socks5systemz | 4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2

General

Target

4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe
Size

4.0MB
MD5

81707fcfdb64a656c89fd031967cff4c
SHA1

64f9caa0ef50532aa469d64f0c156e5219b14a27
SHA256

4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2
SHA512

bd9040c53a6555b0a605dd625b767773dd098a2fb5bb0b9514e52657624b27998f4334d5cb16640657c9f524dd12a09367a439b0cb832ebe5c4b82c868fafaa3
SSDEEP

98304:NkWnR8/Dl1Pwmel2OlvLuKvm/DNrOcmmMLCH5FVsk2Z9yW4fl9DdI:ILnPwm4FlT5oDNCcmzLCpn2ZGfXS

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4152-86-0x0000000000950000-0x00000000009F2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
1408	yofaboom32_64.exe
4152	yofaboom32_64.exe

Loads dropped DLL 3 IoCs

pid	Process
4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.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	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

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	yofaboom32_64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yofaboom32_64.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 4024	2124	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe	87
PID 2124 wrote to memory of 4024	2124	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe	87
PID 2124 wrote to memory of 4024	2124	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe	87
PID 4024 wrote to memory of 1408	4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	88
PID 4024 wrote to memory of 1408	4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	88
PID 4024 wrote to memory of 1408	4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	88
PID 4024 wrote to memory of 4152	4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	89
PID 4024 wrote to memory of 4152	4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	89
PID 4024 wrote to memory of 4152	4024	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	89

C:\Users\Admin\AppData\Local\Temp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe
"C:\Users\Admin\AppData\Local\Temp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Users\Admin\AppData\Local\Temp\is-J8CGN.tmp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-J8CGN.tmp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp" /SL5="$B01EE,3950523,54272,C:\Users\Admin\AppData\Local\Temp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.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:4024
- - C:\Users\Admin\AppData\Local\YofaBoom\yofaboom32_64.exe
    "C:\Users\Admin\AppData\Local\YofaBoom\yofaboom32_64.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1408
- - C:\Users\Admin\AppData\Local\YofaBoom\yofaboom32_64.exe
    "C:\Users\Admin\AppData\Local\YofaBoom\yofaboom32_64.exe" -s
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4152

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\Temp\is-DSQ7S.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-DSQ7S.tmp\_isetup\_isdecmp.dll

Filesize
19KB

MD5
3adaa386b671c2df3bae5b39dc093008

SHA1
067cf95fbdb922d81db58432c46930f86d23dded

SHA256
71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

SHA512
bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-J8CGN.tmp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp

Filesize
692KB

MD5
9b4f9ec7acaa0201282f5bb6fc15978b

SHA1
50aae7d705db9c1ae5bb2b1f4c9317354cc04556

SHA256
bc85afd449745aed63029469eec4cc92683dc7645c8ef79cd2dd6ea2fc426916

SHA512
ca4ef38cd8f79dc87b5492a9336c716587921e7123728046c802ec90386d9da9c1d1b8df45248aa191286c5fdb99e70dbd7205844c93715a26657ec7bf92918d

Download Submit
C:\Users\Admin\AppData\Local\YofaBoom\yofaboom32_64.exe

Filesize
3.0MB

MD5
6425c5115ab10d9fb7b66f5e28bc35ac

SHA1
8d3dbb3d907be967ea9224ceb1455654b2608600

SHA256
bd3caf196897d119c36af9a03ed19e552cdfef2818d21c6c8e59d9da5a09f8ee

SHA512
b292d22b100fdd61e1f1cdce7b75cfbb4dfad8a5242a87df61a551c6ef13f3d442002640f3cad3f3940cb9580309aa11a85af00cad456f74f0a7536ae0cce8e5

Download Submit
memory/1408-59-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/1408-63-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/1408-61-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/1408-58-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2124-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2124-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2124-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4024-12-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4024-66-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4152-72-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-86-0x0000000000950000-0x00000000009F2000-memory.dmp

Filesize
648KB

Download
memory/4152-73-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-75-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-79-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-82-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-85-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-69-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-92-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-95-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-98-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-101-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-104-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-107-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/4152-110-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download

Analysis

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