dridex | f3e5445bf8a1e7d8b66987427dc35f56c1f9e4b8510d5a57ca9639916a83bf6f

Analysis

max time kernel
149s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/03/2024, 12:00

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General

Target

f3e5445bf8a1e7d8b66987427dc35f56c1f9e4b8510d5a57ca9639916a83bf6f.dll
Size

744KB
MD5

6879c63919a9ad0dc300ee03dae01390
SHA1

6216e83b03304b73ce6ab635bb1fd37b47eb112f
SHA256

f3e5445bf8a1e7d8b66987427dc35f56c1f9e4b8510d5a57ca9639916a83bf6f
SHA512

d8095a00c8f87f1a6345580dfff6bc34e02d61cbc481ee4f0f90649dbaa5d5e4f4c729cc2ec9f26dba6c0ded505c5e9046b325431de69ca8b38b8faf08257c88
SSDEEP

12288:iBim9Tnts08FbKuPcA8NAc1l/XkGaZKoRQIpRX2/0Ak2ng/Zi66wNdufAdN:O/nts0Q9K/0ooRQIxAk2wi0N/

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/1088-4-0x00000000024B0000-0x00000000024B1000-memory.dmp	dridex_stager_shellcode

Dridex payload 12 IoCs

Detects Dridex x64 core DLL in memory.

botnet payload

resource	yara_rule
behavioral1/memory/2992-1-0x000007FEF76F0000-0x000007FEF77AA000-memory.dmp	dridex_payload
behavioral1/memory/1088-23-0x0000000140000000-0x00000001400BA000-memory.dmp	dridex_payload
behavioral1/memory/1088-31-0x0000000140000000-0x00000001400BA000-memory.dmp	dridex_payload
behavioral1/memory/1088-43-0x0000000140000000-0x00000001400BA000-memory.dmp	dridex_payload
behavioral1/memory/1088-42-0x0000000140000000-0x00000001400BA000-memory.dmp	dridex_payload
behavioral1/memory/2992-51-0x000007FEF76F0000-0x000007FEF77AA000-memory.dmp	dridex_payload
behavioral1/memory/2488-59-0x000007FEF77B0000-0x000007FEF786B000-memory.dmp	dridex_payload
behavioral1/memory/2488-64-0x000007FEF77B0000-0x000007FEF786B000-memory.dmp	dridex_payload
behavioral1/memory/2640-77-0x000007FEF65B0000-0x000007FEF666B000-memory.dmp	dridex_payload
behavioral1/memory/2640-81-0x000007FEF65B0000-0x000007FEF666B000-memory.dmp	dridex_payload
behavioral1/memory/2220-94-0x000007FEF6700000-0x000007FEF67BC000-memory.dmp	dridex_payload
behavioral1/memory/2220-99-0x000007FEF6700000-0x000007FEF67BC000-memory.dmp	dridex_payload

Executes dropped EXE 3 IoCs

pid	Process
2488	msra.exe
2640	irftp.exe
2220	rrinstaller.exe

Loads dropped DLL 7 IoCs

pid	Process
1088	Process not Found
2488	msra.exe
1088	Process not Found
2640	irftp.exe
1088	Process not Found
2220	rrinstaller.exe
1088	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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Javhf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\75F4PUqO0\\irftp.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	rrinstaller.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	msra.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	irftp.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2992	rundll32.exe
2992	rundll32.exe
2992	rundll32.exe
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found
1088	Process not Found

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 2464	1088	Process not Found	28
PID 1088 wrote to memory of 2464	1088	Process not Found	28
PID 1088 wrote to memory of 2464	1088	Process not Found	28
PID 1088 wrote to memory of 2488	1088	Process not Found	29
PID 1088 wrote to memory of 2488	1088	Process not Found	29
PID 1088 wrote to memory of 2488	1088	Process not Found	29
PID 1088 wrote to memory of 2748	1088	Process not Found	30
PID 1088 wrote to memory of 2748	1088	Process not Found	30
PID 1088 wrote to memory of 2748	1088	Process not Found	30
PID 1088 wrote to memory of 2640	1088	Process not Found	31
PID 1088 wrote to memory of 2640	1088	Process not Found	31
PID 1088 wrote to memory of 2640	1088	Process not Found	31
PID 1088 wrote to memory of 1844	1088	Process not Found	32
PID 1088 wrote to memory of 1844	1088	Process not Found	32
PID 1088 wrote to memory of 1844	1088	Process not Found	32
PID 1088 wrote to memory of 2220	1088	Process not Found	33
PID 1088 wrote to memory of 2220	1088	Process not Found	33
PID 1088 wrote to memory of 2220	1088	Process not Found	33

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\f3e5445bf8a1e7d8b66987427dc35f56c1f9e4b8510d5a57ca9639916a83bf6f.dll,#1
1⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:2992

C:\Windows\system32\msra.exe
C:\Windows\system32\msra.exe
1⤵
PID:2464

C:\Users\Admin\AppData\Local\BBUd6e\msra.exe
C:\Users\Admin\AppData\Local\BBUd6e\msra.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2488

C:\Windows\system32\irftp.exe
C:\Windows\system32\irftp.exe
1⤵
PID:2748

C:\Users\Admin\AppData\Local\myCzQBVK\irftp.exe
C:\Users\Admin\AppData\Local\myCzQBVK\irftp.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2640

C:\Windows\system32\rrinstaller.exe
C:\Windows\system32\rrinstaller.exe
1⤵
PID:1844

C:\Users\Admin\AppData\Local\i2Aww\rrinstaller.exe
C:\Users\Admin\AppData\Local\i2Aww\rrinstaller.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2220

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\BBUd6e\Secur32.dll

Filesize
748KB

MD5
1142e169401b181a6e5f81a9082af140

SHA1
549c140a17257c26ca8e82109751bace40230c44

SHA256
98a357f4a776652bf2ab4e9d82f0996fabdd46d634bc67ebd57f070d93ce60bc

SHA512
a32b592b2325ead177cc6bf2f8454d0353ed45ec965c1014dc6d2d04e53562644b02b74d4e29f0a3d7da34b6bc14bb528b3c9f1ebf41d53b99ede34315fcef04

Download Submit
C:\Users\Admin\AppData\Local\i2Aww\MFPlat.DLL

Filesize
752KB

MD5
2b6cb738db847064717c3d9742c0e2ab

SHA1
30f1e42e652b82aaf3b4141a88b50b314fd786f1

SHA256
230751d0cec18725c52df20a5a2b801ff7e9c63e31f6cd28b4ef749f1505dc97

SHA512
d48852acd622763a280e7b7f5efb64dbbcd1e4db12ef4d64e83c607658a7c1adfa3033cb0c64dc9a29a526b0505e28601685b9e5e77b4174a32f864554857926

Download Submit
C:\Users\Admin\AppData\Local\i2Aww\rrinstaller.exe

Filesize
54KB

MD5
0d3a73b0b30252680b383532f1758649

SHA1
9f098d2037e4dd94eca6d04c37b3d4ad8b0cc931

SHA256
fc8a992b6ac311e1b1491ec3e31e273a41f7fdf3f68176321307b68489a03fbc

SHA512
a7961f4d8d0e07959d1501d721c7751b01af6704c7da5c1f31e40de5372ee6a1fce2f3e0077c8e6a1bed017e11ce4be9b0d17c04e30b222fb3f0df67b870b2d4

Download Submit
C:\Users\Admin\AppData\Local\myCzQBVK\WTSAPI32.dll

Filesize
748KB

MD5
89256f88e951a9af097e835390c11a08

SHA1
701638da5e3745218f533d23e8790e91812f4a3c

SHA256
04d3652eb4ca7dbe9c348a98a6f5cfcb8251ee3a010766f203d08d12db118c01

SHA512
91c7e1044e2da8fc242d546b6a14802333d8b6339c405146e4028941b22438d5dd4c263e1afaba5ea2af2fda0c12b160fbfb294b3f78d7af6476eeb1112d0b6e

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

Filesize
1KB

MD5
8a240b9c6d702e4f171ba1b4ae5c4747

SHA1
3872e419b99b7824ca047f89b53ef9cbde170df4

SHA256
65bdc1c358dc4d06e20895365031fd30db66ab2224225251f000c55b788d21e2

SHA512
5e4c62e1b9737c7ef22b777c63f31ebdf2187027eced4504735860534c7b7289129f895244822bdbd58c0f9260ca05986abf7bd5b85266bb11fc046de4d9302e

Download Submit
\Users\Admin\AppData\Local\BBUd6e\msra.exe

Filesize
636KB

MD5
e79df53bad587e24b3cf965a5746c7b6

SHA1
87a97ec159a3fc1db211f3c2c62e4d60810e7a70

SHA256
4e7c22648acf664ab13dfeb2dc062ae90af1e6c621186981f395fb279bbc9b9d

SHA512
9a329c39ce0bc5aede01e96c4190cc7ccd17729fbc3a2b6df73057be8efaa3fa92cfef6e26a25bde6f7f94f64f6d6d0e4c5459aef2aead367e43178dd275acfb

Download Submit
\Users\Admin\AppData\Local\myCzQBVK\irftp.exe

Filesize
192KB

MD5
0cae1fb725c56d260bfd6feba7ae9a75

SHA1
102ac676a1de3ec3d56401f8efd518c31c8b0b80

SHA256
312f4107ff37dc988d99c5f56178708bb74a3906740cff4e337c0dde8f1e151d

SHA512
db969064577c4158d6bf925354319766b0d0373ddefb03dbfc9a9d2cadf8ddcd50a7f99b7ddf2ffad5e7fdbb6f02090b5b678bdf792d265054bff3b56ee0b8ec

Download Submit
memory/1088-11-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-7-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-21-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-20-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-19-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-33-0x0000000077AB0000-0x0000000077AB2000-memory.dmp

Filesize
8KB

Download
memory/1088-32-0x0000000077A80000-0x0000000077A82000-memory.dmp

Filesize
8KB

Download
memory/1088-31-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-43-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-42-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-16-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-15-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-14-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-13-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-12-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-3-0x0000000077716000-0x0000000077717000-memory.dmp

Filesize
4KB

Download
memory/1088-10-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-9-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-8-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-23-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-6-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-4-0x00000000024B0000-0x00000000024B1000-memory.dmp

Filesize
4KB

Download
memory/1088-24-0x0000000002490000-0x0000000002497000-memory.dmp

Filesize
28KB

Download
memory/1088-22-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-86-0x0000000077716000-0x0000000077717000-memory.dmp

Filesize
4KB

Download
memory/1088-17-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/1088-18-0x0000000140000000-0x00000001400BA000-memory.dmp

Filesize
744KB

Download
memory/2220-94-0x000007FEF6700000-0x000007FEF67BC000-memory.dmp

Filesize
752KB

Download
memory/2220-96-0x0000000000100000-0x0000000000107000-memory.dmp

Filesize
28KB

Download
memory/2220-99-0x000007FEF6700000-0x000007FEF67BC000-memory.dmp

Filesize
752KB

Download
memory/2488-64-0x000007FEF77B0000-0x000007FEF786B000-memory.dmp

Filesize
748KB

Download
memory/2488-61-0x0000000000120000-0x0000000000127000-memory.dmp

Filesize
28KB

Download
memory/2488-59-0x000007FEF77B0000-0x000007FEF786B000-memory.dmp

Filesize
748KB

Download
memory/2640-76-0x00000000002A0000-0x00000000002A7000-memory.dmp

Filesize
28KB

Download
memory/2640-77-0x000007FEF65B0000-0x000007FEF666B000-memory.dmp

Filesize
748KB

Download
memory/2640-81-0x000007FEF65B0000-0x000007FEF666B000-memory.dmp

Filesize
748KB

Download
memory/2992-51-0x000007FEF76F0000-0x000007FEF77AA000-memory.dmp

Filesize
744KB

Download
memory/2992-0-0x0000000001CF0000-0x0000000001CF7000-memory.dmp

Filesize
28KB

Download
memory/2992-1-0x000007FEF76F0000-0x000007FEF77AA000-memory.dmp

Filesize
744KB

Download