socks5systemz | 26dd40285305020f646690a5567a223016bfc3bfee2e64955c020187fae8477a

General

Target

109fff25b396dadb04b160d642335240N.exe
Size

4.6MB
MD5

109fff25b396dadb04b160d642335240
SHA1

25530c59a7970b7f061143019c40760409d11398
SHA256

26dd40285305020f646690a5567a223016bfc3bfee2e64955c020187fae8477a
SHA512

be9a647acd456c0ea6e3dc9d19e2c1fddd355a9ec9c33801d740939f00e80247e1067d77665665b08a2aa4ac2bdd60170bf719b72e752689cb578583a7810e5a
SSDEEP

98304:CXsSdLbP1ktTNv6jfA4W5G+AST84KRehK6ll1hOsX+xr5VFw1:5gLbPCl6jfA4W5PASTpLK6L6sXj1

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2560-90-0x00000000022F0000-0x0000000002392000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
3044	109fff25b396dadb04b160d642335240N.tmp
2796	mobilemediaconverter32.exe
2560	mobilemediaconverter32.exe

Loads dropped DLL 6 IoCs

pid	Process
2472	109fff25b396dadb04b160d642335240N.exe
3044	109fff25b396dadb04b160d642335240N.tmp
3044	109fff25b396dadb04b160d642335240N.tmp
3044	109fff25b396dadb04b160d642335240N.tmp
3044	109fff25b396dadb04b160d642335240N.tmp
3044	109fff25b396dadb04b160d642335240N.tmp

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

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	109fff25b396dadb04b160d642335240N.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mobilemediaconverter32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mobilemediaconverter32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	109fff25b396dadb04b160d642335240N.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 3044	2472	109fff25b396dadb04b160d642335240N.exe	29
PID 2472 wrote to memory of 3044	2472	109fff25b396dadb04b160d642335240N.exe	29
PID 2472 wrote to memory of 3044	2472	109fff25b396dadb04b160d642335240N.exe	29
PID 2472 wrote to memory of 3044	2472	109fff25b396dadb04b160d642335240N.exe	29
PID 2472 wrote to memory of 3044	2472	109fff25b396dadb04b160d642335240N.exe	29
PID 2472 wrote to memory of 3044	2472	109fff25b396dadb04b160d642335240N.exe	29
PID 2472 wrote to memory of 3044	2472	109fff25b396dadb04b160d642335240N.exe	29
PID 3044 wrote to memory of 2796	3044	109fff25b396dadb04b160d642335240N.tmp	30
PID 3044 wrote to memory of 2796	3044	109fff25b396dadb04b160d642335240N.tmp	30
PID 3044 wrote to memory of 2796	3044	109fff25b396dadb04b160d642335240N.tmp	30
PID 3044 wrote to memory of 2796	3044	109fff25b396dadb04b160d642335240N.tmp	30
PID 3044 wrote to memory of 2560	3044	109fff25b396dadb04b160d642335240N.tmp	31
PID 3044 wrote to memory of 2560	3044	109fff25b396dadb04b160d642335240N.tmp	31
PID 3044 wrote to memory of 2560	3044	109fff25b396dadb04b160d642335240N.tmp	31
PID 3044 wrote to memory of 2560	3044	109fff25b396dadb04b160d642335240N.tmp	31

C:\Users\Admin\AppData\Local\Temp\109fff25b396dadb04b160d642335240N.exe
"C:\Users\Admin\AppData\Local\Temp\109fff25b396dadb04b160d642335240N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Users\Admin\AppData\Local\Temp\is-QFMUJ.tmp\109fff25b396dadb04b160d642335240N.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-QFMUJ.tmp\109fff25b396dadb04b160d642335240N.tmp" /SL5="$400F6,4531041,54272,C:\Users\Admin\AppData\Local\Temp\109fff25b396dadb04b160d642335240N.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3044
- - C:\Users\Admin\AppData\Local\Mobile Media Converter\mobilemediaconverter32.exe
    "C:\Users\Admin\AppData\Local\Mobile Media Converter\mobilemediaconverter32.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2796
- - C:\Users\Admin\AppData\Local\Mobile Media Converter\mobilemediaconverter32.exe
    "C:\Users\Admin\AppData\Local\Mobile Media Converter\mobilemediaconverter32.exe" -s
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2560

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

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

\Users\Admin\AppData\Local\Mobile Media Converter\mobilemediaconverter32.exe

Filesize
3.5MB

MD5
c3ccac20a13efd38fed327f05806407f

SHA1
0828d6fdaf123c0ad945addbd0879ac1da0c0d49

SHA256
9e23a38b8538d06ef2f9aec4b898394dad847508de1fbe602891669c52ddaea7

SHA512
7bcc02f74fa28008cf9a7940b1f85db59f885083d84d5c480a247eee83d88761d6229d2d17920b75c2ff0b1139403fe7eff186b0ba36b4cb30df9921878257de

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-JGMST.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-QFMUJ.tmp\109fff25b396dadb04b160d642335240N.tmp

Filesize
680KB

MD5
3853dd5e9eff866fd933bb724a935f15

SHA1
3a6691a8b813d48b9de4bc98f0029076534bd046

SHA256
d114306447198921e69035bf98d6ba527a0c77e2b66ae971fbe96147f1485659

SHA512
e9bfb4155506c36a9fc395bee6b69ce213e36fb0018bda331bacf0116e0b384715816a6ba3bb0decfc6dce4f44ea77e4de2e5279a0126ea28962876074908df4

Download Submit
memory/2472-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2472-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2472-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2560-87-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-71-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-94-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-90-0x00000000022F0000-0x0000000002392000-memory.dmp

Filesize
648KB

Download
memory/2560-67-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-100-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-106-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-97-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-103-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-75-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-78-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-81-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2560-84-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2796-60-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2796-65-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/2796-61-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/3044-59-0x0000000003230000-0x00000000035AD000-memory.dmp

Filesize
3.5MB

Download
memory/3044-12-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3044-74-0x0000000003230000-0x00000000035AD000-memory.dmp

Filesize
3.5MB

Download
memory/3044-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

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