2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c

Analysis

max time kernel
160s
max time network
74s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
24-11-2022 06:21

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General

Target

2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c.exe
Size

154KB
MD5

b6bb71aac834e6180444b7dffdc4ed78
SHA1

26da4827b7ef35290e61f976f141df0fa353af44
SHA256

2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c
SHA512

c15b0343545e0f0be76aa195a6fdb8f8f00909ab17a82c1f7dfcddc6c92920d93aa94cf31ab80db406b3ffedcf5add92dc3c9ad23117f9f7ffe7709cf4fed20f
SSDEEP

3072:O+XRhT9MnD39XkcYTaovAWDCQHpzhKEEt66PzBc8QdIRWB4:jRhT9akwovhzHpzFEt66PdcCv

Score

8^/10

aspackv2 persistence upx

Malware Config

Signatures

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x000b0000000122f6-57.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
1984	taskmgrnt.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000b0000000122f6-57.dat	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\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	taskmgrnt.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Service Registry NT Save = "\"c:\\windows\\taskmgrnt.exe\""	taskmgrnt.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	\??\c:\windows\taskmgrnt.exe	2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c.exe
File opened for modification	\??\c:\windows\taskmgrnt.exe	2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c.exe
File created	C:\Windows\rumlog.dat	taskmgrnt.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1416	2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c.exe
1984	taskmgrnt.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1416 wrote to memory of 1984	1416	2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c.exe	28
PID 1416 wrote to memory of 1984	1416	2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c.exe	28
PID 1416 wrote to memory of 1984	1416	2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c.exe	28
PID 1416 wrote to memory of 1984	1416	2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c.exe	28

C:\Users\Admin\AppData\Local\Temp\2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c.exe
"C:\Users\Admin\AppData\Local\Temp\2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1416
- \??\c:\windows\taskmgrnt.exe
  c:\windows\taskmgrnt.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:1984

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

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Downloads

C:\Windows\taskmgrnt.exe

Filesize
154KB

MD5
b6bb71aac834e6180444b7dffdc4ed78

SHA1
26da4827b7ef35290e61f976f141df0fa353af44

SHA256
2683721cda413b88649a8233aa5fbaa7e7c8bdc431b9d6bf50c755e8609ed48c

SHA512
c15b0343545e0f0be76aa195a6fdb8f8f00909ab17a82c1f7dfcddc6c92920d93aa94cf31ab80db406b3ffedcf5add92dc3c9ad23117f9f7ffe7709cf4fed20f

Download Submit
memory/1984-56-0x0000000000000000-mapping.dmp

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