ece8a18ca4213a95ef9b7d6f9bf18b81572c159cf2c7a836d70e2716cc7253da

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02/03/2024, 12:40

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General

Target
$PLUGINSDIR/npcap-1.71.exe
Size 1.1MB
Sample240302-pwl9asde86
SHA256 5ccb61296c48e3f8cd20db738784bd7bf0daf8fce630f89892678b6dda4e533c
MD5 40cfea6d5a3ff15caf6dd4ae88a012b2
SHA1 287b229cecf54ea110a8b8422dcda20922bdf65e
SHA512 6ac4955286a4927ce43f7e85783631c9a801605c89a18ba95dde34d90eecbf4825b09e116890c8aca8defff767ad14843303dd557a67636bed1f1709b5399024
SSDEEP 24576:AsYWFL4QHgF62xcgglC74wf9M3pK/Sn0Oaz+yruSOnN:1L4QAF6CFhl1Msqn0Oaa7
MD5 SHA1 SHA512 SSDEEP

Score

4^/10

Malware Config

Signatures

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Npcap\install.log	npcap-1.71.exe

Loads dropped DLL 4 IoCs

pid	Process
2036	npcap-1.71.exe
2036	npcap-1.71.exe
2036	npcap-1.71.exe
2036	npcap-1.71.exe

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2036	npcap-1.71.exe

Suspicious use of AdjustPrivilegeToken 40 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2792	WMIC.exe
Token: SeSecurityPrivilege	2792	WMIC.exe
Token: SeTakeOwnershipPrivilege	2792	WMIC.exe
Token: SeLoadDriverPrivilege	2792	WMIC.exe
Token: SeSystemProfilePrivilege	2792	WMIC.exe
Token: SeSystemtimePrivilege	2792	WMIC.exe
Token: SeProfSingleProcessPrivilege	2792	WMIC.exe
Token: SeIncBasePriorityPrivilege	2792	WMIC.exe
Token: SeCreatePagefilePrivilege	2792	WMIC.exe
Token: SeBackupPrivilege	2792	WMIC.exe
Token: SeRestorePrivilege	2792	WMIC.exe
Token: SeShutdownPrivilege	2792	WMIC.exe
Token: SeDebugPrivilege	2792	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2792	WMIC.exe
Token: SeRemoteShutdownPrivilege	2792	WMIC.exe
Token: SeUndockPrivilege	2792	WMIC.exe
Token: SeManageVolumePrivilege	2792	WMIC.exe
Token: 33	2792	WMIC.exe
Token: 34	2792	WMIC.exe
Token: 35	2792	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2792	WMIC.exe
Token: SeSecurityPrivilege	2792	WMIC.exe
Token: SeTakeOwnershipPrivilege	2792	WMIC.exe
Token: SeLoadDriverPrivilege	2792	WMIC.exe
Token: SeSystemProfilePrivilege	2792	WMIC.exe
Token: SeSystemtimePrivilege	2792	WMIC.exe
Token: SeProfSingleProcessPrivilege	2792	WMIC.exe
Token: SeIncBasePriorityPrivilege	2792	WMIC.exe
Token: SeCreatePagefilePrivilege	2792	WMIC.exe
Token: SeBackupPrivilege	2792	WMIC.exe
Token: SeRestorePrivilege	2792	WMIC.exe
Token: SeShutdownPrivilege	2792	WMIC.exe
Token: SeDebugPrivilege	2792	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2792	WMIC.exe
Token: SeRemoteShutdownPrivilege	2792	WMIC.exe
Token: SeUndockPrivilege	2792	WMIC.exe
Token: SeManageVolumePrivilege	2792	WMIC.exe
Token: 33	2792	WMIC.exe
Token: 34	2792	WMIC.exe
Token: 35	2792	WMIC.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 2796	2036	npcap-1.71.exe	28
PID 2036 wrote to memory of 2796	2036	npcap-1.71.exe	28
PID 2036 wrote to memory of 2796	2036	npcap-1.71.exe	28
PID 2036 wrote to memory of 2796	2036	npcap-1.71.exe	28
PID 2796 wrote to memory of 2792	2796	cmd.exe	30
PID 2796 wrote to memory of 2792	2796	cmd.exe	30
PID 2796 wrote to memory of 2792	2796	cmd.exe	30
PID 2796 wrote to memory of 2792	2796	cmd.exe	30
PID 2796 wrote to memory of 2684	2796	cmd.exe	31
PID 2796 wrote to memory of 2684	2796	cmd.exe	31
PID 2796 wrote to memory of 2684	2796	cmd.exe	31
PID 2796 wrote to memory of 2684	2796	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\npcap-1.71.exe
"C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\npcap-1.71.exe"
1⤵
- Drops file in Program Files directory
- Loads dropped DLL
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\SysWOW64\cmd.exe
  cmd /Q /C "%SYSTEMROOT%\System32\wbem\wmic.exe qfe get hotfixid | %SYSTEMROOT%\System32\findstr.exe "^KB4474419""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\SysWOW64\wbem\WMIC.exe
    C:\Windows\System32\wbem\wmic.exe qfe get hotfixid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2792
- - C:\Windows\SysWOW64\findstr.exe
    C:\Windows\System32\findstr.exe "^KB4474419"
    3⤵
    PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

