socks5systemz | b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d

General

Target

b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.exe
Size

6.0MB
MD5

046f987ccf90ec662a99964236317152
SHA1

1948f78099b1b7f8cfc0607d9a78178dc087f98d
SHA256

b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d
SHA512

ebd5b93670af696ba197657a14a116057c5b75f378667c03993c99665ac2b078fbeafcd78c29a040e699bfb4b1bb23139b40822712effcdf31c66cc60d58476f
SSDEEP

98304:CofNNe5YzMEsh3J2ezKEHzUnGFJ20H9oOgYbpL0/1M+VwK8XhapfdTAQxd:35zpsz2QKEGGFtH9o9IKxV5GgfdTAQL

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/2380-189-0x0000000000800000-0x00000000008A2000-memory.dmp	family_socks5systemz
behavioral2/memory/2380-213-0x0000000000800000-0x00000000008A2000-memory.dmp	family_socks5systemz
behavioral2/memory/2380-212-0x0000000000800000-0x00000000008A2000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Socks5systemz family
socks5systemz

Executes dropped EXE 2 IoCs

pid	Process
4100	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.tmp
2380	mp4downloader.exe

Loads dropped DLL 1 IoCs

pid	Process
4100	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.tmp

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

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

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mp4downloader.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4100	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.tmp

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 4100	2472	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.exe	85
PID 2472 wrote to memory of 4100	2472	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.exe	85
PID 2472 wrote to memory of 4100	2472	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.exe	85
PID 4100 wrote to memory of 2380	4100	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.tmp	88
PID 4100 wrote to memory of 2380	4100	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.tmp	88
PID 4100 wrote to memory of 2380	4100	b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.tmp	88

C:\Users\Admin\AppData\Local\Temp\b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.exe
"C:\Users\Admin\AppData\Local\Temp\b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Users\Admin\AppData\Local\Temp\is-Q35CP.tmp\b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-Q35CP.tmp\b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.tmp" /SL5="$6029E,6041325,54272,C:\Users\Admin\AppData\Local\Temp\b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4100
- - C:\Users\Admin\AppData\Local\MP4 Downloader 3.22.1\mp4downloader.exe
    "C:\Users\Admin\AppData\Local\MP4 Downloader 3.22.1\mp4downloader.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2380

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\MP4 Downloader 3.22.1\mp4downloader.exe

Filesize
2.4MB

MD5
1ab9fe1f08b8e9a040e63b1130295785

SHA1
ed0bbbfb0d4ecf891161fa418821ff7ba3fdbfbd

SHA256
5c59108aa37bdd9ef025c9402edd9c1f0d5bcbee9fe55a24f4f385254a99e37a

SHA512
d5cfd494db8ca4c30d337c62281848eb2f35775d34d2718381a284488431d77c193269212e8fd3a160431ff43d622efccc2321b0f982be284543a3009f4207e2

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3EPV6.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-Q35CP.tmp\b9a4ff9d35a384626fbcb4b777301ff693affac1c5095cbdc848abac383ee39d.tmp

Filesize
680KB

MD5
980fa3b2c372e21e6885d96b1df0e08c

SHA1
3eea5a4f2f7ba1b09b3245632b607832cddd508c

SHA256
f8c6aacb3bb2d13e5e847984a901c79a86d7474924c5e314c2a5033aff74d003

SHA512
d3d6be34c9fae775f61305eebf6fbb303617e6d538281d58ca82f7fd108e1b0090fc740a531e97ec48bc95fc570b9174bb5a2d63a6516006291e2338e1d86ecc

Download Submit
memory/2380-179-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-202-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-220-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-164-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-165-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-166-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-217-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-212-0x0000000000800000-0x00000000008A2000-memory.dmp

Filesize
648KB

Download
memory/2380-172-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-173-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-176-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-213-0x0000000000800000-0x00000000008A2000-memory.dmp

Filesize
648KB

Download
memory/2380-182-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-185-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-189-0x0000000000800000-0x00000000008A2000-memory.dmp

Filesize
648KB

Download
memory/2380-188-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-195-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-198-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-199-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-211-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-205-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2380-208-0x0000000000400000-0x000000000066D000-memory.dmp

Filesize
2.4MB

Download
memory/2472-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2472-170-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2472-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4100-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4100-169-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

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