socks5systemz | 152b3080afe74136542514cb1245b4e475e4c74e7f5e4df34690f773fab04352

General

Target

4ce3dcde9ee14c5ac4c3d9b811d7c9d1.exe
Size

3.1MB
MD5

4ce3dcde9ee14c5ac4c3d9b811d7c9d1
SHA1

198d24170609aeadb8c8b858609a7a8a7c8531fb
SHA256

152b3080afe74136542514cb1245b4e475e4c74e7f5e4df34690f773fab04352
SHA512

bba97fdb0c2218078cdff643c29c0b119966312b0ecb96400f3ee9949df265e7893da1983d3608b2b8d3e5a19f362bd21ea988f62b6fad8e47c42cdcbf277677
SSDEEP

49152:p90dyWbc4giAKU88rmmbkfo7K9k2raMRNCXxxt7FgiUU9NR/+pK/md:3Tscs4Zkw12rZq7Fgi/9H5/md

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1376-74-0x0000000000900000-0x00000000009A0000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
2396	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp
1376	csvsplitter34.exe

Loads dropped DLL 2 IoCs

pid	Process
2396	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp
1376	csvsplitter34.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 3 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	csvsplitter34.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2396	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp
2396	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2396	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2396	2236	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.exe	86
PID 2236 wrote to memory of 2396	2236	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.exe	86
PID 2236 wrote to memory of 2396	2236	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.exe	86
PID 2396 wrote to memory of 1376	2396	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp	90
PID 2396 wrote to memory of 1376	2396	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp	90
PID 2396 wrote to memory of 1376	2396	4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp	90

C:\Users\Admin\AppData\Local\Temp\4ce3dcde9ee14c5ac4c3d9b811d7c9d1.exe
"C:\Users\Admin\AppData\Local\Temp\4ce3dcde9ee14c5ac4c3d9b811d7c9d1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Local\Temp\is-T3B70.tmp\4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-T3B70.tmp\4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp" /SL5="$40178,2959979,56832,C:\Users\Admin\AppData\Local\Temp\4ce3dcde9ee14c5ac4c3d9b811d7c9d1.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:2396
- - C:\Users\Admin\AppData\Local\CSV Splitter 3.4\csvsplitter34.exe
    "C:\Users\Admin\AppData\Local\CSV Splitter 3.4\csvsplitter34.exe" -i
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:1376

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\CSV Splitter 3.4\csvsplitter34.exe

Filesize
1.9MB

MD5
9859b225c117a7dfa3151729b8b67ba0

SHA1
70ecb11a1ec6c70cb9ba0faf35ebdc975bb840e1

SHA256
f475d1728fe38a82522ddafb6a7cff2ea1136fdcb52d13d9391b8e64e86de58d

SHA512
0ceffa24f02cefdfe8f7ebaa55d2e221a50a3e0982fb653c94e14606e796786767adbb030efdda0544b8bd3791fdf72754d097caeaf03aab48e8478b4a9a888b

Download Submit
C:\Users\Admin\AppData\Local\CSV Splitter 3.4\sqlite3.dll

Filesize
630KB

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-OS7E0.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-T3B70.tmp\4ce3dcde9ee14c5ac4c3d9b811d7c9d1.tmp

Filesize
694KB

MD5
1aad0113ae710cdf216caf6c942141d5

SHA1
5fd84616a698274d78b47600c9fce4c17be449fb

SHA256
3feb7e452125beac3d6a7bd9fdc534d59569bf273a19eae44407427ebc0ad398

SHA512
6170a7da591c61ff9157a44e20bae77dbf615294ec5d74eaa97e258e0221980934107d99395e5ea63d9740105472be25e7f90108a7383feaa9c227703840a3d7

Download Submit
memory/1376-53-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-88-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-41-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-118-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-45-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-48-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-114-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-100-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-52-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-54-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1376-96-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-57-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-61-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-65-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-69-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-73-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-74-0x0000000000900000-0x00000000009A0000-memory.dmp

Filesize
640KB

Download
memory/1376-80-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-84-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1376-92-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/2236-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2236-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2236-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2396-6-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2396-49-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download

Analysis

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