b50cb54a9ab60b6f15fa1dc80839aa5b7ed29df905302b0e512e6636c78d44b9

General

Target

63652f9292efd244acba57450c992226.exe
Size

390KB
MD5

63652f9292efd244acba57450c992226
SHA1

1741cd019a07a0d3c2320cddabf9f0d647b49ab5
SHA256

b50cb54a9ab60b6f15fa1dc80839aa5b7ed29df905302b0e512e6636c78d44b9
SHA512

258e3f794a50d251b5050b447f75db1559a64bae9f5fe8b9fa35ed0b15e99fd459263d7c46b70d68f7b53bcbd38998e7d39086d43c4cfe559d051e5854c335e2
SSDEEP

6144:9yy/QuYdv1NYBwKRlWuBX5gOuCMZaxaw6hQn8ZlMKHBEbXNLwP1NVO0C:9ySYCzJgOeZQCsYrEDRYjO0C

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3844	cssrs.exe

UPX packed file 15 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4184-0-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/files/0x000700000002322a-4.dat	upx
behavioral2/memory/3844-6-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/4184-8-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/4184-9-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/3844-10-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/3844-11-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/3844-12-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/3844-14-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/3844-16-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/3844-17-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/3844-20-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/3844-21-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/3844-23-0x0000000000400000-0x00000000004D2000-memory.dmp	upx
behavioral2/memory/3844-63-0x0000000000400000-0x00000000004D2000-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-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaUpdatecda9 = "c:\\systeam\\reaction\\cssrs.exe"	reg.exe

Kills process with taskkill 2 IoCs

evasion

pid	Process
3560	taskkill.exe
3272	taskkill.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3272	taskkill.exe
Token: SeDebugPrivilege	3560	taskkill.exe
Token: SeManageVolumePrivilege	1328	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4184 wrote to memory of 3272	4184	63652f9292efd244acba57450c992226.exe	69
PID 4184 wrote to memory of 3272	4184	63652f9292efd244acba57450c992226.exe	69
PID 4184 wrote to memory of 3272	4184	63652f9292efd244acba57450c992226.exe	69
PID 4184 wrote to memory of 3560	4184	63652f9292efd244acba57450c992226.exe	68
PID 4184 wrote to memory of 3560	4184	63652f9292efd244acba57450c992226.exe	68
PID 4184 wrote to memory of 3560	4184	63652f9292efd244acba57450c992226.exe	68
PID 4184 wrote to memory of 3844	4184	63652f9292efd244acba57450c992226.exe	100
PID 4184 wrote to memory of 3844	4184	63652f9292efd244acba57450c992226.exe	100
PID 4184 wrote to memory of 3844	4184	63652f9292efd244acba57450c992226.exe	100
PID 3844 wrote to memory of 3644	3844	cssrs.exe	101
PID 3844 wrote to memory of 3644	3844	cssrs.exe	101
PID 3844 wrote to memory of 3644	3844	cssrs.exe	101

C:\Users\Admin\AppData\Local\Temp\63652f9292efd244acba57450c992226.exe
"C:\Users\Admin\AppData\Local\Temp\63652f9292efd244acba57450c992226.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4184
- C:\Windows\SysWOW64\taskkill.exe
  taskkill -f /im cssrs.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:3560
- C:\Windows\SysWOW64\taskkill.exe
  taskkill -f /im cssrs.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:3272
- \??\c:\systeam\reaction\cssrs.exe
  c:\systeam\reaction\cssrs.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3844
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v JavaUpdatecda9 /d "c:\systeam\reaction\cssrs.exe" /f
    3⤵
    - Adds Run key to start application
    PID:3644

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:388

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1328

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\systeam\reaction\cssrs.exe

Filesize
390KB

MD5
63652f9292efd244acba57450c992226

SHA1
1741cd019a07a0d3c2320cddabf9f0d647b49ab5

SHA256
b50cb54a9ab60b6f15fa1dc80839aa5b7ed29df905302b0e512e6636c78d44b9

SHA512
258e3f794a50d251b5050b447f75db1559a64bae9f5fe8b9fa35ed0b15e99fd459263d7c46b70d68f7b53bcbd38998e7d39086d43c4cfe559d051e5854c335e2

Download Submit
memory/1328-25-0x0000022E02640000-0x0000022E02650000-memory.dmp

Filesize
64KB

Download
memory/1328-61-0x0000022E0AB90000-0x0000022E0AB91000-memory.dmp

Filesize
4KB

Download
memory/1328-60-0x0000022E0AA80000-0x0000022E0AA81000-memory.dmp

Filesize
4KB

Download
memory/1328-59-0x0000022E0AA80000-0x0000022E0AA81000-memory.dmp

Filesize
4KB

Download
memory/1328-57-0x0000022E0AA50000-0x0000022E0AA51000-memory.dmp

Filesize
4KB

Download
memory/1328-41-0x0000022E02740000-0x0000022E02750000-memory.dmp

Filesize
64KB

Download
memory/3844-16-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/3844-7-0x0000000002100000-0x0000000002101000-memory.dmp

Filesize
4KB

Download
memory/3844-12-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/3844-13-0x0000000002100000-0x0000000002101000-memory.dmp

Filesize
4KB

Download
memory/3844-14-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/3844-63-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/3844-17-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/3844-20-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/3844-21-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/3844-23-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/3844-10-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/3844-6-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/3844-11-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/4184-8-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/4184-9-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/4184-1-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/4184-0-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads