socks5systemz | cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1

General

Target

cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe
Size

4.2MB
MD5

a6c09deec506d071cec0878397a20d48
SHA1

6ac287f90b4372615f1c0c7287acdc8eec796c0c
SHA256

cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1
SHA512

7db70ec5775c77e43713cc83eae19bc0b678f4ab724afa536d0032e6433f77942271c0e325fd098366707815f83eb0d6f3dcde9f0f8d5c5c262a47237cecee77
SSDEEP

98304:iEEUwKP/axciBQq5gBd7mMVnMNlNtZkGOLKnsoaLPM0je3HEv0C:/0KP/altgBoMhu3iLKsor3kv0C

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

cklewaj.net

http://cklewaj.net/search/?q=67e28dd83a5ca421460bad497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a371ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923f658cf717c8eb95

http://cklewaj.net/search/?q=67e28dd83a5ca421460bad497c27d78406abdd88be4b12eab517aa5c96bd86e995814f845a8bbc896c58e713bc90c91936b5281fc235a925ed3e00d6bd974a95129070b616e96cc92be20ea778c255bbe258b90d3b4eed3233d1626a8ff815c2ed9d9c33c96f

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1476-96-0x0000000002580000-0x0000000002622000-memory.dmp	family_socks5systemz
behavioral1/memory/1476-118-0x0000000002580000-0x0000000002622000-memory.dmp	family_socks5systemz
behavioral1/memory/1476-119-0x0000000002580000-0x0000000002622000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp
2660	keratodjprof.exe
1476	keratodjprof.exe

Loads dropped DLL 5 IoCs

pid	Process
3028	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe
2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp
2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp
2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp
2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.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	141.98.234.31	1476	keratodjprof.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	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	keratodjprof.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	keratodjprof.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 2804	3028	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe	31
PID 3028 wrote to memory of 2804	3028	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe	31
PID 3028 wrote to memory of 2804	3028	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe	31
PID 3028 wrote to memory of 2804	3028	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe	31
PID 3028 wrote to memory of 2804	3028	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe	31
PID 3028 wrote to memory of 2804	3028	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe	31
PID 3028 wrote to memory of 2804	3028	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe	31
PID 2804 wrote to memory of 2660	2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp	32
PID 2804 wrote to memory of 2660	2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp	32
PID 2804 wrote to memory of 2660	2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp	32
PID 2804 wrote to memory of 2660	2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp	32
PID 2804 wrote to memory of 1476	2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp	33
PID 2804 wrote to memory of 1476	2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp	33
PID 2804 wrote to memory of 1476	2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp	33
PID 2804 wrote to memory of 1476	2804	cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp	33

C:\Users\Admin\AppData\Local\Temp\cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe
"C:\Users\Admin\AppData\Local\Temp\cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\is-C4HBD.tmp\cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-C4HBD.tmp\cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp" /SL5="$400F4,4160040,54272,C:\Users\Admin\AppData\Local\Temp\cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2804
- - C:\Users\Admin\AppData\Local\Kerato DJ Prof\keratodjprof.exe
    "C:\Users\Admin\AppData\Local\Kerato DJ Prof\keratodjprof.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2660
- - C:\Users\Admin\AppData\Local\Kerato DJ Prof\keratodjprof.exe
    "C:\Users\Admin\AppData\Local\Kerato DJ Prof\keratodjprof.exe" -s
    3⤵
    - Executes dropped EXE
    - Unexpected DNS network traffic destination
    - System Location Discovery: System Language Discovery
    PID:1476

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\Kerato DJ Prof\libeay32.dll

Filesize
1.9MB

MD5
876a839023b8f962a72d295da7495734

SHA1
62a7728679bc18784b1fbf1d013f7cece18cbec9

SHA256
a757d773da406411fb977761f6e56f016d48d224aedaf3d875ed4d4a9ede6158

SHA512
e1b23a2f5ec0100ff874ca075bbd0f90e9065a90fec66861f99df603d7aaa9db8e8ec326710fdc11ad41d01befe4ea3077136127acf613614d0d12ff23bec6c1

Download Submit
\Users\Admin\AppData\Local\Kerato DJ Prof\keratodjprof.exe

Filesize
1.8MB

MD5
d87478eeb44b63e227ed0a759f73ed4c

SHA1
58f70107aec799691b181428636f50d19b9d4a89

SHA256
576137c7ed86d2708c4aedd57aedd7c8c3a60936ed0b01daf07fdb5bbd81a1ab

SHA512
833fa3378e6825b3ee67de5ca03801f073bb418555f308607eabd3ea66d7984df0c45d08bafd028d666d8c85ca2e5c5671eef236ec4563561c7633abc36c9cae

Download Submit
\Users\Admin\AppData\Local\Temp\is-C4HBD.tmp\cab641cc941789b948c84f354c83a67b9684ecaee4ffad7981316931ffb903c1.tmp

Filesize
696KB

MD5
fec9d8acbaa0eace3c2dd59416e5acda

SHA1
fb8de46a2b17c1da5e5fd4ccdbd3b36bd322d400

SHA256
01b4c22916a7b7711ddee720eb7804d26a92a3652d7afc5af57788cbedc5aa04

SHA512
f3a0a5ea3bb01cf67fc749642d66a9c2d9a41efed14b1ea82137a3185419d7738357eecc72dea68bb92d33223501e96d2d35090cc538768967eeeb07ea8bf39f

Download Submit
\Users\Admin\AppData\Local\Temp\is-NA8E6.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-NA8E6.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/1476-108-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-117-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-138-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-135-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-132-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-129-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-126-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-123-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-73-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-119-0x0000000002580000-0x0000000002622000-memory.dmp

Filesize
648KB

Download
memory/1476-118-0x0000000002580000-0x0000000002622000-memory.dmp

Filesize
648KB

Download
memory/1476-114-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-79-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-80-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-83-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-86-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-89-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-92-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-95-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-96-0x0000000002580000-0x0000000002622000-memory.dmp

Filesize
648KB

Download
memory/1476-102-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-105-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/1476-111-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/2660-70-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/2660-68-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/2660-66-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/2660-65-0x0000000000400000-0x00000000005C6000-memory.dmp

Filesize
1.8MB

Download
memory/2804-76-0x00000000039C0000-0x0000000003B86000-memory.dmp

Filesize
1.8MB

Download
memory/2804-75-0x0000000000400000-0x00000000004BE000-memory.dmp

Filesize
760KB

Download
memory/2804-11-0x0000000000400000-0x00000000004BE000-memory.dmp

Filesize
760KB

Download
memory/2804-64-0x00000000039C0000-0x0000000003B86000-memory.dmp

Filesize
1.8MB

Download
memory/3028-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3028-77-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3028-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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