f8036b4993d07ca0d117b299c9111370cfbb01c69da2ee831d8064c7f0da899e

Analysis

max time kernel
137s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
31-10-2023 17:05

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General

Target

4f9fa61a76fd02b904f57d327fc80f71.dll
Size

617KB
MD5

4f9fa61a76fd02b904f57d327fc80f71
SHA1

bd7d98a305d294e89505c5cbf5c692a0201c9f16
SHA256

f8036b4993d07ca0d117b299c9111370cfbb01c69da2ee831d8064c7f0da899e
SHA512

f379f49d8d5b1b00af3b8225f438d16b00a465ff8742087a35e26363e1829abb62996fd10df9a1eb58793d5f23ae37bc1cea6e875d24633af69c1f7aefd06434
SSDEEP

12288:T/cYjwx7s0zXoBA5ozd6IDqk0MzkC4sEEqtQGfbjcED/l6ZCJj:oYMx7s07h5ozdDntzTPEEVGfbjRD/l64

Score

1^/10

Malware Config

Signatures

Discovers systems in the same network 1 TTPs 2 IoCs

discovery

Remote System Discovery

T1018

pid	Process
4988	net.exe
3300	net.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
4164	ipconfig.exe

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
3452	systeminfo.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2231940048-779848787-2990559741-1000_Classes\CLSID\{13278D29-7CCB-CDAF-1B02-19B603662B95}	regsvr32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2231940048-779848787-2990559741-1000_Classes\CLSID\{13278D29-7CCB-CDAF-1B02-19B603662B95}\ = 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	regsvr32.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4556	regsvr32.exe
4556	regsvr32.exe

Suspicious use of AdjustPrivilegeToken 42 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2888	WMIC.exe
Token: SeSecurityPrivilege	2888	WMIC.exe
Token: SeTakeOwnershipPrivilege	2888	WMIC.exe
Token: SeLoadDriverPrivilege	2888	WMIC.exe
Token: SeSystemProfilePrivilege	2888	WMIC.exe
Token: SeSystemtimePrivilege	2888	WMIC.exe
Token: SeProfSingleProcessPrivilege	2888	WMIC.exe
Token: SeIncBasePriorityPrivilege	2888	WMIC.exe
Token: SeCreatePagefilePrivilege	2888	WMIC.exe
Token: SeBackupPrivilege	2888	WMIC.exe
Token: SeRestorePrivilege	2888	WMIC.exe
Token: SeShutdownPrivilege	2888	WMIC.exe
Token: SeDebugPrivilege	2888	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2888	WMIC.exe
Token: SeRemoteShutdownPrivilege	2888	WMIC.exe
Token: SeUndockPrivilege	2888	WMIC.exe
Token: SeManageVolumePrivilege	2888	WMIC.exe
Token: 33	2888	WMIC.exe
Token: 34	2888	WMIC.exe
Token: 35	2888	WMIC.exe
Token: 36	2888	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2888	WMIC.exe
Token: SeSecurityPrivilege	2888	WMIC.exe
Token: SeTakeOwnershipPrivilege	2888	WMIC.exe
Token: SeLoadDriverPrivilege	2888	WMIC.exe
Token: SeSystemProfilePrivilege	2888	WMIC.exe
Token: SeSystemtimePrivilege	2888	WMIC.exe
Token: SeProfSingleProcessPrivilege	2888	WMIC.exe
Token: SeIncBasePriorityPrivilege	2888	WMIC.exe
Token: SeCreatePagefilePrivilege	2888	WMIC.exe
Token: SeBackupPrivilege	2888	WMIC.exe
Token: SeRestorePrivilege	2888	WMIC.exe
Token: SeShutdownPrivilege	2888	WMIC.exe
Token: SeDebugPrivilege	2888	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2888	WMIC.exe
Token: SeRemoteShutdownPrivilege	2888	WMIC.exe
Token: SeUndockPrivilege	2888	WMIC.exe
Token: SeManageVolumePrivilege	2888	WMIC.exe
Token: 33	2888	WMIC.exe
Token: 34	2888	WMIC.exe
Token: 35	2888	WMIC.exe
Token: 36	2888	WMIC.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4556 wrote to memory of 1036	4556	regsvr32.exe	104
PID 4556 wrote to memory of 1036	4556	regsvr32.exe	104
PID 1036 wrote to memory of 1696	1036	cmd.exe	106
PID 1036 wrote to memory of 1696	1036	cmd.exe	106
PID 4556 wrote to memory of 2888	4556	regsvr32.exe	107
PID 4556 wrote to memory of 2888	4556	regsvr32.exe	107
PID 4556 wrote to memory of 4164	4556	regsvr32.exe	109
PID 4556 wrote to memory of 4164	4556	regsvr32.exe	109
PID 4556 wrote to memory of 3452	4556	regsvr32.exe	111
PID 4556 wrote to memory of 3452	4556	regsvr32.exe	111
PID 4556 wrote to memory of 4548	4556	regsvr32.exe	115
PID 4556 wrote to memory of 4548	4556	regsvr32.exe	115
PID 4548 wrote to memory of 2408	4548	net.exe	117
PID 4548 wrote to memory of 2408	4548	net.exe	117
PID 4556 wrote to memory of 4516	4556	regsvr32.exe	118
PID 4556 wrote to memory of 4516	4556	regsvr32.exe	118
PID 4556 wrote to memory of 4492	4556	regsvr32.exe	120
PID 4556 wrote to memory of 4492	4556	regsvr32.exe	120
PID 4556 wrote to memory of 4988	4556	regsvr32.exe	122
PID 4556 wrote to memory of 4988	4556	regsvr32.exe	122
PID 4556 wrote to memory of 3300	4556	regsvr32.exe	124
PID 4556 wrote to memory of 3300	4556	regsvr32.exe	124
PID 4556 wrote to memory of 232	4556	regsvr32.exe	126
PID 4556 wrote to memory of 232	4556	regsvr32.exe	126
PID 232 wrote to memory of 1412	232	net.exe	128
PID 232 wrote to memory of 1412	232	net.exe	128

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:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4f9fa61a76fd02b904f57d327fc80f71.dll
1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4556
- C:\Windows\system32\cmd.exe
  cmd.exe /c chcp >&2
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1036
- - C:\Windows\system32\chcp.com
    chcp
    3⤵
    PID:1696
- C:\Windows\System32\Wbem\WMIC.exe
  WMIC /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get * /Format:List
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2888
- C:\Windows\system32\ipconfig.exe
  ipconfig /all
  2⤵
  - Gathers network information
  PID:4164
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:3452
- C:\Windows\system32\net.exe
  net config workstation
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4548
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 config workstation
    3⤵
    PID:2408
- C:\Windows\system32\nltest.exe
  nltest /domain_trusts
  2⤵
  PID:4516
- C:\Windows\system32\nltest.exe
  nltest /domain_trusts /all_trusts
  2⤵
  PID:4492
- C:\Windows\system32\net.exe
  net view /all /domain
  2⤵
  - Discovers systems in the same network
  PID:4988
- C:\Windows\system32\net.exe
  net view /all
  2⤵
  - Discovers systems in the same network
  PID:3300
- C:\Windows\system32\net.exe
  net group "Domain Admins" /domain
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:232
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 group "Domain Admins" /domain
    3⤵
    PID:1412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4556-1-0x0000000000D50000-0x0000000000D9F000-memory.dmp

Filesize
316KB

Download
memory/4556-2-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download
memory/4556-8-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download
memory/4556-9-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download
memory/4556-10-0x0000000000D50000-0x0000000000D9F000-memory.dmp

Filesize
316KB

Download
memory/4556-13-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download
memory/4556-14-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download
memory/4556-15-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download
memory/4556-16-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download
memory/4556-24-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download
memory/4556-27-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download
memory/4556-28-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download
memory/4556-30-0x00000000026F0000-0x000000000273C000-memory.dmp

Filesize
304KB

Download