0a7bcf971bcd117c95c821e2196a044d8503a74ab69208811c4e681938f172f4

Analysis

max time kernel
142s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
06-10-2023 08:51

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General

Target

riverr.bat
Size

16KB
MD5

fccbe80eeebe5acce981cd2e9553b8ad
SHA1

ef268fa2005893965ce36e736fe209e762bd9d78
SHA256

0a7bcf971bcd117c95c821e2196a044d8503a74ab69208811c4e681938f172f4
SHA512

509012bddc34aa63240be346f49d463f964e94f445a7ff574b6dd833203bc90e4a6342b2375fdf8c23f1922de504b5afc3ec7f58e9f5d27d5266fe5a60f43080
SSDEEP

192:cPBo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9Bo9B4:v

Score

1^/10

Malware Config

Signatures

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1984	timeout.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
1780	tasklist.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4204	powershell.exe
4204	powershell.exe
4204	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4204	powershell.exe
Token: SeDebugPrivilege	1780	tasklist.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 3552 wrote to memory of 4104	3552	cmd.exe	83
PID 3552 wrote to memory of 4104	3552	cmd.exe	83
PID 3552 wrote to memory of 3676	3552	cmd.exe	84
PID 3552 wrote to memory of 3676	3552	cmd.exe	84
PID 3552 wrote to memory of 4124	3552	cmd.exe	85
PID 3552 wrote to memory of 4124	3552	cmd.exe	85
PID 3552 wrote to memory of 4928	3552	cmd.exe	86
PID 3552 wrote to memory of 4928	3552	cmd.exe	86
PID 3552 wrote to memory of 3548	3552	cmd.exe	87
PID 3552 wrote to memory of 3548	3552	cmd.exe	87
PID 3552 wrote to memory of 5032	3552	cmd.exe	88
PID 3552 wrote to memory of 5032	3552	cmd.exe	88
PID 3552 wrote to memory of 1120	3552	cmd.exe	89
PID 3552 wrote to memory of 1120	3552	cmd.exe	89
PID 3552 wrote to memory of 2896	3552	cmd.exe	90
PID 3552 wrote to memory of 2896	3552	cmd.exe	90
PID 3552 wrote to memory of 2012	3552	cmd.exe	91
PID 3552 wrote to memory of 2012	3552	cmd.exe	91
PID 3552 wrote to memory of 3036	3552	cmd.exe	92
PID 3552 wrote to memory of 3036	3552	cmd.exe	92
PID 3552 wrote to memory of 4832	3552	cmd.exe	93
PID 3552 wrote to memory of 4832	3552	cmd.exe	93
PID 3552 wrote to memory of 4252	3552	cmd.exe	94
PID 3552 wrote to memory of 4252	3552	cmd.exe	94
PID 3552 wrote to memory of 2628	3552	cmd.exe	95
PID 3552 wrote to memory of 2628	3552	cmd.exe	95
PID 3552 wrote to memory of 3484	3552	cmd.exe	96
PID 3552 wrote to memory of 3484	3552	cmd.exe	96
PID 3552 wrote to memory of 3348	3552	cmd.exe	97
PID 3552 wrote to memory of 3348	3552	cmd.exe	97
PID 3552 wrote to memory of 3968	3552	cmd.exe	98
PID 3552 wrote to memory of 3968	3552	cmd.exe	98
PID 3552 wrote to memory of 4204	3552	cmd.exe	111
PID 3552 wrote to memory of 4204	3552	cmd.exe	111
PID 3552 wrote to memory of 1984	3552	cmd.exe	113
PID 3552 wrote to memory of 1984	3552	cmd.exe	113
PID 3552 wrote to memory of 1780	3552	cmd.exe	116
PID 3552 wrote to memory of 1780	3552	cmd.exe	116
PID 3552 wrote to memory of 4104	3552	cmd.exe	117
PID 3552 wrote to memory of 4104	3552	cmd.exe	117
PID 3552 wrote to memory of 2336	3552	cmd.exe	118
PID 3552 wrote to memory of 2336	3552	cmd.exe	118

Views/modifies file attributes 1 TTPs 8 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3348	attrib.exe
4104	attrib.exe
4124	attrib.exe
3548	attrib.exe
1120	attrib.exe
2012	attrib.exe
4832	attrib.exe
2628	attrib.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\riverr.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3552
- C:\Windows\system32\attrib.exe
  attrib +h /s /d
  2⤵
  - Views/modifies file attributes
  PID:4104
- C:\Windows\system32\cipher.exe
  cipher /e /s /a
  2⤵
  PID:3676
- C:\Windows\system32\attrib.exe
  attrib +h /s /d
  2⤵
  - Views/modifies file attributes
  PID:4124
- C:\Windows\system32\cipher.exe
  cipher /e /s /a
  2⤵
  PID:4928
- C:\Windows\system32\attrib.exe
  attrib +h /s /d
  2⤵
  - Views/modifies file attributes
  PID:3548
- C:\Windows\system32\cipher.exe
  cipher /e /s /a
  2⤵
  PID:5032
- C:\Windows\system32\attrib.exe
  attrib +h /s /d
  2⤵
  - Views/modifies file attributes
  PID:1120
- C:\Windows\system32\cipher.exe
  cipher /e /s /a
  2⤵
  PID:2896
- C:\Windows\system32\attrib.exe
  attrib +h /s /d
  2⤵
  - Views/modifies file attributes
  PID:2012
- C:\Windows\system32\cipher.exe
  cipher /e /s /a
  2⤵
  PID:3036
- C:\Windows\system32\attrib.exe
  attrib +h /s /d
  2⤵
  - Views/modifies file attributes
  PID:4832
- C:\Windows\system32\cipher.exe
  cipher /e /s /a
  2⤵
  PID:4252
- C:\Windows\system32\attrib.exe
  attrib +h /s /d
  2⤵
  - Views/modifies file attributes
  PID:2628
- C:\Windows\system32\cipher.exe
  cipher /e /s /a
  2⤵
  PID:3484
- C:\Windows\system32\attrib.exe
  attrib +h /s /d
  2⤵
  - Views/modifies file attributes
  PID:3348
- C:\Windows\system32\cipher.exe
  cipher /e /s /a
  2⤵
  PID:3968
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -command "$wshell = New-Object -ComObject WScript.Shell; $wshell.Popup('Your files have been encrypted! To get them back, pay $300 to the following Bitcoin address: 3BKuiDHNSbdCdK8fHTUxCB4GRBiuKUrMzr', 0, 'ENCRYPTED', 16)"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4204
- C:\Windows\system32\timeout.exe
  timeout /t 3
  2⤵
  - Delays execution with timeout.exe
  PID:1984
- C:\Windows\system32\tasklist.exe
  tasklist
  2⤵
  - Enumerates processes with tasklist
  - Suspicious use of AdjustPrivilegeToken
  PID:1780
- C:\Windows\system32\find.exe
  find /i "Ransomware"
  2⤵
  PID:4104
- C:\Windows\system32\notepad.exe
  notepad "C:\Users\Admin\Downloads\do not close.txt"
  2⤵
  PID:2336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

Process Discovery

T1057

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tju1vrqx.e23.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\Downloads\do not close.txt

Filesize
132B

MD5
460791485d870c39dc5273ea2ddfc119

SHA1
a247fb46e29831ebea2c4984061a1c80ed67295f

SHA256
257ea28c54cdb0fea4cb56dd97067978cde53585872fe22eb6f152d20bff1251

SHA512
e64ef367731ba22232fb1112aeafc0f2098a05321098f481d45e6e10b74ff645ed644c8c511e5cfafcf16e0da9c91c2641ed5aa8f6fbb36a43445d013f0e3e52

Download Submit
memory/4204-2-0x000002396A390000-0x000002396A3B2000-memory.dmp

Filesize
136KB

Download
memory/4204-12-0x00007FFA58180000-0x00007FFA58C41000-memory.dmp

Filesize
10.8MB

Download
memory/4204-13-0x000002396A3E0000-0x000002396A3F0000-memory.dmp

Filesize
64KB

Download
memory/4204-14-0x000002396A3E0000-0x000002396A3F0000-memory.dmp

Filesize
64KB

Download
memory/4204-17-0x00007FFA58180000-0x00007FFA58C41000-memory.dmp

Filesize
10.8MB

Download