2b1aebab5992f084e10ed9fbacaac61bea0ff101fc949e428c8fb762afbcbdfc

Analysis

max time kernel
149s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
01/05/2024, 19:56

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General

Target

2b1aebab5992f084e10ed9fbacaac61bea0ff101fc949e428c8fb762afbcbdfc.exe
Size

72KB
MD5

8b680245bd365e699f97fb0939425c81
SHA1

54e602a446051ecc04728eda2e1add87726a94b4
SHA256

2b1aebab5992f084e10ed9fbacaac61bea0ff101fc949e428c8fb762afbcbdfc
SHA512

fda07b6edbbaa370380672f0ad9da190696bd719c529ce7e64c7985e4e11923a956d685a2a0e64945fe8fba97570d9e0ed799a593cc37de914785777875c3001
SSDEEP

1536:xBoj3/OgHIerbSSuf9c/buo4iiugZb6hCPmXeu0XyxsdvDKci:noDvHDrbTuf9abJiugV6hyu0XyxsdvD8

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	esxivoad-coab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	esxivoad-coab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	esxivoad-coab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	esxivoad-coab.exe

Modifies Installed Components in the registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{45424653-524b-4747-4542-4653524B4747}	esxivoad-coab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{45424653-524b-4747-4542-4653524B4747}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	esxivoad-coab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{45424653-524b-4747-4542-4653524B4747}\IsInstalled = "1"	esxivoad-coab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{45424653-524b-4747-4542-4653524B4747}\StubPath = "C:\\Windows\\system32\\tseanap-opeas.exe"	esxivoad-coab.exe

Sets file execution options in registry 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe	esxivoad-coab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a"	esxivoad-coab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\claheap.exe"	esxivoad-coab.exe

Executes dropped EXE 2 IoCs

pid	Process
376	esxivoad-coab.exe
4284	esxivoad-coab.exe

Windows security modification 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	esxivoad-coab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	esxivoad-coab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	esxivoad-coab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	esxivoad-coab.exe

Modifies WinLogon 2 TTPs 5 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}	esxivoad-coab.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	esxivoad-coab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a"	esxivoad-coab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\ecximit.dll"	esxivoad-coab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	esxivoad-coab.exe

Drops file in System32 directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\esxivoad-coab.exe	2b1aebab5992f084e10ed9fbacaac61bea0ff101fc949e428c8fb762afbcbdfc.exe
File opened for modification	C:\Windows\SysWOW64\claheap.exe	esxivoad-coab.exe
File created	C:\Windows\SysWOW64\claheap.exe	esxivoad-coab.exe
File created	C:\Windows\SysWOW64\ecximit.dll	esxivoad-coab.exe
File created	C:\Windows\SysWOW64\esxivoad-coab.exe	2b1aebab5992f084e10ed9fbacaac61bea0ff101fc949e428c8fb762afbcbdfc.exe
File opened for modification	C:\Windows\SysWOW64\tseanap-opeas.exe	esxivoad-coab.exe
File created	C:\Windows\SysWOW64\tseanap-opeas.exe	esxivoad-coab.exe
File opened for modification	C:\Windows\SysWOW64\ecximit.dll	esxivoad-coab.exe
File opened for modification	C:\Windows\SysWOW64\esxivoad-coab.exe	esxivoad-coab.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
4284	esxivoad-coab.exe
4284	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe
376	esxivoad-coab.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	376	esxivoad-coab.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 376	4964	2b1aebab5992f084e10ed9fbacaac61bea0ff101fc949e428c8fb762afbcbdfc.exe	85
PID 4964 wrote to memory of 376	4964	2b1aebab5992f084e10ed9fbacaac61bea0ff101fc949e428c8fb762afbcbdfc.exe	85
PID 4964 wrote to memory of 376	4964	2b1aebab5992f084e10ed9fbacaac61bea0ff101fc949e428c8fb762afbcbdfc.exe	85
PID 376 wrote to memory of 4284	376	esxivoad-coab.exe	86
PID 376 wrote to memory of 4284	376	esxivoad-coab.exe	86
PID 376 wrote to memory of 4284	376	esxivoad-coab.exe	86
PID 376 wrote to memory of 620	376	esxivoad-coab.exe	5
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55
PID 376 wrote to memory of 3380	376	esxivoad-coab.exe	55

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:620

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3380
- C:\Users\Admin\AppData\Local\Temp\2b1aebab5992f084e10ed9fbacaac61bea0ff101fc949e428c8fb762afbcbdfc.exe
  "C:\Users\Admin\AppData\Local\Temp\2b1aebab5992f084e10ed9fbacaac61bea0ff101fc949e428c8fb762afbcbdfc.exe"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4964
- - C:\Windows\SysWOW64\esxivoad-coab.exe
    "C:\Windows\SysWOW64\esxivoad-coab.exe"
    3⤵
    - Windows security bypass
    - Modifies Installed Components in the registry
    - Sets file execution options in registry
    - Executes dropped EXE
    - Windows security modification
    - Modifies WinLogon
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:376
  - - C:\Windows\SysWOW64\esxivoad-coab.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:4284

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\claheap.exe

Filesize
73KB

MD5
869ca41dc372d7a2c155f59c91355ba9

SHA1
69be9a297ad87e948edd432db0d8cd1d5d45fcbe

SHA256
fa1f26c57e7be332d1d7203e5c2c97878075a842b53279ca05b376ad4502d734

SHA512
50c04b0257af85279579708ccd2c7313be654dda681053b4c3c810d941d5cf526bc940c40e28078b7f5570bf8bfd1e7a2a97dc1e183a2679d70796706e73782a

Download Submit
C:\Windows\SysWOW64\ecximit.dll

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

Download Submit
C:\Windows\SysWOW64\esxivoad-coab.exe

Filesize
70KB

MD5
28b026f861ccf9f6516fe149a5aeef25

SHA1
ef97a03006bc5f3b0913d993428b19d83e86a941

SHA256
bc5ce4eb6b1fe61b6de418654a3d5c019103cb04aeb531ccb2d89183d8f86707

SHA512
b57aae6d2cf71dba091ece64b427dd338e10cd1127af504e84adf02e5f6871baf7c99e13faf3bd5b67faf001c7314f31b4e9a68269a5b84db07b3f54a7817603

Download Submit
C:\Windows\SysWOW64\tseanap-opeas.exe

Filesize
72KB

MD5
30d5b0323cc2d8b2993c0eee679fd545

SHA1
7a1efcf4f553b352268a2a595a8e0e91398bb68b

SHA256
a5001831e9b4db4794a0986b3861bf23be35fc5c02d829d3b7c0e05e3634a87b

SHA512
cbec13dba965eee08efd3e93c140c5c84fc80ead5aabdad4fcf5c43893196cf4f352b085840f79b2d74d6ccf5e15ebb458ffc69680c99347bdb541c77fa30842

Download Submit
memory/376-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4284-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4964-3-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download