socks5systemz | 712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2

General

Target

712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.exe
Size

1.8MB
MD5

8112cdcf3e79a3a8a3216c6717a91783
SHA1

a7f099c9d286e0e0e9a933daa7e6a9390c889832
SHA256

712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2
SHA512

51d325a4ec08275a472e4e92ca6e40673e63f3da995c3ac7c8bec886fcacbba01f95f3cd6319d0bece8fb96074216f6ddb6aaf06777f0dfbc4a75b94685cf1bf
SSDEEP

24576:320U/JjmoYq7FWknmfXBx2PFCnlK9oTD+Kl9iXCWgCReJdd18K4TIvjgvCNB:329Vmo/mvSPFCl46D+K8Ct7CggKNB

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://buktuok.com/search/?q=67e28dd86c0ea7794406f94d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978f671ea771795af8e05c645db22f31df92d8838ed12a666d307eca743ec4c2b07b52966923a678af918c1ef94

http://buktuok.com/search/?q=67e28dd86c0ea7794406f94d7c27d78406abdd88be4b12eab517aa5c96bd86e99d8245815a8bbc896c58e713bc90c91136b5281fc235a925ed3e55d6bd974a95129070b616e96cc92be20ea478cc51bbe358b90d3b4eed3233d1626a8ff810c0eb93933acd6e

Signatures

Detect Socks5Systemz Payload 5 IoCs

resource	yara_rule
behavioral2/memory/4012-66-0x00000000008F0000-0x0000000000994000-memory.dmp	family_socks5systemz
behavioral2/memory/4012-69-0x00000000008F0000-0x0000000000994000-memory.dmp	family_socks5systemz
behavioral2/memory/4012-78-0x00000000008F0000-0x0000000000994000-memory.dmp	family_socks5systemz
behavioral2/memory/4012-91-0x00000000008F0000-0x0000000000994000-memory.dmp	family_socks5systemz
behavioral2/memory/4012-92-0x00000000008F0000-0x0000000000994000-memory.dmp	family_socks5systemz

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

Detects executables packed with VMProtect. 18 IoCs

resource	yara_rule
behavioral2/memory/4956-39-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4956-42-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-46-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-49-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-53-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-54-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-57-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-60-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-63-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-67-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-74-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-77-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-81-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-84-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-87-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-90-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-96-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4012-99-0x0000000000400000-0x00000000005AA000-memory.dmp	INDICATOR_EXE_Packed_VMProtect

Executes dropped EXE 3 IoCs

pid	Process
5044	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.tmp
4956	linatext.exe
4012	linatext.exe

Loads dropped DLL 1 IoCs

pid	Process
5044	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 444 wrote to memory of 5044	444	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.exe	89
PID 444 wrote to memory of 5044	444	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.exe	89
PID 444 wrote to memory of 5044	444	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.exe	89
PID 5044 wrote to memory of 4956	5044	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.tmp	93
PID 5044 wrote to memory of 4956	5044	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.tmp	93
PID 5044 wrote to memory of 4956	5044	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.tmp	93
PID 5044 wrote to memory of 4012	5044	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.tmp	94
PID 5044 wrote to memory of 4012	5044	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.tmp	94
PID 5044 wrote to memory of 4012	5044	712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.tmp	94

C:\Users\Admin\AppData\Local\Temp\712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.exe
"C:\Users\Admin\AppData\Local\Temp\712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:444
- C:\Users\Admin\AppData\Local\Temp\is-3AD5O.tmp\712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-3AD5O.tmp\712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.tmp" /SL5="$60178,1514293,54272,C:\Users\Admin\AppData\Local\Temp\712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:5044
- - C:\Users\Admin\AppData\Local\Lina Text\linatext.exe
    "C:\Users\Admin\AppData\Local\Lina Text\linatext.exe" -i
    3⤵
    - Executes dropped EXE
    PID:4956
- - C:\Users\Admin\AppData\Local\Lina Text\linatext.exe
    "C:\Users\Admin\AppData\Local\Lina Text\linatext.exe" -s
    3⤵
    - Executes dropped EXE
    PID:4012

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

C:\Users\Admin\AppData\Local\Lina Text\linatext.exe

Filesize
1.6MB

MD5
09b919670fc55e8a5c1535754c0e9058

SHA1
fb84732cec9eba491fa9c1a55e9a54fd4f992a13

SHA256
c5a84b70a6a9ab2ff06d5d656f1e07b799f12b0eeaacf162eb5b20c2c4eb7f24

SHA512
678ec2c21e886b36c821c3f8fff1481c27b8992f53ed12238a05d948db1a45b692350205fc37a97b1400c2e7aa79bedb855cf1b0482d64c35a541ce81886df7e

Download Submit
C:\Users\Admin\AppData\Local\Lina Text\linatext.exe

Filesize
384KB

MD5
9ea1022170098ef9fe8aa8efc14decbc

SHA1
0bc418edff2298e75ba776728e04400ed5dc8af0

SHA256
fdb12266236b64913eb4ca515f8d5653bc677a172130c9cbd3d40bf1799afde5

SHA512
723011277c8d022e8ce80abad6b741acdade7539893340f82b1a3a3c84531d68e1576cdc117ea9ac62813397c883734e5638fd841721b21fbc52d0a1b87b85f6

Download Submit
C:\Users\Admin\AppData\Local\Lina Text\linatext.exe

Filesize
1.7MB

MD5
c40fab9c1a5d748e3bb93fa65dc24877

SHA1
a68f8860a6956b9458105b13834cfa0b0bf64895

SHA256
71d7ecf3eb8ff6337ee155768e6735ae67ef0ac39d598eee7600523ec752f0e0

SHA512
099ea86cfb6d285dcf5eeb9d695256bc719f05f7d3eea9bd9a13d31fc8530a141b0d63c0deeb221bdfa245b89a7836e1dbb318e236e81c0aaa7088385a2b92cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3AD5O.tmp\712b40e35c119ff3900a1dfb374e1723b3020930c29c2c7ed5b54ed5ecd614f2.tmp

Filesize
677KB

MD5
33da9dc521f467c0405d3ef5377ce04b

SHA1
5249d7ce5dfabe5ee6d2fc7d3f3eba1e866b7d1f

SHA256
dbab8a7b2b45fc7001d5e34d3d45ccbe93a7591f12910281acf2c32f8c4e631c

SHA512
a3093637e1d731eab58080e10706db1afbf6e79fbac6593733b61033f97875ecbe230311e9741d349625ec3a66a6435318846d35290db8cd00af76d692699a55

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-F5DGO.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/444-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/444-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4012-53-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-63-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-99-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-45-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-46-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-96-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-92-0x00000000008F0000-0x0000000000994000-memory.dmp

Filesize
656KB

Download
memory/4012-49-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-91-0x00000000008F0000-0x0000000000994000-memory.dmp

Filesize
656KB

Download
memory/4012-90-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-54-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-57-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-60-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-87-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-66-0x00000000008F0000-0x0000000000994000-memory.dmp

Filesize
656KB

Download
memory/4012-67-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-69-0x00000000008F0000-0x0000000000994000-memory.dmp

Filesize
656KB

Download
memory/4012-74-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-77-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-78-0x00000000008F0000-0x0000000000994000-memory.dmp

Filesize
656KB

Download
memory/4012-81-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4012-84-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4956-39-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4956-37-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4956-42-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/5044-6-0x0000000000660000-0x0000000000661000-memory.dmp

Filesize
4KB

Download
memory/5044-50-0x0000000000660000-0x0000000000661000-memory.dmp

Filesize
4KB

Download
memory/5044-48-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download

Analysis

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