Analysis
-
max time kernel
143s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
03/08/2024, 19:11
Static task
static1
Behavioral task
behavioral1
Sample
crt.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
crt.exe
Resource
win10v2004-20240802-en
General
-
Target
crt.exe
-
Size
3.8MB
-
MD5
4087ac4aa59c087a40a7f6be6b1d1f41
-
SHA1
ec07e43fbf9c80668f05f07c355381547f3662c7
-
SHA256
0384c6409bb5afac939fef6bb65bb6e5ca9d61eee4f20652e754cf0410cb7ebb
-
SHA512
b1ab2aeb5f38be4f45abf7f56096702e2f2b715c5f7602130f8dc64b3301684075a9d45b89d8b187005f7378626f60fc36c04c7f8e9d50880d625fd6d5308f4d
-
SSDEEP
98304:NNF9XFgUtkpVLQ3gt3DPIYWYdRfIxbpjOsdIqbwjcOf12d3:hhFTqVM+3DUYdOxbEELbbOfQ9
Malware Config
Signatures
-
Detect Socks5Systemz Payload 1 IoCs
resource yara_rule behavioral2/memory/1592-78-0x00000000026B0000-0x0000000002752000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
-
Executes dropped EXE 3 IoCs
pid Process 320 crt.tmp 1860 jeengle32_64.exe 1592 jeengle32_64.exe -
Loads dropped DLL 1 IoCs
pid Process 320 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 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.
-
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.
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 320 crt.tmp 320 crt.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 320 crt.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1848 wrote to memory of 320 1848 crt.exe 84 PID 1848 wrote to memory of 320 1848 crt.exe 84 PID 1848 wrote to memory of 320 1848 crt.exe 84 PID 320 wrote to memory of 1860 320 crt.tmp 87 PID 320 wrote to memory of 1860 320 crt.tmp 87 PID 320 wrote to memory of 1860 320 crt.tmp 87 PID 320 wrote to memory of 1592 320 crt.tmp 88 PID 320 wrote to memory of 1592 320 crt.tmp 88 PID 320 wrote to memory of 1592 320 crt.tmp 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\crt.exe"C:\Users\Admin\AppData\Local\Temp\crt.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1848 -
C:\Users\Admin\AppData\Local\Temp\is-V1MIO.tmp\crt.tmp"C:\Users\Admin\AppData\Local\Temp\is-V1MIO.tmp\crt.tmp" /SL5="$601E8,3727048,54272,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:320 -
C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe"C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1860
-
-
C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe"C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1592
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
4.4MB
MD54925ca5d4f92f8f94143c07230ad902e
SHA1ee19d5ec9bf9ae559b8d9fdb5867fa82b69e56e8
SHA2563630e5ae47900bd8039dd6fd7fd0cac05286b029504b01dcc9d122f449576965
SHA512721118e2cdea68f407c48f3b04774a87aae65c1f3529b2149c49471d231fd0b8fe39125f654dda8d7f527901d8971595ba2ded8734bb27c986f94e2e4c59a4ee
-
Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
-
Filesize
692KB
MD596e2c8db3dd8e1f3632aab3b400e4b9a
SHA14272048cddf5a17cee879c2c421f61e33baeff69
SHA256624f7af3f2c4baa83666b9d02935116368c7660d5ee7059704f1d7279cde4cf2
SHA5121d1642d10d31bf54e78fa6b3bba5e31b4fe745f1834d61dcf5ffd1d99934c1d7ba3ecc4832d0c3519380f5ded71632bf084ad4cfb3f74785e54d434508a8e984