xworm | 972adedc69f159942f3fab6528d80e428066fa8ce297b0be6d4af988185711dc

General

Target

NursultanSetup.exe
Size

59KB
MD5

68152587ca46bf9974ad4e5a0ac77b47
SHA1

5435ae05b1cf0eac83d5635e20a52214432260ef
SHA256

972adedc69f159942f3fab6528d80e428066fa8ce297b0be6d4af988185711dc
SHA512

7aeb7e4c6c94357061e05cac1530cf922191655679e82c36b7f06c4106b966c1bdd18e86035437c87953fa3c4adc60b021b3bd5859df3b62f9acf12db563b520
SSDEEP

1536:Mpfw0K7+wQS4f47Rb0jbtViTqLQr6npOcoqKGQG6:Mpfi7+wQSU+Rb0jbt6MOczTf6

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

Attributes

install_file
USB.exe
pastebin_url
https://pastebin.com/raw/mXwT6uNv

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2988-0-0x0000000001320000-0x0000000001336000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2748	powershell.exe
2700	powershell.exe
2988	NursultanSetup.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2988	NursultanSetup.exe
Token: SeDebugPrivilege	2748	powershell.exe
Token: SeDebugPrivilege	2700	powershell.exe
Token: SeDebugPrivilege	2988	NursultanSetup.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2988	NursultanSetup.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 2748	2988	NursultanSetup.exe	29
PID 2988 wrote to memory of 2748	2988	NursultanSetup.exe	29
PID 2988 wrote to memory of 2748	2988	NursultanSetup.exe	29
PID 2988 wrote to memory of 2700	2988	NursultanSetup.exe	32
PID 2988 wrote to memory of 2700	2988	NursultanSetup.exe	32
PID 2988 wrote to memory of 2700	2988	NursultanSetup.exe	32

C:\Users\Admin\AppData\Local\Temp\NursultanSetup.exe
"C:\Users\Admin\AppData\Local\Temp\NursultanSetup.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\NursultanSetup.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2748
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'NursultanSetup.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar321D.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\K1IS58O9QXO4CKCZ4SW1.temp

Filesize
7KB

MD5
c812be3c73f89396f41a0d277fe13744

SHA1
0ce7fd88eed6456d184c659ad227618bc6a75674

SHA256
d13512fe972e086325838c226d8930b031dc36da72d8563b0dc9db2c87411347

SHA512
fc390e996dc697b20b82dfe1de33db68fe6ba9c73b54b3f633b68047936d28d2d3e14e404f7762dac9311c05e89aff11105db6790253faa6b1835349b17fbaf3

Download Submit
memory/2700-26-0x00000000029E0000-0x0000000002A60000-memory.dmp

Filesize
512KB

Download
memory/2700-27-0x00000000029E0000-0x0000000002A60000-memory.dmp

Filesize
512KB

Download
memory/2700-29-0x000007FEEE450000-0x000007FEEEDED000-memory.dmp

Filesize
9.6MB

Download
memory/2700-28-0x00000000029E0000-0x0000000002A60000-memory.dmp

Filesize
512KB

Download
memory/2700-25-0x000007FEEE450000-0x000007FEEEDED000-memory.dmp

Filesize
9.6MB

Download
memory/2700-21-0x000000001B710000-0x000000001B9F2000-memory.dmp

Filesize
2.9MB

Download
memory/2700-23-0x00000000026F0000-0x00000000026F8000-memory.dmp

Filesize
32KB

Download
memory/2700-24-0x00000000029E0000-0x0000000002A60000-memory.dmp

Filesize
512KB

Download
memory/2700-22-0x000007FEEE450000-0x000007FEEEDED000-memory.dmp

Filesize
9.6MB

Download
memory/2748-10-0x0000000002A40000-0x0000000002AC0000-memory.dmp

Filesize
512KB

Download
memory/2748-15-0x000007FEEF360000-0x000007FEEFCFD000-memory.dmp

Filesize
9.6MB

Download
memory/2748-13-0x0000000002A40000-0x0000000002AC0000-memory.dmp

Filesize
512KB

Download
memory/2748-14-0x0000000002A40000-0x0000000002AC0000-memory.dmp

Filesize
512KB

Download
memory/2748-12-0x0000000002A40000-0x0000000002AC0000-memory.dmp

Filesize
512KB

Download
memory/2748-11-0x000007FEEF360000-0x000007FEEFCFD000-memory.dmp

Filesize
9.6MB

Download
memory/2748-9-0x000007FEEF360000-0x000007FEEFCFD000-memory.dmp

Filesize
9.6MB

Download
memory/2748-8-0x0000000001F70000-0x0000000001F78000-memory.dmp

Filesize
32KB

Download
memory/2748-7-0x000000001B690000-0x000000001B972000-memory.dmp

Filesize
2.9MB

Download
memory/2988-0-0x0000000001320000-0x0000000001336000-memory.dmp

Filesize
88KB

Download
memory/2988-2-0x0000000000B90000-0x0000000000C10000-memory.dmp

Filesize
512KB

Download
memory/2988-1-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download
memory/2988-66-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download

Analysis

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