38b9b8ce46960c89911829a3d09c9fa2f61fd8a9a634f4293cc625dcf65803b3

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
29-12-2023 18:40

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General

Target

00c3fda4ff09940ca177d13c0bb3f187.exe
Size

422KB
MD5

00c3fda4ff09940ca177d13c0bb3f187
SHA1

eb366e746c352d9b55661f46a57d44990162b808
SHA256

38b9b8ce46960c89911829a3d09c9fa2f61fd8a9a634f4293cc625dcf65803b3
SHA512

7eb0f82ed64e1c5071b276cf478754f9163ab70d45eb7f1888175de2db701e8a6378fb661440d0212137302fa8059d2a40db019b28ac196a2bace19898984faf
SSDEEP

6144:3/2aLWp4E0ETZY1T23Eu0i67n4+f74PEAh2g/JS8A77iiYce47jstv6DJg:3/2MWZZJUpi64i4PT5Ipnre4soDO

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\ProgramData\\pA21800GcPlJ21800\\pA21800GcPlJ21800.exe"	00c3fda4ff09940ca177d13c0bb3f187.exe

Deletes itself 1 IoCs

pid	Process
268	pA21800GcPlJ21800.exe

Executes dropped EXE 1 IoCs

pid	Process
268	pA21800GcPlJ21800.exe

Loads dropped DLL 2 IoCs

pid	Process
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2372-1-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral1/memory/2372-10-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral1/memory/2372-30-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral1/memory/268-31-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral1/memory/268-38-0x0000000000400000-0x00000000004D2000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\pA21800GcPlJ21800 = "C:\\ProgramData\\pA21800GcPlJ21800\\pA21800GcPlJ21800.exe"	pA21800GcPlJ21800.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe
2372	00c3fda4ff09940ca177d13c0bb3f187.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2372	00c3fda4ff09940ca177d13c0bb3f187.exe
Token: SeDebugPrivilege	268	pA21800GcPlJ21800.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 268	2372	00c3fda4ff09940ca177d13c0bb3f187.exe	32
PID 2372 wrote to memory of 268	2372	00c3fda4ff09940ca177d13c0bb3f187.exe	32
PID 2372 wrote to memory of 268	2372	00c3fda4ff09940ca177d13c0bb3f187.exe	32
PID 2372 wrote to memory of 268	2372	00c3fda4ff09940ca177d13c0bb3f187.exe	32

C:\Users\Admin\AppData\Local\Temp\00c3fda4ff09940ca177d13c0bb3f187.exe
"C:\Users\Admin\AppData\Local\Temp\00c3fda4ff09940ca177d13c0bb3f187.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2372
- C:\ProgramData\pA21800GcPlJ21800\pA21800GcPlJ21800.exe
  "C:\ProgramData\pA21800GcPlJ21800\pA21800GcPlJ21800.exe" "C:\Users\Admin\AppData\Local\Temp\00c3fda4ff09940ca177d13c0bb3f187.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  PID:268

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

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\pA21800GcPlJ21800\pA21800GcPlJ21800

Filesize
208B

MD5
ae6ecefaca9a2fb0bfd0cd2e8e5019cd

SHA1
2402793d5a50900cdaef9dbe22c09c4dfdf03fdb

SHA256
081af07fddfb42c7feab323edd9be88ee64c90975f490691b149e7e742fb8972

SHA512
7c11edb01d36bd5f1f051e32ee43339837e9fcd9eba00bb5a318d8e894a0d12106bfc0141ae34c5365baa5fe6e17eaf80dee553f6aa7805a9999d853c2610fe9

Download Submit
C:\ProgramData\pA21800GcPlJ21800\pA21800GcPlJ21800.exe

Filesize
422KB

MD5
f41d16e1fc735ce63cd4d37e5088d5ab

SHA1
fcee49f9ea148f3f4befbecec5b1f121b8beaf3c

SHA256
bbbd4b9c81893443e42b43cb26dbae537ad7158a8b3e11bc693d4fb5fca53b51

SHA512
cb73d4440df250f61d2b3e0e4471e556e6c4a5d49e79c6259cc266271613b1ebcae488bb4ce3d8eb5822b61826e042057de72273ffd213da6614933809894321

Download Submit
memory/268-31-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/268-38-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2372-0-0x0000000000300000-0x0000000000303000-memory.dmp

Filesize
12KB

Download
memory/2372-1-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2372-10-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2372-30-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download