c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d

Analysis

max time kernel
171s
max time network
192s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2022, 07:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe
Size

386KB
MD5

8b7a4c06d8fda99099e8a11c8273b8e9
SHA1

9f60b2cee08ff473a9d8e50838857e0ee09be8ea
SHA256

c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d
SHA512

3443dd21fc81fc30c92ec3240a8f0e09531774f7c0a80bf1b2e5f698cd783e509accfdaa64972f46c52ae57dc0c6417f1117220d240308c276b07c70d50831fe
SSDEEP

12288:y2SaqAob212fQj5dmKVxp3pl2nT3gpC5+vkhpoHh:y2SMoRIVdmkp3pIgpKp4

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4496	cssrs.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2900-132-0x0000000000400000-0x00000000004D1000-memory.dmp	upx
behavioral2/memory/2900-134-0x0000000000400000-0x00000000004D1000-memory.dmp	upx
behavioral2/files/0x0006000000022e08-139.dat	upx
behavioral2/files/0x0006000000022e08-138.dat	upx
behavioral2/memory/4496-140-0x0000000000400000-0x00000000004D1000-memory.dmp	upx
behavioral2/memory/4496-141-0x0000000000400000-0x00000000004D1000-memory.dmp	upx
behavioral2/memory/2900-142-0x0000000000400000-0x00000000004D1000-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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaUpdatecda9 = "c:\\programfiles\\reaction\\cssrs.exe"	reg.exe

Kills process with taskkill 2 IoCs

evasion

pid	Process
1824	taskkill.exe
2184	taskkill.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	taskkill.exe
Token: SeDebugPrivilege	1824	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2900 wrote to memory of 4252	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	81
PID 2900 wrote to memory of 4252	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	81
PID 2900 wrote to memory of 4252	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	81
PID 2900 wrote to memory of 2184	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	83
PID 2900 wrote to memory of 2184	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	83
PID 2900 wrote to memory of 2184	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	83
PID 2900 wrote to memory of 1824	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	84
PID 2900 wrote to memory of 1824	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	84
PID 2900 wrote to memory of 1824	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	84
PID 2900 wrote to memory of 4496	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	87
PID 2900 wrote to memory of 4496	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	87
PID 2900 wrote to memory of 4496	2900	c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe	87

C:\Users\Admin\AppData\Local\Temp\c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe
"C:\Users\Admin\AppData\Local\Temp\c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Windows\SysWOW64\reg.exe
  reg add "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v JavaUpdatecda9 /d "c:\programfiles\reaction\cssrs.exe" /f
  2⤵
  - Adds Run key to start application
  PID:4252
- C:\Windows\SysWOW64\taskkill.exe
  taskkill -f /im cssrs.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:2184
- C:\Windows\SysWOW64\taskkill.exe
  taskkill -f /im cssrs.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:1824
- C:\programfiles\reaction\cssrs.exe
  C:\programfiles\reaction\cssrs.exe
  2⤵
  - Executes dropped EXE
  PID:4496

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\programfiles\reaction\cssrs.exe

Filesize
386KB

MD5
8b7a4c06d8fda99099e8a11c8273b8e9

SHA1
9f60b2cee08ff473a9d8e50838857e0ee09be8ea

SHA256
c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d

SHA512
3443dd21fc81fc30c92ec3240a8f0e09531774f7c0a80bf1b2e5f698cd783e509accfdaa64972f46c52ae57dc0c6417f1117220d240308c276b07c70d50831fe

Download Submit
C:\programfiles\reaction\cssrs.exe

Filesize
386KB

MD5
8b7a4c06d8fda99099e8a11c8273b8e9

SHA1
9f60b2cee08ff473a9d8e50838857e0ee09be8ea

SHA256
c5495c5abe79e618ad6b6a7b18436b6a484fbaa6824e1d3109c7d1dbb6b4702d

SHA512
3443dd21fc81fc30c92ec3240a8f0e09531774f7c0a80bf1b2e5f698cd783e509accfdaa64972f46c52ae57dc0c6417f1117220d240308c276b07c70d50831fe

Download Submit
memory/2900-132-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2900-134-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2900-142-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/4496-140-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/4496-141-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download