socks5systemz | 635fac03fcdd04822beb4740cdd544d887cd3039b67009cc90bdacc6c4bcdacb

General

Target

76435e8885559a7c3ef955de05646970.exe
Size

3.5MB
MD5

76435e8885559a7c3ef955de05646970
SHA1

9a897889383e55a66c215bbc2b341996a46081b0
SHA256

635fac03fcdd04822beb4740cdd544d887cd3039b67009cc90bdacc6c4bcdacb
SHA512

713b27c8c593e9f3a02e9b7e183ae0dd6e8b0e44a23b7214e86f2dc91eae60c8c9134e544f076ca12c1fe33ca6057bccd97d019ae840e070839711117a18cc72
SSDEEP

49152:1vzosUaPvpjU0FGpOWYALJs7RjYt/brea7XNB3oYxU3uhdSc1ME9XoMYvmVlWRh:NzVP20wpOWS7cbreyLh6KD1MCXdY+jWf

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/5620-76-0x00000000023B0000-0x0000000002450000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
2788	76435e8885559a7c3ef955de05646970.tmp
5620	ntfs2fat32converter102.exe

Loads dropped DLL 2 IoCs

pid	Process
2788	76435e8885559a7c3ef955de05646970.tmp
5620	ntfs2fat32converter102.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	76435e8885559a7c3ef955de05646970.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76435e8885559a7c3ef955de05646970.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ntfs2fat32converter102.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2788	76435e8885559a7c3ef955de05646970.tmp
2788	76435e8885559a7c3ef955de05646970.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2788	76435e8885559a7c3ef955de05646970.tmp

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5580 wrote to memory of 2788	5580	76435e8885559a7c3ef955de05646970.exe	79
PID 5580 wrote to memory of 2788	5580	76435e8885559a7c3ef955de05646970.exe	79
PID 5580 wrote to memory of 2788	5580	76435e8885559a7c3ef955de05646970.exe	79
PID 2788 wrote to memory of 5620	2788	76435e8885559a7c3ef955de05646970.tmp	80
PID 2788 wrote to memory of 5620	2788	76435e8885559a7c3ef955de05646970.tmp	80
PID 2788 wrote to memory of 5620	2788	76435e8885559a7c3ef955de05646970.tmp	80

C:\Users\Admin\AppData\Local\Temp\76435e8885559a7c3ef955de05646970.exe
"C:\Users\Admin\AppData\Local\Temp\76435e8885559a7c3ef955de05646970.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5580
- C:\Users\Admin\AppData\Local\Temp\is-V81B1.tmp\76435e8885559a7c3ef955de05646970.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-V81B1.tmp\76435e8885559a7c3ef955de05646970.tmp" /SL5="$70218,3470653,54272,C:\Users\Admin\AppData\Local\Temp\76435e8885559a7c3ef955de05646970.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:2788
- - C:\Users\Admin\AppData\Local\NTFS to FAT32 Converter 1.0.2\ntfs2fat32converter102.exe
    "C:\Users\Admin\AppData\Local\NTFS to FAT32 Converter 1.0.2\ntfs2fat32converter102.exe" -i
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:5620

Network

MITRE ATT&CK Enterprise v16

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\NTFS to FAT32 Converter 1.0.2\ntfs2fat32converter102.exe

Filesize
3.1MB

MD5
6ac5078fc3c5177d6e45251a0e889475

SHA1
98c4ccf0649dfe9f728baefab8a30db04eeed923

SHA256
a582b80bf55b1444f5bf62c25922670f9c4b19b8d6544e804effbda5faf17757

SHA512
a7dbf5436b3a48c2f0e7569a7dbd82af7b3ed2786ad5ff79c270eb186ffb7328d3c235d6182cddff6b4de98b8c63c5f3fe3c77c1145571a1b072682e179302ea

Download Submit
C:\Users\Admin\AppData\Local\NTFS to FAT32 Converter 1.0.2\sqlite3.dll

Filesize
630KB

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-RSPI7.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-V81B1.tmp\76435e8885559a7c3ef955de05646970.tmp

Filesize
692KB

MD5
4979d6d3415ef991208e0e4b04c0474d

SHA1
e09f89c0f12445498d9be797e1739efab179bef4

SHA256
2ee54bea24e54db46dc1f439dc7afb9bd4aa4b9209ed8ad679d1d73c9408f597

SHA512
81d7478b362b3e57625cb96e10cf50598694ba77f923f4aa4d324c4c5dd4593a75b14bbfafda152451c7de90890d4d69651ccc835528037375b22b6857345939

Download Submit
memory/2788-51-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2788-12-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/5580-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/5580-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5580-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5620-55-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-75-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-46-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-53-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-56-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/5620-45-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-59-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-63-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-67-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-71-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-76-0x00000000023B0000-0x0000000002450000-memory.dmp

Filesize
640KB

Download
memory/5620-50-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-82-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-84-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-87-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-91-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-95-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-99-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-103-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-107-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download
memory/5620-111-0x0000000000400000-0x0000000000719000-memory.dmp

Filesize
3.1MB

Download

Analysis

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