d41de3c7307895e8aa27daa52e03c5c76ba7155545817e5d406dc085db86

SHA512
858cb56f4f1c8daa3da1ed64811115012af8606aa87bb9adff921e7a1655eb56c8ea891be0834acdd0ff7a20a2d58d6fc2e3fd60f6c91dbe9951c54094c57918

Download Submit
\Users\Admin\AppData\Local\B0dC4\dvdupgrd.exe

Filesize
25KB

MD5
75a9b4172eac01d9648c6d2133af952f

SHA1
63c7e1af762d2b584e9cc841e8b0100f2a482b81

SHA256
18f9f520c7157023b0e7dfe7433a63c4dedd47b04d24aac4038b795893050736

SHA512
5a7a2c7f184efd9c84256a1a0a5e7aeb95432d63a567196be54e7a9437a5ada9b922983c5fc0cafb16eab4493665d8e56e2f646f9f6a2d6179986925ffcdf769

Download Submit
\Users\Admin\AppData\Local\Z3jXzsV\spinstall.exe

Filesize
584KB

MD5
29c1d5b330b802efa1a8357373bc97fe

SHA1
90797aaa2c56fc2a667c74475996ea1841bc368f

SHA256
048bd22abf158346ab991a377cc6e9d2b20b4d73ccee7656c96a41f657e7be7f

SHA512
66f4f75a04340a1dd55dfdcc3ff1103ea34a55295f56c12e88d38d1a41e5be46b67c98bd66ac9f878ce79311773e374ed2bce4dd70e8bb5543e4ec1dd56625ee

Download Submit
memory/1196-26-0x0000000077C30000-0x0000000077C32000-memory.dmp

Filesize
8KB

Download
memory/1196-3-0x0000000077996000-0x0000000077997000-memory.dmp

Filesize
4KB

Download
memory/1196-11-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-10-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-9-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-13-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-8-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-7-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-24-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-15-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-25-0x0000000077C00000-0x0000000077C02000-memory.dmp

Filesize
8KB

Download
memory/1196-35-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-36-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-12-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-45-0x0000000077996000-0x0000000077997000-memory.dmp

Filesize
4KB

Download
memory/1196-14-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/1196-23-0x00000000024D0000-0x00000000024D7000-memory.dmp

Filesize
28KB

Download
memory/1196-4-0x00000000024F0000-0x00000000024F1000-memory.dmp

Filesize
4KB

Download
memory/1196-6-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/2080-44-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/2080-0-0x0000000140000000-0x000000014011D000-memory.dmp

Filesize
1.1MB

Download
memory/2080-2-0x0000000000120000-0x0000000000127000-memory.dmp

Filesize
28KB

Download
memory/2556-58-0x0000000140000000-0x000000014011E000-memory.dmp

Filesize
1.1MB

Download
memory/2556-55-0x0000000000290000-0x0000000000297000-memory.dmp

Filesize
28KB

Download
memory/2556-53-0x0000000140000000-0x000000014011E000-memory.dmp

Filesize
1.1MB

Download
memory/2820-91-0x0000000140000000-0x000000014011E000-memory.dmp

Filesize
1.1MB

Download
memory/2944-70-0x00000000001A0000-0x00000000001A7000-memory.dmp

Filesize
28KB

Download
memory/2944-75-0x0000000140000000-0x000000014011E000-memory.dmp

Filesize
1.1MB

Download