Analysis
-
max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20220715-en -
resource tags
arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system -
submitted
04-08-2022 23:28
Static task
static1
Behavioral task
behavioral1
Sample
KYmFioOZjadXGyN.exe
Resource
win7-20220715-en
General
-
Target
KYmFioOZjadXGyN.exe
-
Size
858KB
-
MD5
27083a2f76b59bee44401da75eaa2aa0
-
SHA1
fc43853029c2afe4caacada1406ac136a93e19b2
-
SHA256
e01a44ecacb3c4c0e76c2708ad916ca81dba402b6e75a6fbef2874182af6c97f
-
SHA512
b4228d82060d79b8568bed481e06d2734fe997bf1c0f3767ea237f90385cceed86237fa3039e30951df0d1f253aabc89d7b09d4b18ce50246f9400ab865c527d
Malware Config
Extracted
xloader
2.9
zzun
JnNtRHyNupy0GqRzAcasu7hb4rc=
Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=
ePArIFWvjkkMgVEVhw4M4Jk=
26rqUwJ7dD0AiDI=
pBAxMHeK741QFw==
kHD7TPt5846pUMTX
56UnjFjHL1i0j659h3LymRnHpQj+SshC
4vKlKHflPqmWXRbrRwfPtrhb4rc=
6LBd4qButFAi
phMzGll8Ue7Fu+inq5cdnPaSugG3
NKswiQGCvZoG5FgsdHEI
rtTHnuUY8M1qVcXV
SOmECrlAt2oGAA==
L1ep9adutFAi
/UE+/AyvE6uEl28weFI=
IP+xMPQxJR4NE6TK
xvW5GN9/rqA5YUoOVt185Sf7Uw==
fRFNW9DhxL6VF7LA
KFYTfkaY741QFw==
W4JGvMBmt2oGAA==
lnoad0Hkgrwl9uXlghvqdz33UA==
1msShiu+9wisELGDjYAK
FBXFOinAK8ylnMZzi35Okw==
V8Y7/cBnt2oGAA==
VfuI0k5pSmi6+aNjIlAT2mspCZBZLGA=
de74yg89D61bSiU=
V2UPjYUvwh21qdxUr4Mf
DcFXvTxFMlyfL5JJIU0=
GldbH/CCt2oGAA==
sxdEIBwn+o+pUMTX
UmViK+1/Knr8814sdHEI
jrfKoZ6paLyeEBETgw4M4Jk=
SR27MizpGwCa19Kb1A==
2DGo9XUNxBOe19Kb1A==
7tBn2cG8jasWHE7w559Aig==
8qtAoVHxl/KGerbsfA4M4Jk=
fC3AH6Utt2oGAA==
HltlPHZ7FpSpUMTX
xd0B+Pr30gBfQGYXafOW1dOSflv+SshC
DKXWyiOecY7319Kb1A==
Pvx505EaswiHYF3z559Aig==
aJ6kaz7CWKsP9g9Ur4Mf
qcvfxb9TwUoDCrfXw/uTdSkTCJBZLGA=
I++iH8xJxFp73nyUjJOg3/PS/3W7
K1N1guwbLz0AiDI=
vp2SfavTmBXNzLeXmIoUhsB7
UlAVhgIfLT0AiDI=
6BKH5GjHt2YIo/qhA69S+5E=
6U29K+qVw5hT4gQ83A==
G9NTmhwpAwY6r4I69kT4dz33UA==
0qstoaNBmBrMlfwTKhrAtLhb4rc=
ZvMhGW52cyAAXkVV3Jc96Lhb4rc=
N9Z3/PmEt2oGAA==
ohlOhcaP741QFw==
9WF3PohVjEolhCY=
am0ek4wtmkEI9GMVhw4M4Jk=
ROotH4+jhp7vnzVdww==
uvkuFhGmJlyjpFFpi35Okw==
ICHQQTIjaxTryG8weFI=
AhIZ8uh974+pUMTX
pEBtSFHr/5s0GQ==
qAcuLnqLNeOpUMTX
bcHv6WdbHoWEylgsdHEI
Nz/rbWh3s4WFDL9uPlAhXKNz
secure-id6793-chase.com
Signatures
-
Xloader payload 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1604-62-0x0000000000400000-0x000000000042C000-memory.dmp xloader behavioral1/memory/1604-63-0x000000000041F6F0-mapping.dmp xloader behavioral1/memory/1604-69-0x0000000000400000-0x000000000042C000-memory.dmp xloader behavioral1/memory/1360-73-0x0000000000070000-0x000000000009C000-memory.dmp xloader behavioral1/memory/1360-76-0x0000000000070000-0x000000000009C000-memory.dmp xloader -
Adds policy Run key to start application 2 TTPs 2 IoCs
Processes:
wscript.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run wscript.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\IRAHMLU = "C:\\Program Files (x86)\\Izv1h8\\vga1bgx.exe" wscript.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
KYmFioOZjadXGyN.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Control Panel\International\Geo\Nation KYmFioOZjadXGyN.exe -
Deletes itself 1 IoCs
Processes:
cmd.exepid process 736 cmd.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Suspicious use of SetThreadContext 3 IoCs
Processes:
KYmFioOZjadXGyN.exeKYmFioOZjadXGyN.exewscript.exedescription pid process target process PID 1976 set thread context of 1604 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1604 set thread context of 1296 1604 KYmFioOZjadXGyN.exe Explorer.EXE PID 1360 set thread context of 1296 1360 wscript.exe Explorer.EXE -
Drops file in Program Files directory 1 IoCs
Processes:
wscript.exedescription ioc process File opened for modification C:\Program Files (x86)\Izv1h8\vga1bgx.exe wscript.exe -
Processes:
wscript.exedescription ioc process Key created \Registry\User\S-1-5-21-3440072777-2118400376-1759599358-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 wscript.exe -
Suspicious behavior: EnumeratesProcesses 21 IoCs
Processes:
