socks5systemz | e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b

General

Target

e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe
Size

4.7MB
MD5

d2f16131d658784ee0234daef80a4893
SHA1

61aef10c8d42c677a2ec8e93ac3326ef3891bb0d
SHA256

e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b
SHA512

ad79f1d21040b4e03044e7374662cefdb4bebc15df3a3a9544ac06eab20b25fbb659993b5a8225d63eae50819ab22eec88ff70edba9533f8bd11ad55fee42bce
SSDEEP

98304:mLdFZY+c+ESBPrIZIluqbcl94xpFi22z+W8D6G6jgslLZH1j6:SFBEeUSluqbclSs2U7Uuj3FZ0

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

ayrbzcd.ru

http://ayrbzcd.ru/search/?q=67e28dd86554fa2a495aa4197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a071ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6f8dfd12c6ef9d

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2472-92-0x0000000002540000-0x00000000025E2000-memory.dmp	family_socks5systemz

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

Processes:

e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmplesserextent32.exelesserextent32.exe

pid process

3056 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
2948 lesserextent32.exe
2472 lesserextent32.exe

pid	process
3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
2948	lesserextent32.exe
2472	lesserextent32.exe

Loads dropped DLL 5 IoCs

Processes:

e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exee250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp

pid	process
2276	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe
3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp

Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description ioc

Destination IP 141.98.234.31
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:

e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp

pid process

3056 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exee250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp

description	pid	process	target process
PID 2276 wrote to memory of 3056	2276	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
PID 2276 wrote to memory of 3056	2276	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
PID 2276 wrote to memory of 3056	2276	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
PID 2276 wrote to memory of 3056	2276	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
PID 2276 wrote to memory of 3056	2276	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
PID 2276 wrote to memory of 3056	2276	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
PID 2276 wrote to memory of 3056	2276	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
PID 3056 wrote to memory of 2948	3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp	lesserextent32.exe
PID 3056 wrote to memory of 2948	3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp	lesserextent32.exe
PID 3056 wrote to memory of 2948	3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp	lesserextent32.exe
PID 3056 wrote to memory of 2948	3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp	lesserextent32.exe
PID 3056 wrote to memory of 2472	3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp	lesserextent32.exe
PID 3056 wrote to memory of 2472	3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp	lesserextent32.exe
PID 3056 wrote to memory of 2472	3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp	lesserextent32.exe
PID 3056 wrote to memory of 2472	3056	e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp	lesserextent32.exe

C:\Users\Admin\AppData\Local\Temp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe
"C:\Users\Admin\AppData\Local\Temp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2276

C:\Users\Admin\AppData\Local\Temp\is-HU62T.tmp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
"C:\Users\Admin\AppData\Local\Temp\is-HU62T.tmp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp" /SL5="$30136,4666921,54272,C:\Users\Admin\AppData\Local\Temp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3056

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i
3⤵
- Executes dropped EXE
PID:2948

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s
3⤵
- Executes dropped EXE
PID:2472

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

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
Filesize
2.8MB

MD5
eb006d9f9056a10d7041b60c92d5748d

SHA1
fb3d1c69f0ab0e80a6b1453e3b959ed6a93eab07

SHA256
70714c41c7687e2e864ef98dc47829bbb765a370ce07c4ef45ef7032c6ed241a

SHA512
26194cca01da8b17ae81996d84b572d602ba64d4de8225c47be5cc9795c4f43b73d04ee5aa6ff2233a4c9d9e21c2930e97633a67a622a9ad9d03f9bfd87f5d8f

Download Submit
\Users\Admin\AppData\Local\Temp\is-1CUMP.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-1CUMP.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-HU62T.tmp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp
Filesize
680KB

MD5
dff4f58a01a8e88e4a2f821ca761d901

SHA1
e67e24669220213f895b68c0d662b02b03469b4a

SHA256
91b049634c65dbe18368e1f2ead4ae48f62b92fdfcd119ccea0919b68bf56e76

SHA512
049cebaa8bc30f2b7b90a49f6022271247fab2a3bc0fd2e9f36d1f27e0c37926f00deedd92b5d85a8b34f2f6e9b59ee3b7e12510cfa720935a86ba820132817a

Download Submit
memory/2276-73-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2276-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2276-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2472-107-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-113-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-137-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-132-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-129-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-126-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-75-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-123-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-79-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-82-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-85-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-88-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-91-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-92-0x0000000002540000-0x00000000025E2000-memory.dmp

Filesize
648KB

Download
memory/2472-98-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-101-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-104-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-120-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-110-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2472-117-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2948-65-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2948-70-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/2948-66-0x0000000000400000-0x00000000006C4000-memory.dmp

Filesize
2.8MB

Download
memory/3056-19-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3056-78-0x0000000004250000-0x0000000004514000-memory.dmp

Filesize
2.8MB

Download
memory/3056-74-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3056-63-0x0000000004250000-0x0000000004514000-memory.dmp

Filesize
2.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads