1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245

Analysis

max time kernel
151s
max time network
94s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 17:05

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General

Target

1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe
Size

144KB
MD5

39b3cdbe592fbfce5b7bca5eb66f009a
SHA1

5445a005346ec9b514c29371cbd18eed660abf14
SHA256

1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245
SHA512

0b0f00a6a5bd9defae9b3bf8882a5563f9411b2ac6ac5f62adda89a7d68613be17efea091d6e8bc64e69b1e6e950b20e4e3e43dcc28d8c84b1959d29310b0394
SSDEEP

3072:quKay2UNgieWnK80r5K8rbTx81JI/21AiXslNko4:quKawsvEKb181DAu

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1064	msa.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1940-55-0x0000000000400000-0x0000000000479000-memory.dmp	upx
behavioral1/memory/1064-60-0x0000000000400000-0x0000000000479000-memory.dmp	upx
behavioral1/memory/1940-62-0x0000000000400000-0x0000000000479000-memory.dmp	upx
behavioral1/memory/1940-63-0x0000000000400000-0x0000000000479000-memory.dmp	upx
behavioral1/memory/1064-64-0x0000000000400000-0x0000000000479000-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
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\NordBull = "C:\\Windows\\msa.exe"	msa.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run	msa.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\{7B02EF0B-A410-4938-8480-9BA26420A627}.job	1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe
File opened for modification	C:\Windows\Tasks\{7B02EF0B-A410-4938-8480-9BA26420A627}.job	1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe
File created	C:\Windows\msa.exe	1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe
File opened for modification	C:\Windows\msa.exe	1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\International	msa.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1940	1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe
1064	msa.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1940	1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe
1064	msa.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 1064	1940	1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe	28
PID 1940 wrote to memory of 1064	1940	1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe	28
PID 1940 wrote to memory of 1064	1940	1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe	28
PID 1940 wrote to memory of 1064	1940	1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe	28

C:\Users\Admin\AppData\Local\Temp\1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe
"C:\Users\Admin\AppData\Local\Temp\1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Windows\msa.exe
  C:\Windows\msa.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  PID:1064

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\Tasks\{7B02EF0B-A410-4938-8480-9BA26420A627}.job

Filesize
408B

MD5
dbf6e2ee7c18bc16513140e4052c0795

SHA1
879f3553346ac6d7526727b4e8d666694ed1ee68

SHA256
8941661bc2bbb7b830574df81cdfbae1111e658dc8b715fae9eb1d10a091ea0f

SHA512
b46869314670188f731f4b70f496e644e37afea7227c5365e885d47c97ecf62f743a29fc96484c63e8ca9b241f8bf83396f207c43080843cf66baf805906fcfb

Download Submit
C:\Windows\msa.exe

Filesize
144KB

MD5
39b3cdbe592fbfce5b7bca5eb66f009a

SHA1
5445a005346ec9b514c29371cbd18eed660abf14

SHA256
1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245

SHA512
0b0f00a6a5bd9defae9b3bf8882a5563f9411b2ac6ac5f62adda89a7d68613be17efea091d6e8bc64e69b1e6e950b20e4e3e43dcc28d8c84b1959d29310b0394

Download Submit
C:\Windows\msa.exe

Filesize
144KB

MD5
39b3cdbe592fbfce5b7bca5eb66f009a

SHA1
5445a005346ec9b514c29371cbd18eed660abf14

SHA256
1ff2fde994cd9791215a0c39e9611caf7b8ec449d2d82b6802ea1b08dd7d6245

SHA512
0b0f00a6a5bd9defae9b3bf8882a5563f9411b2ac6ac5f62adda89a7d68613be17efea091d6e8bc64e69b1e6e950b20e4e3e43dcc28d8c84b1959d29310b0394

Download Submit
memory/1064-60-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1064-64-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1940-54-0x00000000753C1000-0x00000000753C3000-memory.dmp

Filesize
8KB

Download
memory/1940-55-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1940-62-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1940-63-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download