socks5systemz | 495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6

General

Target

495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe
Size

5.3MB
MD5

41bbae1643e15929d07776431147c9ec
SHA1

aeec8f3dfa2fa9b61099c65c1e10389cede8381f
SHA256

495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6
SHA512

509ccc01fcad6fa2e91601ec9fe835c5505aaf3b81281a51ba12cf2a2a22cb19f17b2cee466f561d06089853df00877aa210a9bf47f3e5480ee7bad78deeb87d
SSDEEP

98304:+fAIgzlNGdj2X6wES/UTYdIWn6OXd/9MM4hlNZEQZ9l+uuAcf+BBLtLXd1ZZQ3:aArWdjG/UZW6OXXMMWTEqpMf+ltXZM

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://buhephc.com/search/?q=67e28dd83f0bf1291606a9177c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f171ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a628cff18c0e796

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2456-98-0x00000000024B0000-0x0000000002552000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp
2468	bestmetronome.exe
2456	bestmetronome.exe

Loads dropped DLL 6 IoCs

pid	Process
2620	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe
1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp
1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp
1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp
1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp
1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.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	91.211.247.248

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

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 1804	2620	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe	28
PID 2620 wrote to memory of 1804	2620	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe	28
PID 2620 wrote to memory of 1804	2620	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe	28
PID 2620 wrote to memory of 1804	2620	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe	28
PID 2620 wrote to memory of 1804	2620	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe	28
PID 2620 wrote to memory of 1804	2620	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe	28
PID 2620 wrote to memory of 1804	2620	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe	28
PID 1804 wrote to memory of 2468	1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp	29
PID 1804 wrote to memory of 2468	1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp	29
PID 1804 wrote to memory of 2468	1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp	29
PID 1804 wrote to memory of 2468	1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp	29
PID 1804 wrote to memory of 2456	1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp	30
PID 1804 wrote to memory of 2456	1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp	30
PID 1804 wrote to memory of 2456	1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp	30
PID 1804 wrote to memory of 2456	1804	495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp	30

C:\Users\Admin\AppData\Local\Temp\495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe
"C:\Users\Admin\AppData\Local\Temp\495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Users\Admin\AppData\Local\Temp\is-S2IGO.tmp\495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-S2IGO.tmp\495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp" /SL5="$30136,5280940,54272,C:\Users\Admin\AppData\Local\Temp\495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1804
- - C:\Users\Admin\AppData\Local\Best Metronome\bestmetronome.exe
    "C:\Users\Admin\AppData\Local\Best Metronome\bestmetronome.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2468
- - C:\Users\Admin\AppData\Local\Best Metronome\bestmetronome.exe
    "C:\Users\Admin\AppData\Local\Best Metronome\bestmetronome.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2456

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\Best Metronome\bestmetronome.exe

Filesize
1.9MB

MD5
b092b696aaf05c40a3e7bd1b4456f461

SHA1
a48d6f5494f4d7ae707aa18d762c1d8f746640cc

SHA256
71299507e2a50895b9b6d744d5df5ca5c48fb9be3e4677c0dd668cb4b2ae6ec0

SHA512
f7f7c80d5867953701358ab0bb83c102da627a162266d30ce9e8314684baf1413a7585bf540ee045ecbd4d4a24e4f0a142d19b729e42b33a9bdff6cc98b0694c

Download Submit
C:\Users\Admin\AppData\Local\Best Metronome\bestmetronome.exe

Filesize
1.2MB

MD5
72a96c933fac451b6855aa7a33185ec8

SHA1
e199ffcbb771b22b0156be51cbd3456b9723cb42

SHA256
84fd1bb8d34b239106d30b42b3533650f54cb3105ae50f5942365827baf822af

SHA512
fc1ce52b73a8599e9314f7cb2480c5295d1a7608fe4db0a79a9aa8829ac139eff8973d94e4d70008b92aa2e2c75a3221031b8d700cac61f7565fbbea6f252805

Download Submit
C:\Users\Admin\AppData\Local\Best Metronome\libeay32.dll

Filesize
2.0MB

MD5
1176a2fcbc3cfb77207db7575dd6a522

SHA1
e0a854c77a65e542712c9fe3feae2331fcddb7f4

SHA256
553200e21658e7976d496c52cc1aeb50446b877ccda4f0b073a553ec3fb48560

SHA512
bb00340e4931342c4db499d68e98542f401a985c062810225ee661a7a289a885dab8c64f37fb231212ad2a5d703f3fd0528e8402fc1033cf4128d075714e3f34

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-S2IGO.tmp\495ca5eae2fb4ff041f2e4ee79dc92d69ef41c7f388f4a8ad30ff8d5ad2185b6.tmp

Filesize
695KB

MD5
eff62fa565f574064e7161362d4fc6a3

SHA1
fba3f95b5835f67976d5ac987b07ed833a377710

SHA256
54b150ce878dba607ea665bdc9f624caec44459bec8ca78065ff1eddc1772b58

SHA512
51aa449b826a70106e4bd5b4aa6e2603f0aaa67b5a52275d1f4484e2ae0c56d0525b35fbf473f672377861aafa01e39348923427550f3e5105440c2d94a02be1

Download Submit
\Users\Admin\AppData\Local\Best Metronome\bestmetronome.exe

Filesize
2.1MB

MD5
4c14d96da79b781e36040e6f2cf5e17a

SHA1
a70af36e8330d61d99a0c360185047321ffa947c

SHA256
416354a9d02bb40312385fe3140b804d31411025c348b8b93569358fc31e1678

SHA512
1f6215af6672cfa4a4c31d6a13c785c8f30b99f10b083eda6099451a2ba35119b0d96b9d4b65c08bac1295238bbea8d74d24b2d297c5039dd3fcfe845fefc3c5

Download Submit
\Users\Admin\AppData\Local\Temp\is-MA9FA.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-MA9FA.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

Download Submit
\Users\Admin\AppData\Local\Temp\is-MA9FA.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/1804-19-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/1804-84-0x0000000003160000-0x00000000033A7000-memory.dmp

Filesize
2.3MB

Download
memory/1804-67-0x0000000003160000-0x00000000033A7000-memory.dmp

Filesize
2.3MB

Download
memory/1804-80-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2456-113-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-97-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-143-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-77-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-138-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-135-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-132-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-81-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-129-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-85-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-88-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-91-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-94-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-126-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-98-0x00000000024B0000-0x0000000002552000-memory.dmp

Filesize
648KB

Download
memory/2456-104-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-107-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-110-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-123-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-116-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2456-119-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2468-69-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2468-68-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2468-74-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2468-72-0x0000000000400000-0x0000000000647000-memory.dmp

Filesize
2.3MB

Download
memory/2620-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-79-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download

Analysis

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