socks5systemz | 6f081e3c9c2e454e38c6331beb30e02af7d375bc6a0015a948fc7e830f79a4ea

General

Target

101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe
Size

4.8MB
MD5

749325286628ce27401c098690ebc0d7
SHA1

b2d6201c6c10fe35e3064c501ebf0b41334c065d
SHA256

101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca
SHA512

accc0f2186aba4be0df4869617b031ac6969f43958cc3e25343e05bef5aba741c2f9786dc79bceb2bf4a6cb85df5df927b1dfc680c923b88a66333ddafef3ea5
SSDEEP

98304:mqYKWcj3MsaT3u19x3VbfCEf/qe+oiVk/CdoyLwKYGjQ8Y5HJXDYZFZe:XYKWczdTlzCqYgCohKRQRN5QO

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

aasvbmg.ru

http://aasvbmg.ru/search/?q=67e28dd86f08f27d120eff4b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1fe8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff715c1ea959f3d

http://aasvbmg.ru/search/?q=67e28dd86f08f27d120eff4b7c27d78406abdd88be4b12eab517aa5c96bd86ef928044845a8bbc896c58e713bc90c94a36b5281fc235a925ed3e51d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee9d9e3ac86f9310

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1440-87-0x00000000009A0000-0x0000000000A42000-memory.dmp	family_socks5systemz
behavioral2/memory/1440-110-0x00000000009A0000-0x0000000000A42000-memory.dmp	family_socks5systemz
behavioral2/memory/1440-111-0x00000000009A0000-0x0000000000A42000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Executes dropped EXE 3 IoCs

Processes:

101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmpmoonvoiceassist32_64.exemoonvoiceassist32_64.exe

pid process

3356 101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp
3256 moonvoiceassist32_64.exe
1440 moonvoiceassist32_64.exe
Loads dropped DLL 1 IoCs

Processes:

101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp

pid process

3356 101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description ioc

Destination IP 91.211.247.248
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp

pid process

3356 101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp

pid	process
3356	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp
3256	moonvoiceassist32_64.exe
1440	moonvoiceassist32_64.exe

pid	process
3356	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp

description	ioc
Destination IP	91.211.247.248

pid	process
3356	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp

description	pid	process	target process
PID 4588 wrote to memory of 3356	4588	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp
PID 4588 wrote to memory of 3356	4588	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp
PID 4588 wrote to memory of 3356	4588	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp
PID 3356 wrote to memory of 3256	3356	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp	moonvoiceassist32_64.exe
PID 3356 wrote to memory of 3256	3356	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp	moonvoiceassist32_64.exe
PID 3356 wrote to memory of 3256	3356	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp	moonvoiceassist32_64.exe
PID 3356 wrote to memory of 1440	3356	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp	moonvoiceassist32_64.exe
PID 3356 wrote to memory of 1440	3356	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp	moonvoiceassist32_64.exe
PID 3356 wrote to memory of 1440	3356	101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp	moonvoiceassist32_64.exe

C:\Users\Admin\AppData\Local\Temp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe
"C:\Users\Admin\AppData\Local\Temp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4588

C:\Users\Admin\AppData\Local\Temp\is-4VIQL.tmp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp
"C:\Users\Admin\AppData\Local\Temp\is-4VIQL.tmp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp" /SL5="$B0048,4808638,54272,C:\Users\Admin\AppData\Local\Temp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3356

C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe
"C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe" -i
3⤵
- Executes dropped EXE
PID:3256

C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe
"C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe" -s
3⤵
- Executes dropped EXE
PID:1440

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe
Filesize
2.9MB

MD5
403fcb2628a9d2b8bf04e03f5b27eac7

SHA1
38e0c900bc31289d8c3194fb3b9f458290925e6d

SHA256
45f3121407742bf6c32e7a089a4b918f7850172238dbda30518645dedabbf164

SHA512
f9f1096eedb77386de0d20acd7534f145ce021a0242a0a541caf35317e72c78279a9776ace8fff8c7dcc527ab074a245a5d636c974621f5108426650df5f7da1

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4VIQL.tmp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp
Filesize
680KB

MD5
895d982b558dbe81e0d8d31e818f766e

SHA1
27d9e61b8edaf48db4c519be05f0f4ea33900a7a

SHA256
3c0328c6c8c37a3e81cb28c46eeb4c98f033eaf28326903ac6e7204d23928cfb

SHA512
4ab3f51fe1f4b7ce5bd6e21518de1ebae7b631bb4a968a424efff6db1a53755853478db108547492a2784c55f1d934f776388232f556880f682e401c45b7db97

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-GQJ5L.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/1440-94-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-78-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-118-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-115-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-111-0x00000000009A0000-0x0000000000A42000-memory.dmp

Filesize
648KB

Download
memory/1440-110-0x00000000009A0000-0x0000000000A42000-memory.dmp

Filesize
648KB

Download
memory/1440-109-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-68-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-106-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-103-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-71-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-74-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-75-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-100-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-81-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-84-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-87-0x00000000009A0000-0x0000000000A42000-memory.dmp

Filesize
648KB

Download
memory/1440-89-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/1440-97-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/3256-65-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/3256-63-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/3256-60-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/3256-59-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/3356-11-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3356-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4588-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4588-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4588-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download

Analysis

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