Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
09-06-2024 01:40
Static task
static1
Behavioral task
behavioral1
Sample
99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe
Resource
win10v2004-20240426-en
General
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Target
99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe
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Size
4.7MB
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MD5
9b1176e24facc6e241ad25eaa864e746
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SHA1
12746866303969d21b32ea5950ef7f429dc61513
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SHA256
99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b
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SHA512
df6b0ed0e7883bfbe531ec8dcf6baa8e9b1b85c30ceaa400286ffafa0076c6f3353830a13a94410c9d4b050f2efe1973d1600cade419a06d359a3dae36eb5aef
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SSDEEP
98304:mTChVFZg8XPK2LrLUMdmqIQ107Tz9zNVaJcoqaeQ8+An6:eCLFSOPtLnI17VNMeoqnnG
Malware Config
Extracted
socks5systemz
bpqufyo.com
http://bpqufyo.com/search/?q=67e28dd86b5cf27c420ff9177c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a371ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff819c9e8969b3f
http://bpqufyo.com/search/?q=67e28dd86b5cf27c420ff9177c27d78406abdd88be4b12eab517aa5c96bd86e9958249825a8bbc896c58e713bc90c91936b5281fc235a925ed3e00d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee929232ca6c9712
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/4700-85-0x0000000002880000-0x0000000002922000-memory.dmp family_socks5systemz behavioral2/memory/4700-108-0x0000000002880000-0x0000000002922000-memory.dmp family_socks5systemz behavioral2/memory/4700-109-0x0000000002880000-0x0000000002922000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Detects executables packed with VMProtect. 18 IoCs
Processes:
resource yara_rule behavioral2/memory/1892-60-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/1892-63-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/1892-64-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-67-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-70-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-73-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-76-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-79-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-82-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-87-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-92-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-95-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-98-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-101-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-104-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-107-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-113-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/4700-116-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect -
Executes dropped EXE 3 IoCs
Processes:
99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmplesserextent32.exelesserextent32.exepid process 1336 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp 1892 lesserextent32.exe 4700 lesserextent32.exe -
Loads dropped DLL 1 IoCs
Processes:
99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmppid process 1336 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.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 45.155.250.90 -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmppid process 1336 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmpdescription pid process target process PID 4928 wrote to memory of 1336 4928 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp PID 4928 wrote to memory of 1336 4928 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp PID 4928 wrote to memory of 1336 4928 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp PID 1336 wrote to memory of 1892 1336 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp lesserextent32.exe PID 1336 wrote to memory of 1892 1336 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp lesserextent32.exe PID 1336 wrote to memory of 1892 1336 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp lesserextent32.exe PID 1336 wrote to memory of 4700 1336 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp lesserextent32.exe PID 1336 wrote to memory of 4700 1336 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp lesserextent32.exe PID 1336 wrote to memory of 4700 1336 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp lesserextent32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe"C:\Users\Admin\AppData\Local\Temp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4928 -
C:\Users\Admin\AppData\Local\Temp\is-V29OJ.tmp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp"C:\Users\Admin\AppData\Local\Temp\is-V29OJ.tmp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp" /SL5="$800E0,4667057,54272,C:\Users\Admin\AppData\Local\Temp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1336 -
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i3⤵
- Executes dropped EXE
PID:1892 -
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s3⤵
- Executes dropped EXE
PID:4700
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exeFilesize
2.8MB
MD52a761f4fbde370399cfb8a3df34306dd
SHA1e2fa78cb38aa55ca48f337d22afc862016772bcf
SHA25609137001d363739719cd2fcb03f496861e4cf95fce651db08ebc2f153c36060c
SHA5123564aa2c9c7864e9dca0e9c0c57485028714c8824bd5234395cfac0b17f6e88979417d5ddf0e491857c02bfab4d247ae915b0b70c6f0e7bdae655b05fa45d8d6
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C:\Users\Admin\AppData\Local\Temp\is-CL240.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-V29OJ.tmp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmpFilesize
680KB
MD5dff4f58a01a8e88e4a2f821ca761d901
SHA1e67e24669220213f895b68c0d662b02b03469b4a
SHA25691b049634c65dbe18368e1f2ead4ae48f62b92fdfcd119ccea0919b68bf56e76
SHA512049cebaa8bc30f2b7b90a49f6022271247fab2a3bc0fd2e9f36d1f27e0c37926f00deedd92b5d85a8b34f2f6e9b59ee3b7e12510cfa720935a86ba820132817a
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memory/1336-69-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/1336-10-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/1892-64-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/1892-59-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/1892-60-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/1892-63-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-73-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-92-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-116-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-113-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-70-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-109-0x0000000002880000-0x0000000002922000-memory.dmpFilesize
648KB
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memory/4700-76-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-79-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-82-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-87-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-85-0x0000000002880000-0x0000000002922000-memory.dmpFilesize
648KB
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memory/4700-67-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-95-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-98-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-101-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-104-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-107-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
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memory/4700-108-0x0000000002880000-0x0000000002922000-memory.dmpFilesize
648KB
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memory/4928-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/4928-2-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/4928-68-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB