oski | 2ead76cdf40f1400d4f9efa5c76c72fbe4dab4cef0c73d694836e9480d415fa1

Analysis

max time kernel
140s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
21/12/2023, 23:12

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General

Target
21a256e5887cb8472f38a391fa9f3f07.ps1
Size 485KB
Sample231221-27bm6abeg7
SHA256 2ead76cdf40f1400d4f9efa5c76c72fbe4dab4cef0c73d694836e9480d415fa1
MD5 21a256e5887cb8472f38a391fa9f3f07
SHA1 e00e22ccefc0af52fbbae04a753d504a2da76dc7
SHA512 293ae268a3690a022b609785a67639087e983ac13006ea661ad911f921766b83df6ee14e18040d9506e398a143652edd00b453c975b9a16714d061e4a7bcdaa0
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64Nigu:q3Cu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

/103.114.107.28/l36/

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1408 set thread context of 4984	1408	powershell.exe	88

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4660	4984	WerFault.exe	88

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1408	powershell.exe
1408	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1408	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1408 wrote to memory of 4984	1408	powershell.exe	88
PID 1408 wrote to memory of 4984	1408	powershell.exe	88
PID 1408 wrote to memory of 4984	1408	powershell.exe	88
PID 1408 wrote to memory of 4984	1408	powershell.exe	88
PID 1408 wrote to memory of 4984	1408	powershell.exe	88
PID 1408 wrote to memory of 4984	1408	powershell.exe	88
PID 1408 wrote to memory of 4984	1408	powershell.exe	88
PID 1408 wrote to memory of 4984	1408	powershell.exe	88
PID 1408 wrote to memory of 4984	1408	powershell.exe	88

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\21a256e5887cb8472f38a391fa9f3f07.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1408
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:4984
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 1112
    3⤵
    - Program crash
    PID:4660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4984 -ip 4984
1⤵
PID:2200

Network

MITRE ATT&CK Matrix

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Downloads

__PSScriptPolicyTest_af2q5rzs.xik.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_af2q5rzs.xik.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

memory/1408-1-0x0000012C31150000-0x0000012C31172000-memory.dmp

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memory/1408-10-0x00007FFE0D880000-0x00007FFE0E341000-memory.dmp

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memory/1408-11-0x0000012C187D0000-0x0000012C187E0000-memory.dmp

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memory/1408-12-0x0000012C187D0000-0x0000012C187E0000-memory.dmp

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memory/1408-13-0x0000012C312C0000-0x0000012C312D2000-memory.dmp

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memory/1408-17-0x00007FFE0D880000-0x00007FFE0E341000-memory.dmp

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memory/4984-14-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4984-18-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4984-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4984-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4984-23-0x0000000000400000-0x0000000000438000-memory.dmp

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