socks5systemz | fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861

General

Target

fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe
Size

4.7MB
MD5

f9cfd8f9afb7ee87e7ad049b7a92423f
SHA1

cf336b758b82d17f8be83a5d93c7d5aebd0e4638
SHA256

fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861
SHA512

388ca19270ca8addf4e93d4ab9c3225cdefba6afaf0061d11030f09c57fc0372e5b1bb86f9d5cb902354a4d13d8afffec3e073ac6027fdc4ea6d15e2d8f9fcac
SSDEEP

98304:mMX40drbC2Z+oMvtyIGM1ONsQNaMZE8Q0jEy0mKPrM/cqPFyvH66:5/Fn0FJzONfeNy9Y80x

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

ejuzjef.ua

http://ejuzjef.ua/search/?q=67e28dd86554fa2a495aa4197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a071ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6f8dfd15c0ec93

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2464-93-0x0000000002250000-0x00000000022F2000-memory.dmp	family_socks5systemz

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

Processes:

fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmplesserextent32.exelesserextent32.exe

pid process

2632 fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
2656 lesserextent32.exe
2464 lesserextent32.exe

pid	process
2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
2656	lesserextent32.exe
2464	lesserextent32.exe

Loads dropped DLL 5 IoCs

Processes:

fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exefdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp

pid	process
2916	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe
2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.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 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
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:

fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp

pid process

2632 fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp

description	ioc
Destination IP	91.211.247.248

pid	process
2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exefdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp

description	pid	process	target process
PID 2916 wrote to memory of 2632	2916	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
PID 2916 wrote to memory of 2632	2916	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
PID 2916 wrote to memory of 2632	2916	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
PID 2916 wrote to memory of 2632	2916	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
PID 2916 wrote to memory of 2632	2916	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
PID 2916 wrote to memory of 2632	2916	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
PID 2916 wrote to memory of 2632	2916	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
PID 2632 wrote to memory of 2656	2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp	lesserextent32.exe
PID 2632 wrote to memory of 2656	2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp	lesserextent32.exe
PID 2632 wrote to memory of 2656	2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp	lesserextent32.exe
PID 2632 wrote to memory of 2656	2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp	lesserextent32.exe
PID 2632 wrote to memory of 2464	2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp	lesserextent32.exe
PID 2632 wrote to memory of 2464	2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp	lesserextent32.exe
PID 2632 wrote to memory of 2464	2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp	lesserextent32.exe
PID 2632 wrote to memory of 2464	2632	fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp	lesserextent32.exe

C:\Users\Admin\AppData\Local\Temp\fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe
"C:\Users\Admin\AppData\Local\Temp\fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2916

C:\Users\Admin\AppData\Local\Temp\is-RDBAQ.tmp\fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
"C:\Users\Admin\AppData\Local\Temp\is-RDBAQ.tmp\fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp" /SL5="$40016,4696942,54272,C:\Users\Admin\AppData\Local\Temp\fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2632

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i
3⤵
- Executes dropped EXE
PID:2656

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s
3⤵
- Executes dropped EXE
PID:2464

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
194d5f3439c81fec196f54abd9c2073a

SHA1
6afb33b612e1ae4b21d78809e6c8ca0ab32624f0

SHA256
6822f5450afe2c2622ebd989deb746a6f5f7a8f8278ddf7889d584700031d6e1

SHA512
99598bda27e248e304472490e70a146c83a515258844948c847df1b26e1efbbf894e38299cade6e5bd64909252ade9ca16101b30cbb3b1ce716a4b20c5fcf9c8

Download Submit
\Users\Admin\AppData\Local\Temp\is-7RN5U.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-7RN5U.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-RDBAQ.tmp\fdd9b956e7a373fbd8b41514b78a19637b3d033f18a98aab2dec7e90a4f53861.tmp
Filesize
680KB

MD5
dff4f58a01a8e88e4a2f821ca761d901

SHA1
e67e24669220213f895b68c0d662b02b03469b4a

SHA256
91b049634c65dbe18368e1f2ead4ae48f62b92fdfcd119ccea0919b68bf56e76

SHA512
049cebaa8bc30f2b7b90a49f6022271247fab2a3bc0fd2e9f36d1f27e0c37926f00deedd92b5d85a8b34f2f6e9b59ee3b7e12510cfa720935a86ba820132817a

Download Submit
memory/2464-105-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-111-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-138-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-133-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-130-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-127-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-124-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-72-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-121-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-118-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-76-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-114-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-80-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-83-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-86-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-89-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-92-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-93-0x0000000002250000-0x00000000022F2000-memory.dmp

Filesize
648KB

Download
memory/2464-99-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-102-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2464-108-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2632-12-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2632-77-0x0000000003440000-0x0000000003705000-memory.dmp

Filesize
2.8MB

Download
memory/2632-75-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2632-64-0x0000000003440000-0x0000000003705000-memory.dmp

Filesize
2.8MB

Download
memory/2656-70-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2656-66-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2656-65-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2916-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2916-74-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2916-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads