socks5systemz | f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1

General

Target

f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe
Size

4.8MB
MD5

1d7d3477c7968ecc9e9bbe0f0bf9acff
SHA1

d4fcda77873baeef4b870dde9fa74cf49a6fb833
SHA256

f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1
SHA512

e7c90163aca05a530f982c002fbac1ca2da126b8aea2177fcec303952ad06b681fde5899945d40f5e54d7df14a2aafd4a045d256328c71bb46cb6966ce71f14b
SSDEEP

98304:+pmDGs/wmVFG+IoW2GZbyDCyxaSBUdPOJ8CYVSPsaNZC3FtlAd1Zcs:i0LRGxynaS1LY6TNSKXcs

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://erloskp.ua/search/?q=67e28dd86554fa2a495aa4197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a071ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6386f913c9e895

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2944-97-0x00000000023C0000-0x0000000002462000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp
2456	jenimmusicconverter.exe
2944	jenimmusicconverter.exe

Loads dropped DLL 6 IoCs

pid	Process
2092	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe
2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp
2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp
2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp
2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp
2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.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	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

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2804	2092	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe	28
PID 2092 wrote to memory of 2804	2092	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe	28
PID 2092 wrote to memory of 2804	2092	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe	28
PID 2092 wrote to memory of 2804	2092	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe	28
PID 2092 wrote to memory of 2804	2092	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe	28
PID 2092 wrote to memory of 2804	2092	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe	28
PID 2092 wrote to memory of 2804	2092	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe	28
PID 2804 wrote to memory of 2456	2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp	29
PID 2804 wrote to memory of 2456	2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp	29
PID 2804 wrote to memory of 2456	2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp	29
PID 2804 wrote to memory of 2456	2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp	29
PID 2804 wrote to memory of 2944	2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp	30
PID 2804 wrote to memory of 2944	2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp	30
PID 2804 wrote to memory of 2944	2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp	30
PID 2804 wrote to memory of 2944	2804	f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp	30

C:\Users\Admin\AppData\Local\Temp\f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe
"C:\Users\Admin\AppData\Local\Temp\f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Users\Admin\AppData\Local\Temp\is-FORGS.tmp\f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-FORGS.tmp\f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp" /SL5="$400F4,4784545,54272,C:\Users\Admin\AppData\Local\Temp\f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2804
- - C:\Users\Admin\AppData\Local\Jenim Music Converter\jenimmusicconverter.exe
    "C:\Users\Admin\AppData\Local\Jenim Music Converter\jenimmusicconverter.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2456
- - C:\Users\Admin\AppData\Local\Jenim Music Converter\jenimmusicconverter.exe
    "C:\Users\Admin\AppData\Local\Jenim Music Converter\jenimmusicconverter.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2944

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\Jenim Music Converter\libeay32.dll

Filesize
2.0MB

MD5
1176a2fcbc3cfb77207db7575dd6a522

SHA1
e0a854c77a65e542712c9fe3feae2331fcddb7f4

SHA256
553200e21658e7976d496c52cc1aeb50446b877ccda4f0b073a553ec3fb48560

SHA512
bb00340e4931342c4db499d68e98542f401a985c062810225ee661a7a289a885dab8c64f37fb231212ad2a5d703f3fd0528e8402fc1033cf4128d075714e3f34

Download Submit
\Users\Admin\AppData\Local\Jenim Music Converter\jenimmusicconverter.exe

Filesize
1.7MB

MD5
391e900afebd2e25bacaff7b5b65b469

SHA1
d98cac1c105fbaf4cbf1291082816ffefd9ee825

SHA256
e15288b4c1b02ee97302f126470f1466f3d8bab3927e5961acf424f28eb003cc

SHA512
b86771a466405ecf65e037197cebd77b5c441b89d2c7f0f955a1dfab12d4c4bd2efc63d1d71a72849b4e852271df702821265dbef91719eacea050f93967a1ce

Download Submit
\Users\Admin\AppData\Local\Temp\is-F5G0O.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-F5G0O.tmp\_isetup\_isdecmp.dll

Filesize
32KB

MD5
b6f11a0ab7715f570f45900a1fe84732

SHA1
77b1201e535445af5ea94c1b03c0a1c34d67a77b

SHA256
e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

SHA512
78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

Download Submit
\Users\Admin\AppData\Local\Temp\is-F5G0O.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-FORGS.tmp\f638a2ac9768a9b9820a0953cd4fef41b58b8c0545fddd0b2a634b5fd1f6e6a1.tmp

Filesize
695KB

MD5
c20681cc4555e94fa86e37fd93665ee3

SHA1
1b10057bf7788b5af83f9cc96065fffcc214423e

SHA256
96f0e6fdfee29ad7897c969a579a6ffea353ef558bb1d9cb7ca941eb2c71ab03

SHA512
88895e93665098f00ec4f8c0a44a6b8d4c0209f80b508a2944a77ca54722ec05440d825202af246344d7e1942b8ccef63dfc7db36bbbbce49a52d1f85d126c5f

Download Submit
memory/2092-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2092-78-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2092-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2456-73-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2456-68-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2456-69-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2456-72-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2804-83-0x00000000037B0000-0x000000000395A000-memory.dmp

Filesize
1.7MB

Download
memory/2804-19-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2804-67-0x00000000037B0000-0x000000000395A000-memory.dmp

Filesize
1.7MB

Download
memory/2804-79-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2944-106-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-112-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-84-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-87-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-90-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-93-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-96-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-97-0x00000000023C0000-0x0000000002462000-memory.dmp

Filesize
648KB

Download
memory/2944-103-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-76-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-109-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-80-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-115-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-118-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-122-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-125-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-128-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-131-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-134-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-137-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2944-142-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download

Analysis

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