socks5systemz | 821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2

General

Target

821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe
Size

4.9MB
MD5

51ea0eae085f7c3a367668d1f2b8a211
SHA1

7a8358a07934f98476b460cd247aba76984f110f
SHA256

821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2
SHA512

c047d325a114e3eabca7abb4a2b914dac74a4517c9d2f3b24ee10db0c011e42fdf62ae793e4441275eba9bbd569dc368cff20b50b7ff6e97ae6be18bd7f88cb2
SSDEEP

98304:+vpeuT+kIh/dCl3DU/XWNXQHVUCdwLWNOG77v+XwREOb2yLT3d1ZW6:KptI/dKiXQXaUTGzEOb/TNXW6

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

csjocmb.net

http://csjocmb.net/search/?q=67e28dd8685cf679160da41e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923f658cf814c9e794

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2704-101-0x0000000002460000-0x0000000002502000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp
3048	cdstudio.exe
2704	cdstudio.exe

Loads dropped DLL 6 IoCs

pid	Process
2008	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe
2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp
2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp
2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp
2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp
2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.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	flow	ioc	pid	Process
Destination IP	2	45.155.250.90	2704	cdstudio.exe

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	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cdstudio.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cdstudio.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 2116	2008	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe	29
PID 2008 wrote to memory of 2116	2008	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe	29
PID 2008 wrote to memory of 2116	2008	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe	29
PID 2008 wrote to memory of 2116	2008	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe	29
PID 2008 wrote to memory of 2116	2008	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe	29
PID 2008 wrote to memory of 2116	2008	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe	29
PID 2008 wrote to memory of 2116	2008	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe	29
PID 2116 wrote to memory of 3048	2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp	30
PID 2116 wrote to memory of 3048	2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp	30
PID 2116 wrote to memory of 3048	2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp	30
PID 2116 wrote to memory of 3048	2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp	30
PID 2116 wrote to memory of 2704	2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp	31
PID 2116 wrote to memory of 2704	2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp	31
PID 2116 wrote to memory of 2704	2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp	31
PID 2116 wrote to memory of 2704	2116	821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp	31

C:\Users\Admin\AppData\Local\Temp\821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe
"C:\Users\Admin\AppData\Local\Temp\821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Users\Admin\AppData\Local\Temp\is-MVGDC.tmp\821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-MVGDC.tmp\821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp" /SL5="$4014C,4858283,54272,C:\Users\Admin\AppData\Local\Temp\821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2116
- - C:\Users\Admin\AppData\Local\CD Studio\cdstudio.exe
    "C:\Users\Admin\AppData\Local\CD Studio\cdstudio.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3048
- - C:\Users\Admin\AppData\Local\CD Studio\cdstudio.exe
    "C:\Users\Admin\AppData\Local\CD Studio\cdstudio.exe" -s
    3⤵
    - Executes dropped EXE
    - Unexpected DNS network traffic destination
    - System Location Discovery: System Language Discovery
    PID:2704

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\CD Studio\libeay32.dll

Filesize
2.0MB

MD5
1176a2fcbc3cfb77207db7575dd6a522

SHA1
e0a854c77a65e542712c9fe3feae2331fcddb7f4

SHA256
553200e21658e7976d496c52cc1aeb50446b877ccda4f0b073a553ec3fb48560

SHA512
bb00340e4931342c4db499d68e98542f401a985c062810225ee661a7a289a885dab8c64f37fb231212ad2a5d703f3fd0528e8402fc1033cf4128d075714e3f34

Download Submit
\Users\Admin\AppData\Local\CD Studio\cdstudio.exe

Filesize
2.2MB

MD5
33cfae5213549b9ceeba3cd54d705682

SHA1
f8947b98962c3281a07119adbfde84ab2e38b564

SHA256
a9f49254b8c688842b337f8d4dfe4adb78cb042dd9de1dfa08db5e2f8b06611b

SHA512
0654d5b17b3215bb42ef0b231e079dedc42402ca6eab933a6e928184959d17b189cca2fc7e35ed92e7ab93f8faa149d8e9b388c2e2daf465c976eedf05164707

Download Submit
\Users\Admin\AppData\Local\Temp\is-C8FQO.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-C8FQO.tmp\_isetup\_isdecmp.dll

Filesize
32KB

MD5
b6f11a0ab7715f570f45900a1fe84732

SHA1
77b1201e535445af5ea94c1b03c0a1c34d67a77b

SHA256
e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

SHA512
78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

Download Submit
\Users\Admin\AppData\Local\Temp\is-C8FQO.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-MVGDC.tmp\821c9a378c2b54ee9f162cf6441bae5a60759079297eca250981cb54f82ce7c2.tmp

Filesize
695KB

MD5
15e19cc2c5ec8ecaa43f6afe7e08b884

SHA1
7eda3d0dbedf7da5a37bb97b9e560fe638e04681

SHA256
8372e7a1c21103353b4803647556d3aba124ff94ac760dc825ad36ef341fa7b7

SHA512
a4d90590101a8f0de6b22c0fa7b408d8101c1dbfdf43250483930d24331782efb89e3b9c124849b4c1cedbe5330369448cd4908b70319f0c04e53feff7a170fb

Download Submit
memory/2008-80-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2008-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2008-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2116-9-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2116-67-0x0000000003510000-0x0000000003743000-memory.dmp

Filesize
2.2MB

Download
memory/2116-78-0x0000000003510000-0x0000000003743000-memory.dmp

Filesize
2.2MB

Download
memory/2116-77-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2704-82-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-108-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-144-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-139-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-83-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-136-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-86-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-89-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-92-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-95-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-98-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-101-0x0000000002460000-0x0000000002502000-memory.dmp

Filesize
648KB

Download
memory/2704-105-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-133-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-111-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-114-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-117-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-120-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-124-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-127-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/2704-130-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/3048-74-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/3048-68-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/3048-69-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download
memory/3048-70-0x0000000000400000-0x0000000000633000-memory.dmp

Filesize
2.2MB

Download

Analysis

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