socks5systemz | 3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a

General

Target

3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.exe
Size

4.1MB
MD5

11639bd974f35d1e47dca90033c0bdef
SHA1

2f86f4506f6833a4e0eec6224876139918ff7d61
SHA256

3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a
SHA512

e1490a613587432fe21d853e7b24bbebba86aae326d582b78273f3e2c480775bd63ee6784b3cea484e2e369d377f390870e8e235231c779de2decf5f161c05a5
SSDEEP

98304:NAjDIzG3WUseNRemAKzG21xPc4tC+ltiLbFdt:QWG3WUCKyT4tC8cJ3

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/428-76-0x0000000000AF0000-0x0000000000B92000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp
2936	audiocomparer32_64.exe
428	audiocomparer32_64.exe

Loads dropped DLL 1 IoCs

pid	Process
4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.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

System Location Discovery: System Language Discovery 1 TTPs 4 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	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	audiocomparer32_64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	audiocomparer32_64.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp
4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 596 wrote to memory of 4476	596	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.exe	74
PID 596 wrote to memory of 4476	596	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.exe	74
PID 596 wrote to memory of 4476	596	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.exe	74
PID 4476 wrote to memory of 2936	4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp	75
PID 4476 wrote to memory of 2936	4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp	75
PID 4476 wrote to memory of 2936	4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp	75
PID 4476 wrote to memory of 428	4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp	76
PID 4476 wrote to memory of 428	4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp	76
PID 4476 wrote to memory of 428	4476	3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp	76

C:\Users\Admin\AppData\Local\Temp\3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.exe
"C:\Users\Admin\AppData\Local\Temp\3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:596
- C:\Users\Admin\AppData\Local\Temp\is-QPD83.tmp\3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-QPD83.tmp\3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp" /SL5="$601FC,4008138,54272,C:\Users\Admin\AppData\Local\Temp\3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4476
- - C:\Users\Admin\AppData\Local\Audio Comparer\audiocomparer32_64.exe
    "C:\Users\Admin\AppData\Local\Audio Comparer\audiocomparer32_64.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2936
- - C:\Users\Admin\AppData\Local\Audio Comparer\audiocomparer32_64.exe
    "C:\Users\Admin\AppData\Local\Audio Comparer\audiocomparer32_64.exe" -s
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:428

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 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\Audio Comparer\audiocomparer32_64.exe

Filesize
5.0MB

MD5
3bf770107d8b39a30873a08ec99d888d

SHA1
e99f146727466d5c1e9c31d747f2f13e22f6fc8b

SHA256
37d85f1ce65f56e4b3b07c4bba8ceb605efea7c524d179d8eeb6786845c8c615

SHA512
318f564301a3001cde12d0b08adccbd0b04b7474ab892def6461b72de24f9576d1dedc3434826ce28d3344eec17a6a78d63ecda6f8bf4ace2e119f16cf45f568

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-QPD83.tmp\3fb75af15efeef50e53c2025f8d42bc3bd4b757c5dd5d93fe07631fec0be325a.tmp

Filesize
692KB

MD5
5b0502cab39766cada34f3622dea5ac2

SHA1
41dbffba149e8495d7c378ac80a549f9a5455ad5

SHA256
8193ae5cd4c059a871e98b7a4360bb4449125db8263ecaf175524b704345d317

SHA512
95f4699add4e07d049f44f10790078df335b774b7e7b45b11f1676bf530dec99d825a1a547ae82e03e81e7585a9809494a950fb99ed34113a3cd7e8c8ab6aec2

Download Submit
\Users\Admin\AppData\Local\Temp\is-7C1B9.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/428-92-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-95-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-122-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-117-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-114-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-111-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-108-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-105-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-61-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-64-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-67-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-70-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-73-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-76-0x0000000000AF0000-0x0000000000B92000-memory.dmp

Filesize
648KB

Download
memory/428-78-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-83-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-86-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-89-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-102-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/428-98-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/596-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/596-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/596-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2936-56-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/2936-53-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/2936-52-0x0000000000400000-0x00000000008FE000-memory.dmp

Filesize
5.0MB

Download
memory/4476-16-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4476-60-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download

Analysis

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