socks5systemz | b12aff75a9a173c15b91ad9b89718f7e73dcd72d97a623d732c4b24f52872b65

General

Target

tuc2.exe
Size

4.5MB
MD5

33d656492325072faf15c45a164487c6
SHA1

ac01c9853d8acba4025369e2aee2487a2f31a232
SHA256

b12aff75a9a173c15b91ad9b89718f7e73dcd72d97a623d732c4b24f52872b65
SHA512

2344f6290a3adf46182abb2587f5b2ca335a59902f96da3c0296497d83444f9047781e3ea9deff3c9c7aa00aa85205e68eb291d0fb9d5450232635942936f705
SSDEEP

98304:QSV6RmOv3vsD3ieHPRuLiWnx2XtEwJdVTio0O4dm8:Cmg3vc3iEPRuZitEm0O4dD

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1260-158-0x00000000021F0000-0x0000000002292000-memory.dmp	family_socks5systemz
behavioral1/memory/1260-156-0x00000000021F0000-0x0000000002292000-memory.dmp	family_socks5systemz
behavioral1/memory/1260-167-0x00000000021F0000-0x0000000002292000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2728	tuc2.tmp
1316	smartimagestorage.exe
1260	smartimagestorage.exe

Loads dropped DLL 6 IoCs

pid	Process
3052	tuc2.exe
2728	tuc2.tmp
2728	tuc2.tmp
2728	tuc2.tmp
2728	tuc2.tmp
2728	tuc2.tmp

Unexpected DNS network traffic destination 1 IoCs

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

description	ioc
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
Runs net.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2728	tuc2.tmp

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2728	3052	tuc2.exe	29
PID 3052 wrote to memory of 2728	3052	tuc2.exe	29
PID 3052 wrote to memory of 2728	3052	tuc2.exe	29
PID 3052 wrote to memory of 2728	3052	tuc2.exe	29
PID 3052 wrote to memory of 2728	3052	tuc2.exe	29
PID 3052 wrote to memory of 2728	3052	tuc2.exe	29
PID 3052 wrote to memory of 2728	3052	tuc2.exe	29
PID 2728 wrote to memory of 2892	2728	tuc2.tmp	30
PID 2728 wrote to memory of 2892	2728	tuc2.tmp	30
PID 2728 wrote to memory of 2892	2728	tuc2.tmp	30
PID 2728 wrote to memory of 2892	2728	tuc2.tmp	30
PID 2728 wrote to memory of 1316	2728	tuc2.tmp	32
PID 2728 wrote to memory of 1316	2728	tuc2.tmp	32
PID 2728 wrote to memory of 1316	2728	tuc2.tmp	32
PID 2728 wrote to memory of 1316	2728	tuc2.tmp	32
PID 2892 wrote to memory of 1368	2892	net.exe	31
PID 2892 wrote to memory of 1368	2892	net.exe	31
PID 2892 wrote to memory of 1368	2892	net.exe	31
PID 2892 wrote to memory of 1368	2892	net.exe	31
PID 2728 wrote to memory of 1260	2728	tuc2.tmp	34
PID 2728 wrote to memory of 1260	2728	tuc2.tmp	34
PID 2728 wrote to memory of 1260	2728	tuc2.tmp	34
PID 2728 wrote to memory of 1260	2728	tuc2.tmp	34

C:\Users\Admin\AppData\Local\Temp\tuc2.exe
"C:\Users\Admin\AppData\Local\Temp\tuc2.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\Temp\is-RA40C.tmp\tuc2.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-RA40C.tmp\tuc2.tmp" /SL5="$40112,4453908,54272,C:\Users\Admin\AppData\Local\Temp\tuc2.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2728
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 163
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2892
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 163
      4⤵
      PID:1368
- - C:\Users\Admin\AppData\Local\Smart Image Storage\smartimagestorage.exe
    "C:\Users\Admin\AppData\Local\Smart Image Storage\smartimagestorage.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1316
- - C:\Users\Admin\AppData\Local\Smart Image Storage\smartimagestorage.exe
    "C:\Users\Admin\AppData\Local\Smart Image Storage\smartimagestorage.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1260

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Smart Image Storage\smartimagestorage.exe

Filesize
381KB

MD5
f406e43ef1cfba1d869aa02e373e886d

SHA1
630faa290b3a5fb87ad0a504ab1caeca3a5d501a

SHA256
6a0bb9e265d539a723dfc8d6d14dda43431ca24bd05c3260bd9ea9b94c93b9d2

SHA512
d9c760abe4609959b6e58cd2beda8e03af730eacdc48700c04c75358fa002004c0e768d886ef4124db40465518ec3536e3ae597fc9714632eba70d6072a8729b

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-RA40C.tmp\tuc2.tmp

Filesize
93KB

MD5
96743d1dc033adaebde9992f8b9520db

SHA1
8f962fb3260e475da956df4e11f7cabf87406fc8

SHA256
433385ac13e3bb617a5c544a94459caa03e44946a6d74841b503db516507391f

SHA512
661bb177f810c3885854ef9b0b9d9e81a040421b475746ab7ab1cc55ba09a871565b6b763a18787b2d29fbae3226db4e2bbabdb94f5325d1c34e99fc6f65bf0d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-RA40C.tmp\tuc2.tmp

Filesize
362KB

MD5
67922ed64f9d7cc85b7215c533ed4c75

SHA1
ea4d13ec37186f5ae8872f7f8ce3009815af212e

SHA256
38e942e3705676bb31d0356b2e0bb3d81c9a042a3f869a15dbc2e61e8f4ad8eb

SHA512
d91917e998111fcd6785fe5ef52651aafab0e9bb8ca285e13971e26dbd4692f0a35bd3470a662a072f2cbf1a474b9552d6a6231dfcb2acc06d21f0ec10ad1438

Download Submit
\Users\Admin\AppData\Local\Smart Image Storage\smartimagestorage.exe

Filesize
85KB

MD5
df5cb18ed2b9f483dcc6be22773c74b4

SHA1
b6cf467006baaf577bda89b07a6ae59bace254f5

SHA256
bde11908980e1ebcb44427e0420ea66f689866b2f8624a58a3dbf2f1a28dcaef

SHA512
e1b463f7ec48ad2605b22bccb25d9a5715bc1a379a21e3f813c5bf5b92f9c8b29dc01924df63ab68f153d8943e80445a31cff9b37ad1d8964d0cc478ebad0a7c

Download Submit
\Users\Admin\AppData\Local\Temp\is-AGC45.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-AGC45.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

Download Submit
\Users\Admin\AppData\Local\Temp\is-AGC45.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-RA40C.tmp\tuc2.tmp

Filesize
688KB

MD5
a7662827ecaeb4fc68334f6b8791b917

SHA1
f93151dd228d680aa2910280e51f0a84d0cad105

SHA256
05f159722d6905719d2d6f340981a293f40ab8a0d2d4a282c948066809d4af6d

SHA512
e9880b3f3ec9201e59114850e9c570d0ad6d3b0e04c60929a03cf983c62c505fcb6bb9dc3adeee88c78d43bd484159626b4a2f000a34b8883164c263f21e6f4a

Download Submit
memory/1260-138-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-144-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-185-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-182-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-133-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-179-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-176-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-173-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-135-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-170-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-167-0x00000000021F0000-0x0000000002292000-memory.dmp

Filesize
648KB

Download
memory/1260-166-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-163-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-156-0x00000000021F0000-0x0000000002292000-memory.dmp

Filesize
648KB

Download
memory/1260-143-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-158-0x00000000021F0000-0x0000000002292000-memory.dmp

Filesize
648KB

Download
memory/1260-147-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-150-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-153-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1260-157-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1316-126-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1316-127-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1316-131-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1316-130-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/2728-140-0x00000000031C0000-0x0000000003329000-memory.dmp

Filesize
1.4MB

Download
memory/2728-139-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2728-11-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2728-137-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2728-125-0x00000000031C0000-0x0000000003329000-memory.dmp

Filesize
1.4MB

Download
memory/3052-136-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3052-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

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