socks5systemz | 7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5

General

Target

7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.exe
Size

3.5MB
MD5

c883436a51137626711481fed4be79c8
SHA1

57c7e6907219e8aae747f64343066963b57508b0
SHA256

7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5
SHA512

8b6c00183876d0bd712e616fcb6db3f7d5ffae4eeeb25fbf6c0a17b725b44f82cf7e2e810404560ab2373cbaf053d7baa89aa999e6c0c59161cf1bf9ab1098b9
SSDEEP

49152:Cq83Vz78OluGWBbuAC/diGe0rwNBspK/DQpBjMVJZEY3aXUzjXv8lszLTx660Uax:n8txwBbd8dixqwDspccpp5Uzj/8ls1KX

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1440-73-0x00000000007A0000-0x0000000000842000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
96	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp
1440	audiocutterjoiner32_64.exe

Loads dropped DLL 1 IoCs

pid	Process
96	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp

Unexpected DNS network traffic destination 2 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	45.155.250.90
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

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	audiocutterjoiner32_64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
96	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp
96	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
96	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 96	2948	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.exe	73
PID 2948 wrote to memory of 96	2948	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.exe	73
PID 2948 wrote to memory of 96	2948	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.exe	73
PID 96 wrote to memory of 1440	96	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp	74
PID 96 wrote to memory of 1440	96	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp	74
PID 96 wrote to memory of 1440	96	7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp	74

C:\Users\Admin\AppData\Local\Temp\7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.exe
"C:\Users\Admin\AppData\Local\Temp\7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Users\Admin\AppData\Local\Temp\is-MES3B.tmp\7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-MES3B.tmp\7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp" /SL5="$10004A,3387544,54272,C:\Users\Admin\AppData\Local\Temp\7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.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:96
- - C:\Users\Admin\AppData\Local\Audio Cutter Joiner\audiocutterjoiner32_64.exe
    "C:\Users\Admin\AppData\Local\Audio Cutter Joiner\audiocutterjoiner32_64.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1440

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\Audio Cutter Joiner\audiocutterjoiner32_64.exe

Filesize
2.1MB

MD5
bb93e0794549090f9b51330f4cf18174

SHA1
aff16714e0aca8b6f8e86d2b34d7810bfc693e36

SHA256
969d33b5f4aedbe805282a630da8cb43c80d3d81f466c59d292ecd6682a69e1d

SHA512
2a9a3fb67009b57991872cf78c42b3d4a75085bb6afb27640f73b39bb06e7345f3143c48dd403be22dd9ea2c6e2269598e40a440fe4f27f11fdb1fd1e6bcfdca

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MES3B.tmp\7e33a3b6de352650c44163c2ff989cad764017c508e13b240f783c08c736f2c5.tmp

Filesize
689KB

MD5
fba25940d073d324e5df77f502a5a7ce

SHA1
cfbeab0f1adff3c4fd3e3672bc691da0d7329305

SHA256
4944ebd7f24f7a842472ada777b872f6c678ffd8b4d6009a3dd7aca4ed444699

SHA512
aeff6581e4242e38e7bc749a254e87f2e7ef865a9b74e500eb93351b59ac28fafa030104b288a91440eec1b54cb52390b4f968eea08482ca397eba9b1e108e01

Download Submit
\Users\Admin\AppData\Local\Temp\is-G37HP.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/96-54-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/96-7-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/1440-69-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-82-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-52-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-119-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-116-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-57-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-60-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-63-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-66-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-113-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-72-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-73-0x00000000007A0000-0x0000000000842000-memory.dmp

Filesize
648KB

Download
memory/1440-79-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-51-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-85-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-88-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-91-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-94-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-97-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-100-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-103-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-106-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/1440-110-0x0000000000400000-0x0000000000619000-memory.dmp

Filesize
2.1MB

Download
memory/2948-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2948-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2948-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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