99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36

Analysis

max time kernel
79s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20-06-2024 00:52

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General

Target

99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe
Size

92KB
MD5

aa0309f312fabff45c637ea7b15a6746
SHA1

49dceca4afbc66a45168859737c6cef2b7712fa9
SHA256

99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36
SHA512

5a881f85eca17d82345281069a20c52df4493da5ce7c7a6642c3332c173054dbacbc58533dc96053e01aa47316685d7fd17dc3f75691cf842893db2ea04b1283
SSDEEP

1536:R7PvnKhWQtC3Izj6TrlDa2z6Ewd0zvPTQw9LBZRQ8V3zhb:hPvKztiIzj6xtDLBZRQ8Vj5

Score

9^/10

persistence

Malware Config

Signatures

Detects executables packed with eXPressor 2 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233f2-3.dat	INDICATOR_EXE_Packed_eXPressor
behavioral2/memory/3572-6-0x0000000013150000-0x0000000013167000-memory.dmp	INDICATOR_EXE_Packed_eXPressor

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{CFF8FD86-05DB-4990-92A9-0EE5FDFB7BFE}	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{CFF8FD86-05DB-4990-92A9-0EE5FDFB7BFE}\stubpath = "C:\\Windows\\system32\\WinHelp56.exe"	regedit.exe

Deletes itself 1 IoCs

pid	Process
4972	WinHelp56.exe

Executes dropped EXE 1 IoCs

pid	Process
4972	WinHelp56.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WinHelp56.exe	99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2144	3572	WerFault.exe	86
2952	3572	WerFault.exe	86

Runs .reg file with regedit 1 IoCs

pid	Process
4984	regedit.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4972	WinHelp56.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4852 wrote to memory of 4984	4852	99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe	82
PID 4852 wrote to memory of 4984	4852	99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe	82
PID 4852 wrote to memory of 4984	4852	99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe	82
PID 4852 wrote to memory of 4972	4852	99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe	83
PID 4852 wrote to memory of 4972	4852	99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe	83
PID 4852 wrote to memory of 4972	4852	99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe	83
PID 4972 wrote to memory of 3572	4972	WinHelp56.exe	86
PID 4972 wrote to memory of 3572	4972	WinHelp56.exe	86
PID 4972 wrote to memory of 3572	4972	WinHelp56.exe	86
PID 4972 wrote to memory of 3572	4972	WinHelp56.exe	86

C:\Users\Admin\AppData\Local\Temp\99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe
"C:\Users\Admin\AppData\Local\Temp\99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4852
- C:\Windows\SysWOW64\regedit.exe
  regedit.exe /s C:\Users\Admin\AppData\Local\Temp\240599656.reg
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Runs .reg file with regedit
  PID:4984
- C:\Windows\SysWOW64\WinHelp56.exe
  C:\Windows\system32\WinHelp56.exe kowdgjttgC:\Users\Admin\AppData\Local\Temp\99318921262d6b3856b953ee7f645045d1cea4003ac4f6668253b51c79d50e36.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4972
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\system32\svchost.exe
    3⤵
    PID:3572
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3572 -s 204
      4⤵
      Program crash
      PID:2144
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3572 -s 212
      4⤵
      Program crash
      PID:2952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3572 -ip 3572
1⤵
PID:2948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3572 -ip 3572
1⤵
PID:1904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\240599656.reg

Filesize
384B

MD5
d63838b6071d08e6598dfb131e0ea050

SHA1
74a2dd78aaa035d58949cecd8f2f665224253e83

SHA256
b752737dcdc3e98a7b58f78e842bdcc106d12f5cd1d2737e49b27931647d4143

SHA512
47c70259402790773839ac62734d9a9f87e6b0b4df62149eea755203779a7bed3215d7b35404a39ee828f364bfa039f3777c072d453720814e4a85a161c80866

Download Submit
C:\Windows\SysWOW64\WinHelp56.exe

Filesize
92KB

MD5
3c62111a25fad43d66cd579677dad260

SHA1
dde6a5e0b1829c66f93bd4d65283d18c43bc4a85

SHA256
2030e07444bcaa9b67463423c172eca819bad2aa8187dd8b865bfa8df3e16c5b

SHA512
291ad5a54fd4f3284a790da8c982570f9e2c7b565ec354cc33be968e34b0bd316cdc14b4a5e787314b26000ae1a0f5c5c2476193d2020c7f573f1434ebfd82f7

Download Submit
memory/3572-6-0x0000000013150000-0x0000000013167000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads