a4d5cfee6f67b3978ae4189923796e16787941a6383cce6ffe84ee98fb4e3367

General

Target
TestJector.exe
Size 8.9MB
Sample260910-2xy1psyzfv
SHA256 a4d5cfee6f67b3978ae4189923796e16787941a6383cce6ffe84ee98fb4e3367
MD5 0fc7e3696886db9de0eeeef7c72b31c7
SHA1 8e0af77dfd4e929321832eff6081b0e91dc29ee3
SHA512 9b5feb1f0fab9eb0b95012ac697cc65162cb890c1f346fb3f63258c0294cfad617f3f629e0239c8a52006fe723d0351eaf19bb1fc61a6d746b397b714979b53d
SSDEEP 98304:ooXo0yLLoWqviBowomtvjyVCuS9CE6sE/IH2y+7ZI8G6j06k9Ff:o8o0oLKviBvomtvj2yCE6sE/NTt86m
TLSH
T16596338AC73244B8CD2D54BF41EEE0E89726AD904B592BAB4F36B1474F6F5C290509B3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

defense_evasion execution persistence themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	TestJector.exe

Sets service image path in registry 3 TTPs 1 IoCs

This determines the executable launched when a service starts. It can be used to establish persistence.

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NalDrv\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\NalDrv.sys"	r3w8v.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	TestJector.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	TestJector.exe

Executes dropped EXE 1 IoCs

pid	Process
1224	r3w8v.exe

Loads dropped DLL 2 IoCs

pid	Process
1224	r3w8v.exe
1224	r3w8v.exe

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/2752-0-0x0000000140000000-0x00000001408EE000-memory.dmp	themida
behavioral2/memory/2752-1-0x0000000140000000-0x00000001408EE000-memory.dmp	themida
behavioral2/memory/2752-2-0x0000000140000000-0x00000001408EE000-memory.dmp	themida
behavioral2/memory/2752-15-0x0000000140000000-0x00000001408EE000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	TestJector.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2752	TestJector.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SoftwareDistribution\Download\r3w8v.sys	TestJector.exe
File created	C:\Windows\SoftwareDistribution\Download\r3w8v.exe	TestJector.exe
File created	C:\Windows\SoftwareDistribution\Download\drv64.dll	TestJector.exe

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5856	cmd.exe
1280	cmd.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
1224	r3w8v.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeSystemEnvironmentPrivilege	1224	r3w8v.exe
Token: SeDebugPrivilege	1224	r3w8v.exe
Token: SeLoadDriverPrivilege	1224	r3w8v.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2752 wrote to memory of 5856	2752	TestJector.exe	90
PID 5856 wrote to memory of 1224	5856	cmd.exe	91
PID 2752 wrote to memory of 1280	2752	TestJector.exe	92

C:\Users\Admin\AppData\Local\Temp\TestJector.exe
"C:\Users\Admin\AppData\Local\Temp\TestJector.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2752
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SoftwareDistribution\Download\r3w8v.exe -prv 0 -map C:\Windows\SoftwareDistribution\Download\r3w8v.sys
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:5856
- - C:\Windows\SoftwareDistribution\Download\r3w8v.exe
    C:\Windows\SoftwareDistribution\Download\r3w8v.exe -prv 0 -map C:\Windows\SoftwareDistribution\Download\r3w8v.sys
    3⤵
    - Sets service image path in registry
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: LoadsDriver
    - Suspicious use of AdjustPrivilegeToken
    PID:1224
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c CLS
  2⤵
  - Executes a command shell one-liner
  PID:1280

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Modify Registry

1

T1112

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

drv64.dll

Path C:\Windows\SoftwareDistribution\Download\drv64.dll
Size 866KB
SHA256 140d550913e5456cb0a704fdc7b18195ac4f869b8ff68fd7dfdae50950ef5fdf
MD5 54cb3ddea54aa8fe394ed2f4cf00981c
SHA1 9182a893e0805d19da30024a92cbf1e74dc94906
SHA512 4d4ae6c76738c2f41ac79e431a2123bd44beec2a30f2ec96617af0494517e9fceae52ba68e773f8ffc4cd6fb8493176bbbbfbe50c1426b35f7dd042245ea7b4e
SSDEEP 12288:dhE7/OAnfbSJrD6n/Im5hkK9W4Iyo4J4b4zD3PRNhhIaqcMuceZDHlBtkSpJo7wl:k7/NfaejRHIyZJdX3pNh+PcNRHtkI
TLSH
T11B15234C1B98B248F23B1A34C773ED52441AF9FE24A70F59F6BDC04F1C9A252950DAAD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

r3w8v.exe

Path C:\Windows\SoftwareDistribution\Download\r3w8v.exe
Size 455KB
SHA256 a4742647869fa98a434360873e55bcb19669e63492600559f4fd30348ab66b5b
MD5 aafb26e12518560038b05c7342f0bb65
SHA1 a1ca58df13366b82f48486fc802d433781f5303d
SHA512 3f58b0b49740045cd7960a3783d61f33bec75c9d56f82287bd87029f5d13a95d9f09ee4113acefcfd65b9a2ce92a34fb4ab43873c6d73deedba0b66dbcc9e33d
SSDEEP 6144:M5ctbyyNz4Uzo/IYNDfghuWzJXFNkcVz4idFxiEohqSNqcHClaqLXoYO0o92fk2:MANXo3dfghuWzJVNBVzpF1o7Nq8OyL0
TLSH
T191A49E16E7A414F9E5B3C135C8618A02F7B1BC5E07619B6F23A877651F33390AD2EB12
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

r3w8v.sys

Path C:\Windows\SoftwareDistribution\Download\r3w8v.sys
Size 9KB
SHA256 19066df50eb8b7c76d06552ccbd6248a6384a45a7f04500c6de4ab37149bac54
MD5 657c2a27e4038ae1041474fb901540fa
SHA1 a552b50361b1ae6ab24f3a8959168099208f54ac
SHA512 961464d3eda5e81d1b3fa916971ba6b67772f3a4d981963f23b1d8dab3109a20177997a64e11c2a75e046a307f7e7d441e798281b944be865bea2849fa08adc1
SSDEEP 96:4hJOF6xPm5VsRWeJauD5Pd5OPLwZee8o/RNfkSHWj7kxjEp+dbVnttzpI+:oOYPm5V0WMaulSMZKo/RRkYc/p+3zpb
TLSH
T1B112C790222958E3E36D507F85C30F9AB6ADF41507235EDF4575C12D0FA6EE9683B701
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2752-0-0x0000000140000000-0x00000001408EE000-memory.dmp

Download

memory/2752-1-0x0000000140000000-0x00000001408EE000-memory.dmp

Download

memory/2752-2-0x0000000140000000-0x00000001408EE000-memory.dmp

Download

memory/2752-15-0x0000000140000000-0x00000001408EE000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads