socks5systemz | 14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81

General

Target

14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe
Size

4.6MB
MD5

9befea491a6642516e2efdcd8fd5e82a
SHA1

9ae58193f8a8b8e09c55b1fe6999a0c4df46af0c
SHA256

14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81
SHA512

06c99eee494edb424d65bb6449bd1e1f77ded526a340f8888dfde9862499354d1c7671c848fb65473a756f6b44b122509e0b51f1abe9024a87b8257cd0822db4
SSDEEP

98304:m1BCbHJREd+cEIvb7GhOZTQSjHaos5VhCdoCxOVcqscxZ:SBCbJREd+gv3Ggx6v5VWsbhZ

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

dtgbfqs.info

http://dtgbfqs.info/search/?q=67e28dd86e54a179130af94d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978a371ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff819c5e7979b3f

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/408-86-0x00000000024A0000-0x0000000002542000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2368	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp
2852	lesserextent32.exe
408	lesserextent32.exe

Loads dropped DLL 1 IoCs

pid	Process
2368	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.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	91.211.247.248

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
2368	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 2368	3968	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe	82
PID 3968 wrote to memory of 2368	3968	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe	82
PID 3968 wrote to memory of 2368	3968	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe	82
PID 2368 wrote to memory of 2852	2368	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp	86
PID 2368 wrote to memory of 2852	2368	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp	86
PID 2368 wrote to memory of 2852	2368	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp	86
PID 2368 wrote to memory of 408	2368	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp	87
PID 2368 wrote to memory of 408	2368	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp	87
PID 2368 wrote to memory of 408	2368	14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp	87

C:\Users\Admin\AppData\Local\Temp\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe
"C:\Users\Admin\AppData\Local\Temp\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Users\Admin\AppData\Local\Temp\is-UUAQD.tmp\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-UUAQD.tmp\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp" /SL5="$C00F6,4583943,54272,C:\Users\Admin\AppData\Local\Temp\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2368
- - C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
    "C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2852
- - C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
    "C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s
    3⤵
    - Executes dropped EXE
    PID:408

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

Loading Replay Monitor...

Downloads

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

Filesize
2.7MB

MD5
7d77b2468570586fcb81e49052082c57

SHA1
69918bc873214a55fa258c21d596ec763e9a751e

SHA256
7c326777e015508740be05d14cde60da4139ed92df40cc3b65171be70333397c

SHA512
dde35ca5a9d72c098b2549b77a24133b4e61188be20cedad47ef6d73c5fd1924e786a7488f95bc18d12e3bda7514dc4c9f4d4d7bbf2cab5829fa37509dfc4f6e

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-P7VH2.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-UUAQD.tmp\14d9c7104152321929616c70a9d09b824e9e54c1fa8b7fc13575b470f318cd81.tmp

Filesize
680KB

MD5
89c430db291d24fe3fda4257669944ce

SHA1
de7f2ad7a2bebd845e5ed619756fdd53f5a2aed4

SHA256
54289dc8aea767883f8a78b2ec1dc54c9ab1d4081c0f931ddececd50ce320cc6

SHA512
8b5ad69b61d6e52e7db16daf65ec4ccbcb6b307ea680cda03c0bf5cbf1dde81d80b842a0c80d0d80d56c713db26d78fb0e46fcc4eac981972adff4e87dd9e58b

Download Submit
memory/408-94-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-77-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-116-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-113-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-109-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-106-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-103-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-67-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-100-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-97-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-70-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-73-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-74-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-89-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-80-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-83-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/408-86-0x00000000024A0000-0x0000000002542000-memory.dmp

Filesize
648KB

Download
memory/2368-13-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2368-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2852-60-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/2852-64-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/2852-62-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/2852-59-0x0000000000400000-0x00000000006BC000-memory.dmp

Filesize
2.7MB

Download
memory/3968-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3968-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3968-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing