socks5systemz | bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59ad

General

Target

bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.exe
Size

4.1MB
MD5

8decfecd3228f64d525f8c00cb399f80
SHA1

8114138cf74562d733758fffb5ce6f88eecd07e2
SHA256

bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59ad
SHA512

b244bad122ab54cba6f8603b0efc7f396b1771651453ea8a0fba6fefd22b286db57314ecf66fb5c8b51bac9d64f981cb2e5335bc48731af6623a588677f24313
SSDEEP

98304:ILdz63zTpGslveI7YUIAf3/JYxF1IcRwEkDw46bhk6Td8bwtibMCi:HDTpGo5IvP1Rw7DSx+sIbMp

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3968-101-0x00000000008A0000-0x0000000000942000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
4192	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp
3968	tckplayer3264.exe

Loads dropped DLL 1 IoCs

pid	Process
4192	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.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

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	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tckplayer3264.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4192	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp
4192	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4192	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 4192	2268	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.exe	84
PID 2268 wrote to memory of 4192	2268	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.exe	84
PID 2268 wrote to memory of 4192	2268	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.exe	84
PID 4192 wrote to memory of 3968	4192	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp	88
PID 4192 wrote to memory of 3968	4192	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp	88
PID 4192 wrote to memory of 3968	4192	bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp	88

C:\Users\Admin\AppData\Local\Temp\bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.exe
"C:\Users\Admin\AppData\Local\Temp\bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Users\Admin\AppData\Local\Temp\is-CJ2FV.tmp\bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-CJ2FV.tmp\bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp" /SL5="$11005C,3974779,54272,C:\Users\Admin\AppData\Local\Temp\bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.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:4192
- - C:\Users\Admin\AppData\Local\TCKPlayer\tckplayer3264.exe
    "C:\Users\Admin\AppData\Local\TCKPlayer\tckplayer3264.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3968

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\TCKPlayer\tckplayer3264.exe

Filesize
2.6MB

MD5
599dbc6b5d42fc9836706a8a182438ae

SHA1
d26436226fcb24d0161e82ed71aa1ed607a8cad6

SHA256
648da330d61580528194b085c7c308265dfbe94d1995af3d385336ba9a038643

SHA512
bce705dc9b5d8a2f309dda89b41d7d719012a8a6444f3fddc33961467076d7098731a1fecfe5778f8d73fa0172d62ffcd27f35c1e365be2717f877c428fae56d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-CJ2FV.tmp\bb4fb13fb61cfb0d0f33b0e3d6f97786f66719fa36259f08ed4f423eebfe59adN.tmp

Filesize
689KB

MD5
b2d1fac3ac579c3b60316381ab2203b6

SHA1
f037385d419876d9788f821f1074e48df8b3b566

SHA256
83fee11b5936c6a7e3ae51bc7e11a06a604169370b0830ee89e701467a72d01c

SHA512
47ae456b0bf9bf4c6cd4f051d794fd27b351294e39e6de23a11e6c4d563137e2982d29461442273bce95dc42bde8a590f71ba7be8bfdad740fefd2d2e56baf80

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-L73A7.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/2268-82-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2268-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2268-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3968-85-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-94-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-78-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-120-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-76-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-84-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-117-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-88-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-91-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-77-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-97-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-100-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-101-0x00000000008A0000-0x0000000000942000-memory.dmp

Filesize
648KB

Download
memory/3968-107-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-110-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-111-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/3968-114-0x0000000000400000-0x00000000006AA000-memory.dmp

Filesize
2.7MB

Download
memory/4192-7-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/4192-81-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download

Analysis

Sharing