352cb724a0c2efef4758957d4c68809f0733de4a1a430c4c4b3b0efbbc6aa168

Analysis

max time kernel
150s
max time network
126s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
18/10/2026, 22:25

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General

Target
jaffacakes118_Trojan.Win32.Chifrax.cmb.exe
Size 265KB
Sample261018-2b18yahz2j
SHA256 352cb724a0c2efef4758957d4c68809f0733de4a1a430c4c4b3b0efbbc6aa168
MD5 3f0656b48e027707516876368d345ba6
SHA1 435dd27d06c80e0e4d38dcfc1f7d8f682eb3cbd8
SHA512 57046e84f76a59f0fb1fa88a988646df83fdb579bff1bcf29af4ddd9119e5eaf85339fca38a8c7634aaf21b1e4a2c4fd93bb5cafc5f58e0bc1e9020672372434
SSDEEP 6144:FcWMJJhqryYP/daqtl2G/447KQBmJm6yGjmLgIc20/T:FczJJhqrVPl2MNB29frIc2iT
TLSH
T12844013737D640BAEC52E2302E7D272AE1BEFA309536950AF7500A0C7A71B918567F53
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
3604	UltraISO.exe
4416	server.exe
6076	UltraISO.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System\UltraISO.exe	jaffacakes118_Trojan.Win32.Chifrax.cmb.exe
File created	C:\Windows\server.exe	UltraISO.exe
File opened for modification	C:\Windows\á}ðíN3$pH3A^+Sj1<m$	UltraISO.exe
File created	C:\Windows\UltraISO.exe	UltraISO.exe
File created	C:\Windows\System\__tmp_rar_sfx_access_check_240735281	jaffacakes118_Trojan.Win32.Chifrax.cmb.exe
File created	C:\Windows\System\UltraISO.exe	jaffacakes118_Trojan.Win32.Chifrax.cmb.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	UltraISO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	UltraISO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_Trojan.Win32.Chifrax.cmb.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4416	server.exe
4416	server.exe
4416	server.exe
4416	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2284 wrote to memory of 3604	2284	jaffacakes118_Trojan.Win32.Chifrax.cmb.exe	89
PID 3604 wrote to memory of 4416	3604	UltraISO.exe	90
PID 4416 wrote to memory of 2828	4416	server.exe	81
PID 4416 wrote to memory of 2828	4416	server.exe	81
PID 4416 wrote to memory of 2828	4416	server.exe	81
PID 3604 wrote to memory of 6076	3604	UltraISO.exe	91

C:\Windows\explorer.exe
explorer.exe /LOADSAVEDWINDOWS
1⤵
PID:2828
- C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.Chifrax.cmb.exe
  "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.Chifrax.cmb.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2284
- - C:\Windows\system\UltraISO.exe
    "C:\Windows\system\UltraISO.exe"
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3604
  - - C:\Windows\server.exe
      "C:\Windows\server.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:4416
  - - C:\Windows\UltraISO.exe
      "C:\Windows\UltraISO.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:6076

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

sfx.ini

Path C:\Users\Admin\AppData\Local\Temp\sfx.ini
Size 211B
SHA256 cb67d32b87e74e5a32f46d8450875a21fde188cf734176d497ed3eede050a9fb
MD5 8abb97295ef5910308f50bc791f100f9
SHA1 ff5c1153063bf5b82e8b1f8989a340f5e56494d0
SHA512 a4621a648250446990b37ef91a5e370644eb481a20adc07ce382f655e74415854592d7997953bf0792f2bd372fa905773c783d0db6defc1a7be31b8697c3fd08
TLSH
T1D6D0229CC1DE05480B9505B14FBA7112229ED7B0F8022201E32130CFBC93A949A3E7AE
MD5 SHA1 SHA512 TLSH

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UltraISO.exe

Path C:\Windows\System\UltraISO.exe
Size 172KB
SHA256 ba5f3742705bc6a474c9fe738d4afbbe2d05b1202b490c95781b1cc8160c253e
MD5 5f9bf7d49cbc360b3f3e5179a39db447
SHA1 9f636f762785eb54c740a8b43aa07ddc152dee1d
SHA512 4b0d7772f8f68f1c95bb65215ff381f21b05c5a6d1a31f013e7b41517a0664531e5bcf54fa26c947002bbbdeae583ff7b66d3d5b3dd0d3987f6d6f9b2a6ec0ff
SSDEEP 3072:b1dlKwgj23+Oz05YoNozmia9Ib2mrvIWVM5SVSOxr8h7O+e:b1dlZro5yJDrvI+IW8hqZ
TLSH
T17A04CFA9FAD382BDD4A1053304A64FB9BF3ABE0071198E53B70DB85B1CB1294DB1635D
MD5 SHA1 SHA512 SSDEEP TLSH

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UltraISO.exe

Path C:\Windows\UltraISO.exe
Size 70KB
SHA256 69112c72dbfb6aaff0104d3d8e5fc38888df9f30ec4229b8c891aede7723be0c
MD5 54088e3d89184acef9c9e67e9bda3729
SHA1 4bc6160bb2744e969826897cd98d8b3fa1afd6c2
SHA512 c01f47d9df13cb1a31c50cc19ceccd5e234105a6b2b56c7d1d1a069fc54c704cdeccc18c4196b853867c0009e39be2e464a2080b56ad23c2b840cfdf36e7aec9
SSDEEP 1536:PXSXF0L6OvLDMN2LfBS0DamJs7bpkIOWbdHnydrHn1hKhmsk:PiLewiDamJIb+IF1ydrHsQ
TLSH
T1E463C07AA7D28927F4A7463009B3E776F3BBF50095179A0B4B501F6F2C317918E1938A
MD5 SHA1 SHA512 SSDEEP TLSH

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server.exe

Path C:\Windows\server.exe
Size 28KB
SHA256 5926f85ec49fda952aec869d9c5e1fa425eb95061ee1ee7e16513af07012bc6a
MD5 919236ab928d734f6a42e99166bc50ca
SHA1 b3f28257b70d15f8d010b6547742ed536ce54941
SHA512 e8eabf9d91519980703f276e8eeb5bb1c7573606917cbda2a93d49f75486d0151c682b15125525bbcc1b3af1f5e77ae2540e5f9cac24d9e5e5546e9fcf327c10
SSDEEP 384:UmOyMLjKMPH1Dxw7ZA8l9ZoA7k+w9G5hmssR0IkR46nzojn8mgRRtssIeo/r5J1i:hUjKVjl9xw3x6nz7vj1wri4w
TLSH
T1CCD2D01EB372FD11C19E1379CAFB5ADD57179C4050630A212252ABDC3EFC68438BB4A4
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2828-37-0x000000007FFF0000-0x000000007FFF1000-memory.dmp

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memory/2828-39-0x000000007FFC0000-0x000000007FFC6000-memory.dmp

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memory/4416-34-0x0000000000400000-0x0000000000409000-memory.dmp

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memory/4416-36-0x0000000010000000-0x0000000010011000-memory.dmp

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memory/4416-43-0x0000000000400000-0x0000000000409000-memory.dmp

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memory/4416-44-0x0000000010000000-0x0000000010011000-memory.dmp

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