socks5systemz | fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94

General

Target

fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe
Size

4.6MB
MD5

07d160c10509d0857fd9dbd8442e46cb
SHA1

921f90d7516821880a84146983220910d9fc8205
SHA256

fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94
SHA512

f14cc0603c7ee9e8a3069121a8910618078b04c68090a91f71ee81c0593fd3d566eab4122904b92a0d818ebd88341050a8f2234d95029a8b50e7524804a0b0ce
SSDEEP

98304:mKKu/56DlW1uwHXNF5nGUQmviODRfmrM8MEvlnK+LI6HuybFtipw:eleuwHXN7GUfvdV8Ml8lnKKRMw

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

aisieim.ru

ilfduiz.info

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2568-92-0x0000000002590000-0x0000000002632000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Executes dropped EXE 3 IoCs

Processes:

fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmplesserextent.exelesserextent.exe

pid process

2980 fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
2664 lesserextent.exe
2568 lesserextent.exe

pid	process
2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
2664	lesserextent.exe
2568	lesserextent.exe

Loads dropped DLL 5 IoCs

Processes:

fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exefa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp

pid	process
2280	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe
2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp

Unexpected DNS network traffic destination 13 IoCs

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

Processes:

description	ioc
Destination IP	45.155.250.90
Destination IP	91.211.247.248
Destination IP	141.98.234.31
Destination IP	45.155.250.90
Destination IP	91.211.247.248
Destination IP	91.211.247.248
Destination IP	141.98.234.31
Destination IP	152.89.198.214
Destination IP	152.89.198.214
Destination IP	141.98.234.31
Destination IP	81.31.197.38
Destination IP	152.89.198.214
Destination IP	81.31.197.38

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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp

pid process

2980 fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp

pid	process
2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exefa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp

description	pid	process	target process
PID 2280 wrote to memory of 2980	2280	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
PID 2280 wrote to memory of 2980	2280	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
PID 2280 wrote to memory of 2980	2280	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
PID 2280 wrote to memory of 2980	2280	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
PID 2280 wrote to memory of 2980	2280	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
PID 2280 wrote to memory of 2980	2280	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
PID 2280 wrote to memory of 2980	2280	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
PID 2980 wrote to memory of 2664	2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp	lesserextent.exe
PID 2980 wrote to memory of 2664	2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp	lesserextent.exe
PID 2980 wrote to memory of 2664	2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp	lesserextent.exe
PID 2980 wrote to memory of 2664	2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp	lesserextent.exe
PID 2980 wrote to memory of 2568	2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp	lesserextent.exe
PID 2980 wrote to memory of 2568	2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp	lesserextent.exe
PID 2980 wrote to memory of 2568	2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp	lesserextent.exe
PID 2980 wrote to memory of 2568	2980	fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp	lesserextent.exe

C:\Users\Admin\AppData\Local\Temp\fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe
"C:\Users\Admin\AppData\Local\Temp\fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2280

C:\Users\Admin\AppData\Local\Temp\is-UBNH6.tmp\fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
"C:\Users\Admin\AppData\Local\Temp\is-UBNH6.tmp\fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp" /SL5="$5014E,4604216,54272,C:\Users\Admin\AppData\Local\Temp\fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2980

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe
"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe" -i
3⤵
- Executes dropped EXE
PID:2664

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe
"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe" -s
3⤵
- Executes dropped EXE
PID:2568

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 Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe
Filesize
2.9MB

MD5
ef6a40723e3b1f875321abf06ca68ac8

SHA1
53a7f3d4ae7a2b92d45d00035976d82da9e358a1

SHA256
6c08ed0c0cf22702b59f5dcb21e085d0f0abec9d3be739d59d115d7333270012

SHA512
3e5420590b09b4bece53fce0ff46452ad19de96129bf7922710f6ce036bac6367e69491b1418dca984232e6d27aa00e5dfdd1ee9947e84604a0e9c0185ad6ece

Download Submit
\Users\Admin\AppData\Local\Temp\is-6TQJB.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-6TQJB.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-UBNH6.tmp\fa3c9b491697abc525df5ce0086cc8ada6ad3c36a9ce51e7570011d2b8140c94.tmp
Filesize
680KB

MD5
2e97fdffc91d2e4bd0f019d914d45d2e

SHA1
c1f73313c67ae35c06af50550f8ec72210b1efd5

SHA256
9cfabcb9cceb11708e60821bf405d0884cc91eebf9b393962c83caa6f541e15f

SHA512
1a2bc77e185cc73ed8677da219d82bf5849933791ea6f677bb09a866ea54bd7c24fe9d17cef18efe9707ed700783d6629bc995d0004a05c0a24388d0af0062bf

Download Submit
memory/2280-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2280-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2280-73-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2568-75-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-85-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-128-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-125-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-71-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-134-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-122-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-116-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-78-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-119-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-82-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-131-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-88-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-91-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-92-0x0000000002590000-0x0000000002632000-memory.dmp

Filesize
648KB

Download
memory/2568-98-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-101-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-104-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-107-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-110-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2568-113-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2664-65-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2664-69-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2664-66-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2980-79-0x0000000003A70000-0x0000000003D55000-memory.dmp

Filesize
2.9MB

Download
memory/2980-74-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2980-64-0x0000000003A70000-0x0000000003D55000-memory.dmp

Filesize
2.9MB

Download
memory/2980-12-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads