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
behavioral1/memory/672-88-0x0000000002250000-0x00000000022F2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
2880	yofaboom32_64.exe
672	yofaboom32_64.exe

Loads dropped DLL 6 IoCs

pid	Process
2508	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe
2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
2020	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	152.89.198.214

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 2020	2508	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe	29
PID 2508 wrote to memory of 2020	2508	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe	29
PID 2508 wrote to memory of 2020	2508	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe	29
PID 2508 wrote to memory of 2020	2508	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe	29
PID 2508 wrote to memory of 2020	2508	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe	29
PID 2508 wrote to memory of 2020	2508	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe	29
PID 2508 wrote to memory of 2020	2508	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe	29
PID 2020 wrote to memory of 2880	2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	30
PID 2020 wrote to memory of 2880	2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	30
PID 2020 wrote to memory of 2880	2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	30
PID 2020 wrote to memory of 2880	2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	30
PID 2020 wrote to memory of 672	2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	31
PID 2020 wrote to memory of 672	2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	31
PID 2020 wrote to memory of 672	2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	31
PID 2020 wrote to memory of 672	2020	4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp	31

C:\Users\Admin\AppData\Local\Temp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe
"C:\Users\Admin\AppData\Local\Temp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2508
- C:\Users\Admin\AppData\Local\Temp\is-DPJUJ.tmp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-DPJUJ.tmp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp" /SL5="$401AE,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:2020
- - 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:2880
- - 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:672

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

\Users\Admin\AppData\Local\Temp\is-DPJUJ.tmp\4a89a8a16e7096c088e391e172ad1ac4fbe4a45a81103b67431f39abcd6da9f2.tmp

Filesize
692KB

MD5
9b4f9ec7acaa0201282f5bb6fc15978b

SHA1
50aae7d705db9c1ae5bb2b1f4c9317354cc04556

SHA256
bc85afd449745aed63029469eec4cc92683dc7645c8ef79cd2dd6ea2fc426916

SHA512
ca4ef38cd8f79dc87b5492a9336c716587921e7123728046c802ec90386d9da9c1d1b8df45248aa191286c5fdb99e70dbd7205844c93715a26657ec7bf92918d

Download Submit
\Users\Admin\AppData\Local\Temp\is-F8EN1.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-F8EN1.tmp\_isetup\_isdecmp.dll

Filesize
19KB

MD5
3adaa386b671c2df3bae5b39dc093008

SHA1
067cf95fbdb922d81db58432c46930f86d23dded

SHA256
71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

SHA512
bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

Download Submit
\Users\Admin\AppData\Local\Temp\is-F8EN1.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

Filesize
3.0MB

MD5
6425c5115ab10d9fb7b66f5e28bc35ac

SHA1
8d3dbb3d907be967ea9224ceb1455654b2608600

SHA256
bd3caf196897d119c36af9a03ed19e552cdfef2818d21c6c8e59d9da5a09f8ee

SHA512
b292d22b100fdd61e1f1cdce7b75cfbb4dfad8a5242a87df61a551c6ef13f3d442002640f3cad3f3940cb9580309aa11a85af00cad456f74f0a7536ae0cce8e5

Download Submit
memory/672-68-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-88-0x0000000002250000-0x00000000022F2000-memory.dmp

Filesize
648KB

Download
memory/672-112-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-109-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-106-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-103-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-100-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-97-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-94-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-87-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-72-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-75-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-78-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-81-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/672-84-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2020-8-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2020-62-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2020-59-0x0000000004DF0000-0x00000000050F9000-memory.dmp

Filesize
3.0MB

Download
memory/2508-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2508-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2508-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2880-66-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2880-63-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2880-60-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download

Analysis

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