xworm | 212aca6c26f53a9a28f22019f2ce4143daa98db2fdb0c9515f7e6e2fb6822e0e

Analysis

max time kernel
35s
max time network
39s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15-05-2024 00:27

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General

Target

dotNET_Reactor.exe
Size

15.9MB
MD5

b8b690a0a2b61714b7f4a928a513182f
SHA1

63e466c49496a8be6a0f86644b031fd1db880c82
SHA256

212aca6c26f53a9a28f22019f2ce4143daa98db2fdb0c9515f7e6e2fb6822e0e
SHA512

3c1605c6ae9020d2ec13deb891c86eb0d43d0e106c41e969e890b875f706c7f607c03a5ae4236d89fe40c367ad8eb0e4cb78aeb1b9ea6764937708bf4b250463
SSDEEP

393216:4EjFakaECvYN6k0dgW7YMCDNlM7TMLl+BB1f9qTs7:4KWECQt02W7YXKXZBVETs

Score

10^/10

xworm zgrat rat trojan vmprotect

Malware Config

Extracted

Family

xworm

amazonshipping.duckdns.org:7000

Attributes

Install_directory
%LocalAppData%
install_file
MSBuild.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x0006000000023270-20.dat	family_xworm
behavioral1/memory/4636-28-0x00000000004A0000-0x00000000004B6000-memory.dmp	family_xworm

Detect ZGRat V1 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4444-12-0x000000000A2C0000-0x000000000B06C000-memory.dmp	family_zgrat_v1
behavioral1/memory/4444-14-0x000000000C070000-0x000000000CE1A000-memory.dmp	family_zgrat_v1
behavioral1/memory/4728-44-0x0000000000590000-0x000000000183A000-memory.dmp	family_zgrat_v1
behavioral1/memory/4728-86-0x0000000000590000-0x000000000183A000-memory.dmp	family_zgrat_v1

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat

.NET Reactor proctector 4 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

Processes:

resource	yara_rule
behavioral1/memory/4444-12-0x000000000A2C0000-0x000000000B06C000-memory.dmp	net_reactor
behavioral1/memory/4444-14-0x000000000C070000-0x000000000CE1A000-memory.dmp	net_reactor
behavioral1/memory/4728-44-0x0000000000590000-0x000000000183A000-memory.dmp	net_reactor
behavioral1/memory/4728-86-0x0000000000590000-0x000000000183A000-memory.dmp	net_reactor

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:

dotNET_Reactor.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	dotNET_Reactor.exe

Drops startup file 2 IoCs

Processes:

winsvc.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MSBuild.lnk	winsvc.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MSBuild.lnk	winsvc.exe

Executes dropped EXE 2 IoCs

Processes:

winsvc.exedotNET_Reactor.exe

pid	Process
4636	winsvc.exe
4728	dotNET_Reactor.exe

VMProtect packed file 3 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
behavioral1/memory/4444-7-0x0000000000400000-0x0000000002399000-memory.dmp	vmprotect
behavioral1/memory/4444-11-0x0000000000400000-0x0000000002399000-memory.dmp	vmprotect
behavioral1/memory/4444-41-0x0000000000400000-0x0000000002399000-memory.dmp	vmprotect

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

Processes:

dotNET_Reactor.exe

pid	Process
4728	dotNET_Reactor.exe
4728	dotNET_Reactor.exe
4728	dotNET_Reactor.exe
4728	dotNET_Reactor.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

taskmgr.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

dotNET_Reactor.exetaskmgr.exe

pid	Process
4444	dotNET_Reactor.exe
4444	dotNET_Reactor.exe
4444	dotNET_Reactor.exe
4444	dotNET_Reactor.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

winsvc.exetaskmgr.exe

description	pid	Process
Token: SeDebugPrivilege	4636	winsvc.exe
Token: SeDebugPrivilege	4636	winsvc.exe
Token: SeDebugPrivilege	2396	taskmgr.exe
Token: SeSystemProfilePrivilege	2396	taskmgr.exe
Token: SeCreateGlobalPrivilege	2396	taskmgr.exe

Suspicious use of FindShellTrayWindow 23 IoCs

Processes:

taskmgr.exe

pid	Process
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe

Suspicious use of SendNotifyMessage 23 IoCs

Processes:

taskmgr.exe

pid	Process
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe
2396	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

dotNET_Reactor.exe

pid	Process
4728	dotNET_Reactor.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

dotNET_Reactor.exe

description	pid	Process	procid_target
PID 4444 wrote to memory of 4636	4444	dotNET_Reactor.exe	85
PID 4444 wrote to memory of 4636	4444	dotNET_Reactor.exe	85
PID 4444 wrote to memory of 4728	4444	dotNET_Reactor.exe	86
PID 4444 wrote to memory of 4728	4444	dotNET_Reactor.exe	86
PID 4444 wrote to memory of 4728	4444	dotNET_Reactor.exe	86

C:\Users\Admin\AppData\Local\Temp\dotNET_Reactor.exe
"C:\Users\Admin\AppData\Local\Temp\dotNET_Reactor.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Users\Admin\AppData\Local\winsvc.exe
  "C:\Users\Admin\AppData\Local\winsvc.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4636
- C:\Users\Admin\AppData\Local\dotNET_Reactor.exe
  "C:\Users\Admin\AppData\Local\dotNET_Reactor.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetWindowsHookEx
  PID:4728

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\dotNET_Reactor.exe.log

Filesize
617B

MD5
bf55c4633c61e64df0d3bddedaa34ff1

SHA1
6654258618f565a65e4c6ad6bbd315f588fbe4a8

SHA256
90446583cf40e550a68aba002bbcea8ee63e6884b2de65f0b0519c581e0d1be7

SHA512
38c898644d117519a4e4b5c7e6a086c8144303f4893ec30266912403dde54f9f0c09122cd0e99fcdf96ff7bdeca22003d1b03fba70a714354945a5593127ae62

Download Submit
C:\Users\Admin\AppData\Local\dotNET_Reactor.exe

Filesize
13.3MB

MD5
bd73df4cf427511993075f7a16e037a5

SHA1
63f116641b0655f53e93d62ae559d510ed5af134

SHA256
fa0a32d408a8df70ec44f3d2374b058f57b86ff49b8068b8c68f8505d3463970

SHA512
49ad63e65e1f6a454778c904727c948969145eb09457105093af463d933413a7d30437051c7ddb8ded0b46d38b2018a1a78c83af582ab6775bef870057a9dfc3

Download Submit
C:\Users\Admin\AppData\Local\winsvc.exe

Filesize
59KB

MD5
ecbd12573e67dbc280b6dc8ccc8cd2a3

SHA1
39d3fbb43a066cd9fec4d5ee2f97203de8e8afb6

SHA256
5c1e8d9858960da6fd36b10afd348d8923306396f551105db2a148874782cfba

SHA512
3e8d828e067584b105c23172e401b14716d7e605b77207bbf3e837d812d4f9c3b507ca8778427473ef8a054bc78a6d44f476c07a6df2210cdb0d085fd63a056f

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MSBuild.lnk

Filesize
966B

MD5
dfd32111bf17031031721d13e6c062bc

SHA1
d16dca1ca89bc187add0f4bb0a489633934bda5d

SHA256
86168ba1e4ee96fcb8a67d0d89549259f34ab2a324679482c6fe69a13d45eef3

SHA512
5b8f9a7c6d40914685c5e7654d4a7f0bbd38223f1b22b302f47cb6a33d8665ed4f7d3f86f517a97f6477e7020d73e7ece33a315da14eb3156f267644d23c6692

Download Submit
memory/2396-70-0x0000019CA7350000-0x0000019CA7351000-memory.dmp

Filesize
4KB

Download
memory/2396-69-0x0000019CA7350000-0x0000019CA7351000-memory.dmp

Filesize
4KB

Download
memory/2396-74-0x0000019CA7350000-0x0000019CA7351000-memory.dmp

Filesize
4KB

Download
memory/2396-75-0x0000019CA7350000-0x0000019CA7351000-memory.dmp

Filesize
4KB

Download
memory/2396-76-0x0000019CA7350000-0x0000019CA7351000-memory.dmp

Filesize
4KB

Download
memory/2396-78-0x0000019CA7350000-0x0000019CA7351000-memory.dmp

Filesize
4KB

Download
memory/2396-77-0x0000019CA7350000-0x0000019CA7351000-memory.dmp

Filesize
4KB

Download
memory/2396-79-0x0000019CA7350000-0x0000019CA7351000-memory.dmp

Filesize
4KB

Download
memory/2396-80-0x0000019CA7350000-0x0000019CA7351000-memory.dmp

Filesize
4KB

Download
memory/2396-68-0x0000019CA7350000-0x0000019CA7351000-memory.dmp

Filesize
4KB

Download
memory/4444-9-0x0000000000426000-0x00000000013B0000-memory.dmp

Filesize
15.5MB

Download
memory/4444-1-0x0000000002510000-0x0000000002511000-memory.dmp

Filesize
4KB

Download
memory/4444-15-0x0000000009C20000-0x0000000009CBC000-memory.dmp

Filesize
624KB

Download
memory/4444-6-0x0000000004040000-0x0000000004041000-memory.dmp

Filesize
4KB

Download
memory/4444-41-0x0000000000400000-0x0000000002399000-memory.dmp

Filesize
31.6MB

Download
memory/4444-4-0x0000000004020000-0x0000000004021000-memory.dmp

Filesize
4KB

Download
memory/4444-0-0x0000000002500000-0x0000000002501000-memory.dmp

Filesize
4KB

Download
memory/4444-5-0x0000000004030000-0x0000000004031000-memory.dmp

Filesize
4KB

Download
memory/4444-14-0x000000000C070000-0x000000000CE1A000-memory.dmp

Filesize
13.7MB

Download
memory/4444-45-0x0000000000426000-0x00000000013B0000-memory.dmp

Filesize
15.5MB

Download
memory/4444-2-0x0000000002520000-0x0000000002521000-memory.dmp

Filesize
4KB

Download
memory/4444-3-0x0000000002530000-0x0000000002531000-memory.dmp

Filesize
4KB

Download
memory/4444-7-0x0000000000400000-0x0000000002399000-memory.dmp

Filesize
31.6MB

Download
memory/4444-11-0x0000000000400000-0x0000000002399000-memory.dmp

Filesize
31.6MB

Download
memory/4444-12-0x000000000A2C0000-0x000000000B06C000-memory.dmp

Filesize
13.7MB

Download
memory/4444-13-0x0000000009500000-0x0000000009AA4000-memory.dmp

Filesize
5.6MB

Download
memory/4636-66-0x00007FFD5BCF0000-0x00007FFD5C7B1000-memory.dmp

Filesize
10.8MB

Download
memory/4636-27-0x00007FFD5BCF3000-0x00007FFD5BCF5000-memory.dmp

Filesize
8KB

Download
memory/4636-28-0x00000000004A0000-0x00000000004B6000-memory.dmp

Filesize
88KB

Download
memory/4728-44-0x0000000000590000-0x000000000183A000-memory.dmp

Filesize
18.7MB

Download
memory/4728-47-0x0000000007890000-0x0000000007922000-memory.dmp

Filesize
584KB

Download
memory/4728-56-0x000000000CA10000-0x000000000CA50000-memory.dmp

Filesize
256KB

Download
memory/4728-55-0x000000000B8C0000-0x000000000B8CE000-memory.dmp

Filesize
56KB

Download
memory/4728-54-0x000000000C830000-0x000000000C868000-memory.dmp

Filesize
224KB

Download
memory/4728-53-0x000000000B6B0000-0x000000000B6B8000-memory.dmp

Filesize
32KB

Download
memory/4728-42-0x0000000000590000-0x000000000183A000-memory.dmp

Filesize
18.7MB

Download
memory/4728-46-0x0000000006A90000-0x0000000006AF6000-memory.dmp

Filesize
408KB

Download
memory/4728-86-0x0000000000590000-0x000000000183A000-memory.dmp

Filesize
18.7MB

Download