dridex | 4b1f2c18b149fd0e878c362ffba50bb553d7bea93a795b33e398d032dc0b7663

General

Target

w5ossf6nf.exe
Size

360KB
MD5

c966ec47c0480c3a6be2a1231a83c8a1
SHA1

b15e12449be1ea174dfd224935fa6d78e1c58f5a
SHA256

4b1f2c18b149fd0e878c362ffba50bb553d7bea93a795b33e398d032dc0b7663
SHA512

35b3b6e9aebaa447f2cbf6a9fb7d24985475870285c6ea1bde7b8ccfd3ea956761691e44103d391ec89d8af6f43d73627a09c1c36b19f24caeab1453edd69f5e

Score

10^/10

dridex smokeloader 10444 backdoor botnet cryptone loader packer trojan

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://penodux.com/xsmkld/index.php

http://tommusikirtyur.com/xsmkld/index.php

http://ploaernysannyer.com/xsmkld/index.php

http://dersmasfannyer.com/xsmkld/index.php

http://derdsgdannyer.com/xsmkld/index.php

rc4.i32

Extracted

Family

dridex

Botnet

10444

C2

175.126.167.148:443

173.249.20.233:8043

162.241.204.233:4443

138.122.143.40:8043

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

CryptOne packer 2 IoCs

Detects CryptOne packer defined in NCC blogpost.

cryptone packer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\CF18.dll	cryptone
\Users\Admin\AppData\Local\Temp\CF18.dll	cryptone

Dridex Loader 2 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/996-9-0x0000000004170000-0x00000000041AD000-memory.dmp	dridex_ldr
behavioral2/memory/3596-148-0x0000000010000000-0x000000001001D000-memory.dmp	dridex_ldr

Executes dropped EXE 1 IoCs

Processes:

D728.exe

pid process

3596 D728.exe
Deletes itself 1 IoCs

Processes:

pid process

3024
Loads dropped DLL 2 IoCs

Processes:

w5ossf6nf.exeregsvr32.exe

pid process

424 w5ossf6nf.exe
996 regsvr32.exe

pid	process
3596	D728.exe

pid	process
3024

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

w5ossf6nf.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	w5ossf6nf.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	w5ossf6nf.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	w5ossf6nf.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

w5ossf6nf.exe

pid	process
424	w5ossf6nf.exe
424	w5ossf6nf.exe
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
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3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024

Suspicious behavior: MapViewOfSection 13 IoCs

Processes:

w5ossf6nf.exe

pid process

424 w5ossf6nf.exe
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024
3024

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

regsvr32.exe

description	pid	process	target process
PID 3024 wrote to memory of 344	3024		regsvr32.exe
PID 3024 wrote to memory of 344	3024		regsvr32.exe
PID 344 wrote to memory of 996	344	regsvr32.exe	regsvr32.exe
PID 344 wrote to memory of 996	344	regsvr32.exe	regsvr32.exe
PID 344 wrote to memory of 996	344	regsvr32.exe	regsvr32.exe
PID 3024 wrote to memory of 3596	3024		D728.exe
PID 3024 wrote to memory of 3596	3024		D728.exe
PID 3024 wrote to memory of 3596	3024		D728.exe
PID 3024 wrote to memory of 192	3024		explorer.exe
PID 3024 wrote to memory of 192	3024		explorer.exe
PID 3024 wrote to memory of 192	3024		explorer.exe
PID 3024 wrote to memory of 192	3024		explorer.exe
PID 3024 wrote to memory of 1272	3024		explorer.exe
PID 3024 wrote to memory of 1272	3024		explorer.exe
PID 3024 wrote to memory of 1272	3024		explorer.exe
PID 3024 wrote to memory of 3816	3024		explorer.exe
PID 3024 wrote to memory of 3816	3024		explorer.exe
PID 3024 wrote to memory of 3816	3024		explorer.exe
PID 3024 wrote to memory of 3816	3024		explorer.exe
PID 3024 wrote to memory of 4012	3024		explorer.exe
PID 3024 wrote to memory of 4012	3024		explorer.exe
PID 3024 wrote to memory of 4012	3024		explorer.exe
PID 3024 wrote to memory of 4012	3024		explorer.exe
PID 3024 wrote to memory of 2212	3024		explorer.exe
PID 3024 wrote to memory of 2212	3024		explorer.exe
PID 3024 wrote to memory of 2212	3024		explorer.exe
PID 3024 wrote to memory of 3464	3024		explorer.exe
PID 3024 wrote to memory of 3464	3024		explorer.exe
PID 3024 wrote to memory of 3464	3024		explorer.exe

C:\Users\Admin\AppData\Local\Temp\w5ossf6nf.exe
"C:\Users\Admin\AppData\Local\Temp\w5ossf6nf.exe"
1⤵
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:424

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\CF18.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:344

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\CF18.dll
2⤵
- Loads dropped DLL
PID:996

C:\Users\Admin\AppData\Local\Temp\D728.exe
C:\Users\Admin\AppData\Local\Temp\D728.exe
1⤵
- Executes dropped EXE
PID:3596

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:192

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:1272

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:3816

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:4012

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:2212

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:3464

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CF18.dll
MD5
0ca63fc69b7983bbecce6722abff8e86

SHA1
f63b03836896bbb8a19baac85c05ca8a9e73054b

SHA256
2f38ab60dc994e973ed1269a8d0c0e534235f2e39c29af52f899ecf089908dc1

SHA512
34348595fa082d26961731c8fac19719c2a1998b308e8dc68be4435a23f61feb2f5131d660dce9f581ad6dd169a48ffe6c717a7212ec0d666fe08a3676e70e91

Download Submit
C:\Users\Admin\AppData\Local\Temp\D728.exe
MD5
2f66e11030122a8e381f5806543f45a2

SHA1
8760dae8485027db5d36bfb634b438f1f433e842

SHA256
30ce3fd6112a662fe576a70816ffab8f9c0b1cabe93ab14c1a5cd85d3a37b510

SHA512
d9ee3eb3b21042a114b06fb3e949771662ae5e08a691336c8080f315640250e3f50f48127b5fab8ba8ad2298e9e97ff4bbe9dbea0022d48a9eb2ab566e726292

Download Submit
C:\Users\Admin\AppData\Local\Temp\D728.exe
MD5
2f66e11030122a8e381f5806543f45a2

SHA1
8760dae8485027db5d36bfb634b438f1f433e842

SHA256
30ce3fd6112a662fe576a70816ffab8f9c0b1cabe93ab14c1a5cd85d3a37b510

SHA512
d9ee3eb3b21042a114b06fb3e949771662ae5e08a691336c8080f315640250e3f50f48127b5fab8ba8ad2298e9e97ff4bbe9dbea0022d48a9eb2ab566e726292

Download Submit
\Users\Admin\AppData\Local\Temp\45E1.tmp
MD5
50741b3f2d7debf5d2bed63d88404029

SHA1
56210388a627b926162b36967045be06ffb1aad3

SHA256
f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c

SHA512
fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3

Download Submit
\Users\Admin\AppData\Local\Temp\CF18.dll
MD5
0ca63fc69b7983bbecce6722abff8e86

SHA1
f63b03836896bbb8a19baac85c05ca8a9e73054b

SHA256
2f38ab60dc994e973ed1269a8d0c0e534235f2e39c29af52f899ecf089908dc1

SHA512
34348595fa082d26961731c8fac19719c2a1998b308e8dc68be4435a23f61feb2f5131d660dce9f581ad6dd169a48ffe6c717a7212ec0d666fe08a3676e70e91

Download Submit
memory/192-26-0x0000000000770000-0x00000000007DB000-memory.dmp

Filesize
428KB

Download
memory/192-14-0x0000000000000000-mapping.dmp

Download
memory/344-2-0x0000000000000000-mapping.dmp

Download
memory/996-4-0x0000000000000000-mapping.dmp

Download
memory/996-9-0x0000000004170000-0x00000000041AD000-memory.dmp

Filesize
244KB

Download
memory/1272-40-0x0000000000730000-0x0000000000737000-memory.dmp

Filesize
28KB

Download
memory/1272-38-0x0000000000720000-0x000000000072C000-memory.dmp

Filesize
48KB

Download
memory/1272-35-0x0000000000000000-mapping.dmp

Download
memory/1732-273-0x0000000000E60000-0x0000000000E82000-memory.dmp

Filesize
136KB

Download
memory/1732-267-0x0000000000E30000-0x0000000000E57000-memory.dmp

Filesize
156KB

Download
memory/1732-255-0x0000000000000000-mapping.dmp

Download
memory/1932-372-0x0000000000C90000-0x0000000000C9D000-memory.dmp

Filesize
52KB

Download
memory/1932-378-0x0000000000CA0000-0x0000000000CA7000-memory.dmp

Filesize
28KB

Download
memory/1932-360-0x0000000000000000-mapping.dmp

Download
memory/2212-130-0x0000000000000000-mapping.dmp

Download
memory/2212-137-0x0000000000BE0000-0x0000000000BEE000-memory.dmp

Filesize
56KB

Download
memory/2212-140-0x0000000000BF0000-0x0000000000BF9000-memory.dmp

Filesize
36KB

Download
memory/2752-210-0x0000000000000000-mapping.dmp

Download
memory/2752-226-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2752-220-0x0000000000610000-0x000000000061C000-memory.dmp

Filesize
48KB

Download
memory/2864-318-0x0000000000000000-mapping.dmp

Download
memory/2864-330-0x0000000000AF0000-0x0000000000AFB000-memory.dmp

Filesize
44KB

Download
memory/2864-337-0x0000000000B00000-0x0000000000B06000-memory.dmp

Filesize
24KB

Download
memory/3024-11-0x0000000002B00000-0x0000000002B75000-memory.dmp

Filesize
468KB

Download
memory/3024-200-0x00000000012A0000-0x00000000012AC000-memory.dmp

Filesize
48KB

Download
memory/3024-242-0x00000000012A0000-0x00000000012AC000-memory.dmp

Filesize
48KB

Download
memory/3024-248-0x00000000012A0000-0x00000000012AC000-memory.dmp

Filesize
48KB

Download
memory/3024-1-0x0000000001030000-0x0000000001046000-memory.dmp

Filesize
88KB

Download
memory/3024-10-0x0000000001290000-0x00000000012FB000-memory.dmp

Filesize
428KB

Download
memory/3024-350-0x00000000012A0000-0x00000000012AC000-memory.dmp

Filesize
48KB

Download
memory/3464-183-0x00000000005A0000-0x00000000005A5000-memory.dmp

Filesize
20KB

Download
memory/3464-178-0x0000000000590000-0x0000000000599000-memory.dmp

Filesize
36KB

Download
memory/3464-167-0x0000000000000000-mapping.dmp

Download
memory/3596-148-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/3596-6-0x0000000000000000-mapping.dmp

Download
memory/3816-62-0x0000000000000000-mapping.dmp

Download
memory/3816-67-0x00000000007F0000-0x00000000007FB000-memory.dmp

Filesize
44KB

Download
memory/3816-68-0x0000000000A00000-0x0000000000A0A000-memory.dmp

Filesize
40KB

Download
memory/4012-97-0x0000000000000000-mapping.dmp

Download
memory/4012-105-0x0000000000EA0000-0x0000000000EA7000-memory.dmp

Filesize
28KB

Download
memory/4012-102-0x0000000000E90000-0x0000000000E9B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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