InstallOptions.dll

Path \Users\Admin\AppData\Local\Temp\nst15A5.tmp\InstallOptions.dll
Size 22KB
SHA256 61ea114d9d0cd1e884535095aa3527a6c28df55a4ecee733c8c398f50b84cc3d
MD5 170c17ac80215d0a377b42557252ae10
SHA1 4cbab6cc189d02170dd3ba7c25aa492031679411
SHA512 0fd65cad0fcaa98083c2021de3d6429e79978658809c62ae9e4ed630c016915ced36aa52f2f692986c3b600c92325e79fd6d757634e8e02d5e582ff03679163f
SSDEEP 384:E0C43tPegZ3eBaRwCPOYY7nNYXCA/YosaWqZmZsHLA+KhHgt:EBTgZ3eBTCmrnNAEQ1hKhHgt
MD5 SHA1 SHA512 SSDEEP

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System.dll

Path \Users\Admin\AppData\Local\Temp\nst15A5.tmp\System.dll
Size 19KB
SHA256 7efe73a8d32ed1b01727ad4579e9eec49c9309f2cb7bf03c8afa80d70242d1c0
MD5 f020a8d9ede1fb2af3651ad6e0ac9cb1
SHA1 341f9345d669432b2a51d107cbd101e8b82e37b1
SHA512 408fa5a797d3ff4b917bb4107771687004ba507a33cb5944b1cc3155e0372cb3e04a147f73852b9134f138ff709af3b0fb493cd8fa816c59e9f3d9b5649c68c4
SSDEEP 384:u8+Qlt70Fj/lQRY/9VjjgLmqZmZsHLAMThHdjnG:uSqFjm6YLP17ThHdC
MD5 SHA1 SHA512 SSDEEP

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nsExec.dll

Path \Users\Admin\AppData\Local\Temp\nst15A5.tmp\nsExec.dll
Size 14KB
SHA256 274e53dc8c5ddc273a6f5683b71b882ef8917029e2eaf6c8dbee0c62d999225d
MD5 f9e61a25016dcb49867477c1e71a704e
SHA1 c01dc1fa7475e4812d158d6c00533410c597b5d9
SHA512 b4a6289ef9e761e29dd5362fecb1707c97d7cb3e160f4180036a96f2f904b2c64a075b5bf0fea4a3bb94dea97f3cfa0d057d3d6865c68da65fdcb9c3070c33d8
SSDEEP 192:JDkDr/HA5v6G2IElFernNQZGdHskJw7YUXmZscF8Bd1LOtNBZHld3Mu:aDrvAxnJGernNQZGdHVqZmZsHLOtLhHH
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads