socks5systemz | 51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5

General

Target

51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.exe
Size

4.5MB
MD5

b7da5cb989f005d98378ac072cd2bda6
SHA1

9f90d0455ed66a841b2233ff5ff6a6f494774d87
SHA256

51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5
SHA512

95643521f18cc01eaa4667c17c1603910507408424e59d54c33b17ad2c0ad302819b1a657e1a8788df029014da86b5db894b8f9d54f7324686856d6dcbafafa4
SSDEEP

98304:mrKXFSqhRWdNJ1naJ5HZZf8P0k8JpmrTIionzVntPFj1QAvU2Zd7:qKIqzeNQlZ58P0k8uTItBtPFr5

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

buukkum.com

http://buukkum.com/search/?q=67e28dd86d5ff028450dff177c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f571ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff718c2ec93983f

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2904-82-0x00000000024D0000-0x0000000002572000-memory.dmp	family_socks5systemz

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

Processes:

51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmpmediaplayerrptuning32.exemediaplayerrptuning32.exe

pid process

2264 51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp
596 mediaplayerrptuning32.exe
2904 mediaplayerrptuning32.exe
Loads dropped DLL 1 IoCs

Processes:

51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp

pid process

2264 51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.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:

51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp

pid process

2264 51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp

pid	process
2264	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp
596	mediaplayerrptuning32.exe
2904	mediaplayerrptuning32.exe

pid	process
2264	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
2264	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.exe51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp

description	pid	process	target process
PID 168 wrote to memory of 2264	168	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.exe	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp
PID 168 wrote to memory of 2264	168	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.exe	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp
PID 168 wrote to memory of 2264	168	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.exe	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp
PID 2264 wrote to memory of 596	2264	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp	mediaplayerrptuning32.exe
PID 2264 wrote to memory of 596	2264	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp	mediaplayerrptuning32.exe
PID 2264 wrote to memory of 596	2264	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp	mediaplayerrptuning32.exe
PID 2264 wrote to memory of 2904	2264	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp	mediaplayerrptuning32.exe
PID 2264 wrote to memory of 2904	2264	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp	mediaplayerrptuning32.exe
PID 2264 wrote to memory of 2904	2264	51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp	mediaplayerrptuning32.exe

C:\Users\Admin\AppData\Local\Temp\51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.exe
"C:\Users\Admin\AppData\Local\Temp\51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:168

C:\Users\Admin\AppData\Local\Temp\is-VKM2O.tmp\51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp
"C:\Users\Admin\AppData\Local\Temp\is-VKM2O.tmp\51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp" /SL5="$300DE,4449301,54272,C:\Users\Admin\AppData\Local\Temp\51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2264

C:\Users\Admin\AppData\Local\Media Player RPTuning\mediaplayerrptuning32.exe
"C:\Users\Admin\AppData\Local\Media Player RPTuning\mediaplayerrptuning32.exe" -i
3⤵
- Executes dropped EXE
PID:596

C:\Users\Admin\AppData\Local\Media Player RPTuning\mediaplayerrptuning32.exe
"C:\Users\Admin\AppData\Local\Media Player RPTuning\mediaplayerrptuning32.exe" -s
3⤵
- Executes dropped EXE
PID:2904

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Media Player RPTuning\mediaplayerrptuning32.exe
Filesize
2.3MB

MD5
f56ea261bc3dc5968e8248dfecd81c31

SHA1
c40c14dec893df71312240d86abcbc7404085e7f

SHA256
6d37e1623822a42bb3ad7dc03b501cbed8488468f0b082d4f0ae436031cb6e77

SHA512
16c4beafaaaf835dce35d058c954be659c2d42c1d961813bc854e3f25986c5400d5b8df00790272eb3d8535e95430dbb5e2120862e35593c11b4f79142432ab7

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-VKM2O.tmp\51c6153e9d3050375ceff05719a843dbaa4780eb57703ebbfc83e7fd8d04f9b5.tmp
Filesize
680KB

MD5
0974ba095ce319c21275c60758122947

SHA1
a459f36fc33297d242af213eda9d326967c9bcd5

SHA256
b1d3bfec6e0fd3effd9f9c661082d9b8bd8b01cc7168b0ec73d2e1df195362a6

SHA512
01bdc7b62f999a2a099277a6caee7e721bb1cb3e9639e955edf412e206ea6de4d7b68cb60c31644869a09c9e28ee02b4b327bf2e3e338dbbe8a2b3537055c7ec

Download Submit
\Users\Admin\AppData\Local\Temp\is-S9E9U.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/168-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/168-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/168-67-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/596-59-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/596-61-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/596-63-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2264-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2264-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2904-81-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-100-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-72-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-75-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-78-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-65-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-82-0x00000000024D0000-0x0000000002572000-memory.dmp

Filesize
648KB

Download
memory/2904-86-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-91-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-94-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-97-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-69-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-103-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-106-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-110-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-113-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-116-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-119-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-122-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-125-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/2904-130-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download

Analysis

Sharing