513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8

Analysis

max time kernel
150s
max time network
150s
platform
windows10_x64
resource
win10v20201028
submitted
07/04/2021, 02:24

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General

Target
513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
Size 2.7MB
Sample210407-3jldzd4fma
SHA256 513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8
MD5 cf528b119445c4d25a90e05bba8900c6
SHA1 26e10d0657fcfe9db93b183749cea4ddebcb6bdf
SHA512 a0f2928ecdc088b447dc29db63b2463563f14ffa76acdeea26f3bb651cb1d4a35b11a14ba6014b48fe6beefff676107e45d5f4358b8d72314df22259f1fb7492
MD5 SHA1 SHA512

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
896	notepads.exe
1844	notepads.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1844-37-0x0000000000700000-0x0000000000AE4000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\notepads = "C:\\Users\\Admin\\AppData\\Local\\notepads.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 896 set thread context of 1844	896	notepads.exe	82

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2400	1844	WerFault.exe	82

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
896	notepads.exe
896	notepads.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
Token: SeDebugPrivilege	896	notepads.exe
Token: SeRestorePrivilege	2400	WerFault.exe
Token: SeBackupPrivilege	2400	WerFault.exe
Token: SeDebugPrivilege	2400	WerFault.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 3088	4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe	77
PID 4692 wrote to memory of 3088	4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe	77
PID 4692 wrote to memory of 3088	4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe	77
PID 3088 wrote to memory of 628	3088	cmd.exe	79
PID 3088 wrote to memory of 628	3088	cmd.exe	79
PID 3088 wrote to memory of 628	3088	cmd.exe	79
PID 4692 wrote to memory of 896	4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe	81
PID 4692 wrote to memory of 896	4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe	81
PID 4692 wrote to memory of 896	4692	513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe	81
PID 896 wrote to memory of 1844	896	notepads.exe	82
PID 896 wrote to memory of 1844	896	notepads.exe	82
PID 896 wrote to memory of 1844	896	notepads.exe	82
PID 896 wrote to memory of 1844	896	notepads.exe	82
PID 896 wrote to memory of 1844	896	notepads.exe	82
PID 896 wrote to memory of 1844	896	notepads.exe	82
PID 896 wrote to memory of 1844	896	notepads.exe	82

C:\Users\Admin\AppData\Local\Temp\513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe
"C:\Users\Admin\AppData\Local\Temp\513f0b460034cb449747935176b8b8669b46c8849a1617f047dcbd5a22d9fdd8.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "notepads" /t REG_SZ /d "C:\Users\Admin\AppData\Local\notepads.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3088
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "notepads" /t REG_SZ /d "C:\Users\Admin\AppData\Local\notepads.exe"
    3⤵
    - Adds Run key to start application
    PID:628
- C:\Users\Admin\AppData\Local\notepads.exe
  "C:\Users\Admin\AppData\Local\notepads.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:896
- - C:\Users\Admin\AppData\Local\notepads.exe
    "C:\Users\Admin\AppData\Local\notepads.exe"
    3⤵
    - Executes dropped EXE
    PID:1844
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1844 -s 196
      4⤵
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2400

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/896-26-0x00000000059E0000-0x00000000059E1000-memory.dmp

Download

memory/896-18-0x0000000073430000-0x0000000073B1E000-memory.dmp

Download

memory/896-30-0x0000000006EB0000-0x0000000006EB1000-memory.dmp

Download

memory/896-29-0x00000000048D0000-0x00000000048DB000-memory.dmp

Download

memory/896-28-0x00000000059E1000-0x00000000059E2000-memory.dmp

Download

memory/1844-37-0x0000000000700000-0x0000000000AE4000-memory.dmp

Download

memory/2400-34-0x0000000004A30000-0x0000000004A31000-memory.dmp

Download

memory/4692-5-0x0000000005770000-0x0000000005771000-memory.dmp

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memory/4692-2-0x0000000073430000-0x0000000073B1E000-memory.dmp

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memory/4692-6-0x0000000005E40000-0x0000000005E41000-memory.dmp

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memory/4692-7-0x0000000005940000-0x0000000005941000-memory.dmp

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memory/4692-8-0x00000000059E0000-0x00000000059E1000-memory.dmp

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memory/4692-3-0x0000000000CB0000-0x0000000000CB1000-memory.dmp

Download

memory/4692-12-0x0000000005901000-0x0000000005902000-memory.dmp

Download

memory/4692-11-0x00000000078B0000-0x00000000078DF000-memory.dmp

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memory/4692-9-0x0000000005900000-0x0000000005901000-memory.dmp

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