socks5systemz | 0384c6409bb5afac939fef6bb65bb6e5ca9d61eee4f20652e754cf0410cb7ebb

Analysis

max time kernel
141s
max time network
138s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
03/08/2024, 18:53

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General

Target
crt.exe
Size 3.8MB
Sample240803-xjsvbawgnh
SHA256 0384c6409bb5afac939fef6bb65bb6e5ca9d61eee4f20652e754cf0410cb7ebb
MD5 4087ac4aa59c087a40a7f6be6b1d1f41
SHA1 ec07e43fbf9c80668f05f07c355381547f3662c7
SHA512 b1ab2aeb5f38be4f45abf7f56096702e2f2b715c5f7602130f8dc64b3301684075a9d45b89d8b187005f7378626f60fc36c04c7f8e9d50880d625fd6d5308f4d
SSDEEP 98304:NNF9XFgUtkpVLQ3gt3DPIYWYdRfIxbpjOsdIqbwjcOf12d3:hhFTqVM+3DUYdOxbEELbbOfQ9
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2568-87-0x0000000002410000-0x00000000024B2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2368	crt.tmp
1680	jeengle32_64.exe
2568	jeengle32_64.exe

Loads dropped DLL 5 IoCs

pid	Process
2404	crt.exe
2368	crt.tmp
2368	crt.tmp
2368	crt.tmp
2368	crt.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	152.89.198.214

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

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	crt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	crt.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jeengle32_64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jeengle32_64.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2368	crt.tmp
2368	crt.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2368	crt.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2368	2404	crt.exe	30
PID 2404 wrote to memory of 2368	2404	crt.exe	30
PID 2404 wrote to memory of 2368	2404	crt.exe	30
PID 2404 wrote to memory of 2368	2404	crt.exe	30
PID 2404 wrote to memory of 2368	2404	crt.exe	30
PID 2404 wrote to memory of 2368	2404	crt.exe	30
PID 2404 wrote to memory of 2368	2404	crt.exe	30
PID 2368 wrote to memory of 1680	2368	crt.tmp	31
PID 2368 wrote to memory of 1680	2368	crt.tmp	31
PID 2368 wrote to memory of 1680	2368	crt.tmp	31
PID 2368 wrote to memory of 1680	2368	crt.tmp	31
PID 2368 wrote to memory of 2568	2368	crt.tmp	32
PID 2368 wrote to memory of 2568	2368	crt.tmp	32
PID 2368 wrote to memory of 2568	2368	crt.tmp	32
PID 2368 wrote to memory of 2568	2368	crt.tmp	32

C:\Users\Admin\AppData\Local\Temp\crt.exe
"C:\Users\Admin\AppData\Local\Temp\crt.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Users\Admin\AppData\Local\Temp\is-7SC53.tmp\crt.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-7SC53.tmp\crt.tmp" /SL5="$400F4,3727048,54272,C:\Users\Admin\AppData\Local\Temp\crt.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2368
- - C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe
    "C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1680
- - C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe
    "C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe" -s
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

jeengle32_64.exe

Path \Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe
Size 4.4MB
SHA256 3630e5ae47900bd8039dd6fd7fd0cac05286b029504b01dcc9d122f449576965
MD5 4925ca5d4f92f8f94143c07230ad902e
SHA1 ee19d5ec9bf9ae559b8d9fdb5867fa82b69e56e8
SHA512 721118e2cdea68f407c48f3b04774a87aae65c1f3529b2149c49471d231fd0b8fe39125f654dda8d7f527901d8971595ba2ded8734bb27c986f94e2e4c59a4ee
SSDEEP 49152:HUyVSBER8MCrQF8ZFO11/dhCmK6uupWcnTYe1fYzfPteOaG:HU6s1rQGrO11/TK6H9nMe1WfPte4
MD5 SHA1 SHA512 SSDEEP

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crt.tmp

Path \Users\Admin\AppData\Local\Temp\is-7SC53.tmp\crt.tmp
Size 692KB
SHA256 624f7af3f2c4baa83666b9d02935116368c7660d5ee7059704f1d7279cde4cf2
MD5 96e2c8db3dd8e1f3632aab3b400e4b9a
SHA1 4272048cddf5a17cee879c2c421f61e33baeff69
SHA512 1d1642d10d31bf54e78fa6b3bba5e31b4fe745f1834d61dcf5ffd1d99934c1d7ba3ecc4832d0c3519380f5ded71632bf084ad4cfb3f74785e54d434508a8e984
SSDEEP 12288:thu7eEcdCP8trP837szHUA6JCzS9Ntc3l3ER6orNjURoFDExyF:Pu7eEYCP8trP837szHUA60SLtcV3E95T
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-FA2MV.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-FA2MV.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

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memory/1680-57-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/1680-58-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/1680-62-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2368-16-0x0000000000400000-0x00000000004BD000-memory.dmp

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memory/2368-56-0x00000000066E0000-0x0000000006B43000-memory.dmp

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memory/2368-74-0x00000000066E0000-0x0000000006B43000-memory.dmp

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memory/2368-67-0x0000000000400000-0x00000000004BD000-memory.dmp

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memory/2404-0-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/2404-2-0x0000000000401000-0x000000000040B000-memory.dmp

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memory/2404-66-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/2568-70-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-87-0x0000000002410000-0x00000000024B2000-memory.dmp

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memory/2568-64-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-77-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-80-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-83-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-86-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-73-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-91-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-96-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-99-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-102-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-103-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-108-0x0000000000400000-0x0000000000863000-memory.dmp

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memory/2568-112-0x0000000000400000-0x0000000000863000-memory.dmp

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