socks5systemz | 4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6

General

Target

4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe
Size

4.8MB
MD5

4e3c817f2a5779b4d0fdcdc84a2d718f
SHA1

f9aa24e52d28159b669d4f9a3ecc89018bcc5a84
SHA256

4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6
SHA512

1a891561421fa3be36e4c461207ff2b0b6341233b24490563032b8e23d23f2737e56e9c87e2dda2683c7cf22f0004bb136ed5861fef1a1b3330ca7ec0a54d970
SSDEEP

98304:ms+pQ4fSA3WmaukqVYHHxNVZHP0eDon1donXwiOwTsZRpFQuDD:IpQzAGokqqHHxNLpon1YGTnQgD

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

dtdonoi.info

http://dtdonoi.info/search/?q=67e28dd8685ff37d4306f81a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff713c2ed979c39

http://dtdonoi.info/search/?q=67e28dd8685ff37d4306f81a7c27d78406abdd88be4b12eab517aa5c96bd86e891814a865a8bbc896c58e713bc90c91b36b5281fc235a925ed3e51d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee9d9839cf6d9014

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1056-87-0x00000000008E0000-0x0000000000982000-memory.dmp	family_socks5systemz
behavioral1/memory/1056-110-0x00000000008E0000-0x0000000000982000-memory.dmp	family_socks5systemz
behavioral1/memory/1056-111-0x00000000008E0000-0x0000000000982000-memory.dmp	family_socks5systemz

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

Processes:

4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmpaudioconverter32.exeaudioconverter32.exe

pid process

3408 4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp
4480 audioconverter32.exe
1056 audioconverter32.exe
Loads dropped DLL 1 IoCs

Processes:

4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp

pid process

3408 4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.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 141.98.234.31
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:

4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp

pid process

3408 4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp

pid	process
3408	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp
4480	audioconverter32.exe
1056	audioconverter32.exe

pid	process
3408	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
3408	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp

description	pid	process	target process
PID 2500 wrote to memory of 3408	2500	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp
PID 2500 wrote to memory of 3408	2500	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp
PID 2500 wrote to memory of 3408	2500	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp
PID 3408 wrote to memory of 4480	3408	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp	audioconverter32.exe
PID 3408 wrote to memory of 4480	3408	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp	audioconverter32.exe
PID 3408 wrote to memory of 4480	3408	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp	audioconverter32.exe
PID 3408 wrote to memory of 1056	3408	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp	audioconverter32.exe
PID 3408 wrote to memory of 1056	3408	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp	audioconverter32.exe
PID 3408 wrote to memory of 1056	3408	4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp	audioconverter32.exe

C:\Users\Admin\AppData\Local\Temp\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe
"C:\Users\Admin\AppData\Local\Temp\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2500

C:\Users\Admin\AppData\Local\Temp\is-4KEAJ.tmp\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp
"C:\Users\Admin\AppData\Local\Temp\is-4KEAJ.tmp\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp" /SL5="$6011C,4767252,54272,C:\Users\Admin\AppData\Local\Temp\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3408

C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
"C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe" -i
3⤵
- Executes dropped EXE
PID:4480

C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
"C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe" -s
3⤵
- Executes dropped EXE
PID:1056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
Filesize
2.9MB

MD5
9e7b621284bc476bba0ffa97027189b0

SHA1
07bbddca88a7dcfe56ae48ea08b1850d60ea1c06

SHA256
ed17a28aafbccbe7b1f2bd2e2504368e56333a1998e31bee8ef29e9da80b48b1

SHA512
c79d11a8db2f0009943f132f5d8736b3bd321f1518d85370c5b2efc82d32be966b5716b4d1e987e7abd83ab6d511ad926abd72c0d7bf336a3385db37aa7aded7

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4KEAJ.tmp\4cf81e6c3bab937665d4cc19a8b76b3a4610a52d9c0617a4dfe2aa6c0b8321d6.tmp
Filesize
680KB

MD5
f2ea57162349fbb5a88b276f91880c7d

SHA1
31d0ef8f01ec1dbca631b2aee891ec46c0a2c663

SHA256
756ee2c303f097f361c1f6f16f118612acd5ceb277fd7642695b36fedf0dba68

SHA512
3dd06f405e036ade9fd52ac7ae189e8c1bafc48dc09f6f346f5b1ddb32ec43ecf527bd96d2c446d320cd22ea63d5eae430cab92533847d83a0af015224a13799

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

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/1056-94-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-78-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-118-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-115-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-111-0x00000000008E0000-0x0000000000982000-memory.dmp

Filesize
648KB

Download
memory/1056-110-0x00000000008E0000-0x0000000000982000-memory.dmp

Filesize
648KB

Download
memory/1056-66-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-68-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-109-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-106-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-71-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-74-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-75-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-103-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-81-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-84-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-87-0x00000000008E0000-0x0000000000982000-memory.dmp

Filesize
648KB

Download
memory/1056-89-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-100-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1056-97-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2500-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2500-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2500-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3408-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3408-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4480-59-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4480-64-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4480-62-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download

Analysis

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