socks5systemz | ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674

General

Target

ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.exe
Size

4.9MB
MD5

f1d0a7d080ec0bc84837e0a22effa03a
SHA1

57b83532d806a8c40fb3eca4e134dd315e6b1edf
SHA256

ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674
SHA512

38a34aba95fccc69c5dcb538a33cc3e52fb0cb4e813080b9b31a4eb667f12fe69a4efd30f9cba253355e5413f63e3c8ecb97fb331471d3110b8a5a99b58bd75d
SSDEEP

98304:meTMh6Mm4HB8eQdMosede+YVCwBCr4DQH6ikoDLLoq7R6:jThvsBxe/sp+1MCr4ka0LLov

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bupodhd.com

http://bupodhd.com/search/?q=67e28dd83e5cfa2f440afa1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a471ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff819c8e7939d3b

http://bupodhd.com/search/?q=67e28dd83e5cfa2f440afa1d7c27d78406abdd88be4b12eab517aa5c96bd86ef928248875a8bbc896c58e713bc90c91936b5281fc235a925ed3e07d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee929233c5699116

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2904-88-0x0000000000980000-0x0000000000A22000-memory.dmp	family_socks5systemz
behavioral1/memory/2904-112-0x0000000000980000-0x0000000000A22000-memory.dmp	family_socks5systemz
behavioral1/memory/2904-113-0x0000000000980000-0x0000000000A22000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2484	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp
1560	lesserextent32.exe
2904	lesserextent32.exe

Loads dropped DLL 1 IoCs

pid	Process
2484	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2484	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3840 wrote to memory of 2484	3840	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.exe	83
PID 3840 wrote to memory of 2484	3840	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.exe	83
PID 3840 wrote to memory of 2484	3840	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.exe	83
PID 2484 wrote to memory of 1560	2484	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp	86
PID 2484 wrote to memory of 1560	2484	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp	86
PID 2484 wrote to memory of 1560	2484	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp	86
PID 2484 wrote to memory of 2904	2484	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp	87
PID 2484 wrote to memory of 2904	2484	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp	87
PID 2484 wrote to memory of 2904	2484	ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp	87

C:\Users\Admin\AppData\Local\Temp\ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.exe
"C:\Users\Admin\AppData\Local\Temp\ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3840
- C:\Users\Admin\AppData\Local\Temp\is-Q0AVR.tmp\ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-Q0AVR.tmp\ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp" /SL5="$C0056,4860576,54272,C:\Users\Admin\AppData\Local\Temp\ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2484
- - C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
    "C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1560
- - C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
    "C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2904

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 Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe

Filesize
3.0MB

MD5
26fdca8b070a20f3f2644ae7e714525d

SHA1
e016a19b07ab693ff2a791a91969c9fe7ef5b2f7

SHA256
f68f4964adabc6d74ffc8d1d8fed16e5dad134017aa15d97a74a93da30128193

SHA512
ea54edc475935dc75b4ed0bb0c0450b7b1eda270ab3c9f190740b7b35731dccbec466ee3d4a8e6d5b1d8c2afdf5391a07374a520a143bd16e0de9908b312085f

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6N7B1.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-Q0AVR.tmp\ab5dbd15bd7a36e1cd2e9cdfc1fc67850707ace6422df0e1764fb2e132afd674.tmp

Filesize
680KB

MD5
dff4f58a01a8e88e4a2f821ca761d901

SHA1
e67e24669220213f895b68c0d662b02b03469b4a

SHA256
91b049634c65dbe18368e1f2ead4ae48f62b92fdfcd119ccea0919b68bf56e76

SHA512
049cebaa8bc30f2b7b90a49f6022271247fab2a3bc0fd2e9f36d1f27e0c37926f00deedd92b5d85a8b34f2f6e9b59ee3b7e12510cfa720935a86ba820132817a

Download Submit
memory/1560-65-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/1560-59-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/1560-60-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/1560-63-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2484-71-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2484-13-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2904-76-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-88-0x0000000000980000-0x0000000000A22000-memory.dmp

Filesize
648KB

Download
memory/2904-69-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-120-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-117-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-72-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-75-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-113-0x0000000000980000-0x0000000000A22000-memory.dmp

Filesize
648KB

Download
memory/2904-79-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-82-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-85-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-67-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-90-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-96-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-99-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-102-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-105-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-108-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-111-0x0000000000400000-0x00000000006F7000-memory.dmp

Filesize
3.0MB

Download
memory/2904-112-0x0000000000980000-0x0000000000A22000-memory.dmp

Filesize
648KB

Download
memory/3840-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3840-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3840-70-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

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