parallax | b51e81e44593c2c42ae412b692c46be3c6b1e4ac46c951e708618da5919403d3

General

Target

b51e81e44593c2c42ae412b692c46be3c6b1e4ac46c951e708618da5919403d3.exe
Size

1016KB
MD5

cf04ef7185ddf7d7eb50cdda20987b52
SHA1

300e4d06ce151141c8b858c2a752be1fa0d53ad8
SHA256

b51e81e44593c2c42ae412b692c46be3c6b1e4ac46c951e708618da5919403d3
SHA512

e596a1ce2a0d24681289f7e84ed24fe70a768bdb160eda5c4c39be3dd061d1cdf0309792aef03c2944e51fc630a3f2f7aa693c1e984aef69762f4bb3d77e98e7

Score

10^/10

parallax persistence rat

Malware Config

Signatures

ParallaxRat
ParallaxRat is a multipurpose RAT written in MASM.
rat parallax

ParallaxRat payload 2 IoCs

Detects payload of Parallax Rat, a small portable Rat usually digitally signed with a Sectigo certificate.

resource	yara_rule
behavioral1/memory/1056-56-0x0000000000400000-0x0000000000507000-memory.dmp	parallax_rat
behavioral1/memory/580-59-0x0000000000400000-0x0000000000507000-memory.dmp	parallax_rat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\ = "C:\\Users\\Admin\\AppData\\Roaming\\System32\\csrss.exe.exe"	csrss.exe.exe

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

System Information Discovery
T1082

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1056	b51e81e44593c2c42ae412b692c46be3c6b1e4ac46c951e708618da5919403d3.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 580	1056	b51e81e44593c2c42ae412b692c46be3c6b1e4ac46c951e708618da5919403d3.exe	27
PID 1056 wrote to memory of 580	1056	b51e81e44593c2c42ae412b692c46be3c6b1e4ac46c951e708618da5919403d3.exe	27
PID 1056 wrote to memory of 580	1056	b51e81e44593c2c42ae412b692c46be3c6b1e4ac46c951e708618da5919403d3.exe	27
PID 1056 wrote to memory of 580	1056	b51e81e44593c2c42ae412b692c46be3c6b1e4ac46c951e708618da5919403d3.exe	27

C:\Users\Admin\AppData\Local\Temp\b51e81e44593c2c42ae412b692c46be3c6b1e4ac46c951e708618da5919403d3.exe
"C:\Users\Admin\AppData\Local\Temp\b51e81e44593c2c42ae412b692c46be3c6b1e4ac46c951e708618da5919403d3.exe"
1⤵
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Users\Admin\AppData\Roaming\System32\csrss.exe.exe
  "C:\Users\Admin\AppData\Roaming\System32\csrss.exe.exe"
  2⤵
  - Adds Run key to start application
  PID:580

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/580-65-0x0000000000412000-0x0000000000413000-memory.dmp

Filesize
4KB

Download
memory/580-70-0x0000000000418000-0x0000000000419000-memory.dmp

Filesize
4KB

Download
memory/580-66-0x0000000000413000-0x0000000000414000-memory.dmp

Filesize
4KB

Download
memory/580-67-0x000000000041D000-0x000000000041E000-memory.dmp

Filesize
4KB

Download
memory/580-62-0x0000000000416000-0x0000000000417000-memory.dmp

Filesize
4KB

Download
memory/580-61-0x0000000000420000-0x0000000000421000-memory.dmp

Filesize
4KB

Download
memory/580-63-0x0000000000419000-0x000000000041A000-memory.dmp

Filesize
4KB

Download
memory/580-64-0x000000000041C000-0x000000000041D000-memory.dmp

Filesize
4KB

Download
memory/580-74-0x0000000000421000-0x0000000000422000-memory.dmp

Filesize
4KB

Download
memory/580-73-0x000000000041F000-0x0000000000420000-memory.dmp

Filesize
4KB

Download
memory/580-59-0x0000000000400000-0x0000000000507000-memory.dmp

Filesize
1.0MB

Download
memory/580-68-0x0000000000414000-0x0000000000415000-memory.dmp

Filesize
4KB

Download
memory/580-69-0x0000000000417000-0x0000000000418000-memory.dmp

Filesize
4KB

Download
memory/580-71-0x000000000041A000-0x000000000041B000-memory.dmp

Filesize
4KB

Download
memory/580-72-0x000000000041B000-0x000000000041C000-memory.dmp

Filesize
4KB

Download
memory/1056-55-0x00000000003B0000-0x00000000003C8000-memory.dmp

Filesize
96KB

Download
memory/1056-56-0x0000000000400000-0x0000000000507000-memory.dmp

Filesize
1.0MB

Download
memory/1056-54-0x0000000075F71000-0x0000000075F73000-memory.dmp

Filesize
8KB

Download

Analysis

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