socks5systemz | 0fb6ab65ec404044dcaa1455f503bde4a385fea4f5033432939253bb36faa73f

General

Target

2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe
Size

3.3MB
MD5

44e8f53e3b360fb8cea3b67288f89b00
SHA1

80e34922310057c6a68e50b32469a8cd72f78088
SHA256

2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed
SHA512

339076c29028a059271dbb8fb9b1434cbdd3673b19829a7d04f2797be006594a0a3551f565c72d7765889665b95e54856756a059e6faca49eb3d56df4508c3f5
SSDEEP

98304:N7YmYbgaGgqT5NxBpAbDML7/N+OG/DR3V3RAZc/IeTLd5w:5FY0aGR17wMN+TrR3deW7Lnw

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2564-87-0x00000000023B0000-0x0000000002452000-memory.dmp	family_socks5systemz
behavioral1/memory/2564-115-0x00000000023B0000-0x0000000002452000-memory.dmp	family_socks5systemz
behavioral1/memory/2564-117-0x00000000023B0000-0x0000000002452000-memory.dmp	family_socks5systemz
behavioral1/memory/2564-116-0x00000000023B0000-0x0000000002452000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp
2548	harmonica32_64.exe
2564	harmonica32_64.exe

Loads dropped DLL 5 IoCs

pid	Process
3032	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe
2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp
2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp
2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp
2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.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

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	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	harmonica32_64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	harmonica32_64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp
2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2908	3032	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe	30
PID 3032 wrote to memory of 2908	3032	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe	30
PID 3032 wrote to memory of 2908	3032	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe	30
PID 3032 wrote to memory of 2908	3032	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe	30
PID 3032 wrote to memory of 2908	3032	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe	30
PID 3032 wrote to memory of 2908	3032	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe	30
PID 3032 wrote to memory of 2908	3032	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe	30
PID 2908 wrote to memory of 2548	2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp	31
PID 2908 wrote to memory of 2548	2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp	31
PID 2908 wrote to memory of 2548	2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp	31
PID 2908 wrote to memory of 2548	2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp	31
PID 2908 wrote to memory of 2564	2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp	32
PID 2908 wrote to memory of 2564	2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp	32
PID 2908 wrote to memory of 2564	2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp	32
PID 2908 wrote to memory of 2564	2908	2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp	32

C:\Users\Admin\AppData\Local\Temp\2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe
"C:\Users\Admin\AppData\Local\Temp\2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Local\Temp\is-41428.tmp\2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-41428.tmp\2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp" /SL5="$40152,3243970,54272,C:\Users\Admin\AppData\Local\Temp\2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.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:2908
- - C:\Users\Admin\AppData\Local\Harmonica\harmonica32_64.exe
    "C:\Users\Admin\AppData\Local\Harmonica\harmonica32_64.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2548
- - C:\Users\Admin\AppData\Local\Harmonica\harmonica32_64.exe
    "C:\Users\Admin\AppData\Local\Harmonica\harmonica32_64.exe" -s
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2564

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

\Users\Admin\AppData\Local\Harmonica\harmonica32_64.exe

Filesize
3.5MB

MD5
9a3ee963607b0be04d4067dff80dd473

SHA1
1bd8cafd81a6e9d3de35cef90d2fde65dc822454

SHA256
2452e9f748b833925ad3a92074d67b8b7adabfba71fe4ebfa5f8be11c84e2c18

SHA512
7f11416ebb5f0b6d32dd6c62178eb9ba6cb80c53a3aa19cf6b703c0540ca6a25fe790a8773340c1020349a7ba299049ce1e5d9690f77ee3356bb248e911e3e00

Download Submit
\Users\Admin\AppData\Local\Temp\is-41428.tmp\2768fa26441f26259d7d6bbf888fddf57733739993f3fe9f67350c82476062ed.tmp

Filesize
692KB

MD5
88b6410721ecb675018ef7785acdd920

SHA1
61811e2e966736f09a6fa7c08253ea8ce31fe52b

SHA256
16ce6be180c97040f8c10564bb2dfdd7a7aa38954071a611e48a23dfd726c368

SHA512
ad3ed0f9478047c3e007e697f8b7855df08085035c77887069540d0a41e5a3cd4bacfeae91f0e3a3ea7830809961c8333a5057155e740d5de5d36b73e4378e92

Download Submit
\Users\Admin\AppData\Local\Temp\is-5E12K.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-5E12K.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/2548-57-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2548-62-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2548-58-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-71-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-102-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-116-0x00000000023B0000-0x0000000002452000-memory.dmp

Filesize
648KB

Download
memory/2564-117-0x00000000023B0000-0x0000000002452000-memory.dmp

Filesize
648KB

Download
memory/2564-64-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-115-0x00000000023B0000-0x0000000002452000-memory.dmp

Filesize
648KB

Download
memory/2564-114-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-111-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-70-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-108-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-74-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-77-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-80-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-83-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-86-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-87-0x00000000023B0000-0x0000000002452000-memory.dmp

Filesize
648KB

Download
memory/2564-93-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-96-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-99-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2564-105-0x0000000000400000-0x000000000077F000-memory.dmp

Filesize
3.5MB

Download
memory/2908-55-0x0000000003DA0000-0x000000000411F000-memory.dmp

Filesize
3.5MB

Download
memory/2908-67-0x0000000003DA0000-0x000000000411F000-memory.dmp

Filesize
3.5MB

Download
memory/2908-66-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2908-11-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/3032-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3032-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3032-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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