KYmFioOZjadXGyN.exeKYmFioOZjadXGyN.exewscript.exepid process 1976 KYmFioOZjadXGyN.exe 1604 KYmFioOZjadXGyN.exe 1604 KYmFioOZjadXGyN.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe -
Suspicious behavior: MapViewOfSection 7 IoCs
Processes:
KYmFioOZjadXGyN.exewscript.exepid process 1604 KYmFioOZjadXGyN.exe 1604 KYmFioOZjadXGyN.exe 1604 KYmFioOZjadXGyN.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe 1360 wscript.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
KYmFioOZjadXGyN.exeKYmFioOZjadXGyN.exewscript.exedescription pid process Token: SeDebugPrivilege 1976 KYmFioOZjadXGyN.exe Token: SeDebugPrivilege 1604 KYmFioOZjadXGyN.exe Token: SeDebugPrivilege 1360 wscript.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
Explorer.EXEpid process 1296 Explorer.EXE 1296 Explorer.EXE -
Suspicious use of SendNotifyMessage 2 IoCs
Processes:
Explorer.EXEpid process 1296 Explorer.EXE 1296 Explorer.EXE -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
KYmFioOZjadXGyN.exeExplorer.EXEwscript.exedescription pid process target process PID 1976 wrote to memory of 1656 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1976 wrote to memory of 1656 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1976 wrote to memory of 1656 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1976 wrote to memory of 1656 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1976 wrote to memory of 1604 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1976 wrote to memory of 1604 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1976 wrote to memory of 1604 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1976 wrote to memory of 1604 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1976 wrote to memory of 1604 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1976 wrote to memory of 1604 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1976 wrote to memory of 1604 1976 KYmFioOZjadXGyN.exe KYmFioOZjadXGyN.exe PID 1296 wrote to memory of 1360 1296 Explorer.EXE wscript.exe PID 1296 wrote to memory of 1360 1296 Explorer.EXE wscript.exe PID 1296 wrote to memory of 1360 1296 Explorer.EXE wscript.exe PID 1296 wrote to memory of 1360 1296 Explorer.EXE wscript.exe PID 1360 wrote to memory of 736 1360 wscript.exe cmd.exe PID 1360 wrote to memory of 736 1360 wscript.exe cmd.exe PID 1360 wrote to memory of 736 1360 wscript.exe cmd.exe PID 1360 wrote to memory of 736 1360 wscript.exe cmd.exe PID 1360 wrote to memory of 1944 1360 wscript.exe Firefox.exe PID 1360 wrote to memory of 1944 1360 wscript.exe Firefox.exe PID 1360 wrote to memory of 1944 1360 wscript.exe Firefox.exe PID 1360 wrote to memory of 1944 1360 wscript.exe Firefox.exe PID 1360 wrote to memory of 1944 1360 wscript.exe Firefox.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
wscript.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer wscript.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\KYmFioOZjadXGyN.exe"C:\Users\Admin\AppData\Local\Temp\KYmFioOZjadXGyN.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\KYmFioOZjadXGyN.exe"{path}"3⤵
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C:\Users\Admin\AppData\Local\Temp\KYmFioOZjadXGyN.exe"{path}"3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\wscript.exe"C:\Windows\SysWOW64\wscript.exe"2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\SysWOW64\cmd.exe/c del "C:\Users\Admin\AppData\Local\Temp\KYmFioOZjadXGyN.exe"3⤵
- Deletes itself
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/736-70-0x0000000000000000-mapping.dmp
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memory/1296-67-0x0000000004B70000-0x0000000004C4D000-memory.dmpFilesize
884KB
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memory/1296-77-0x0000000005070000-0x000000000513F000-memory.dmpFilesize
828KB
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memory/1296-75-0x0000000005070000-0x000000000513F000-memory.dmpFilesize
828KB
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memory/1360-72-0x0000000002100000-0x0000000002403000-memory.dmpFilesize
3.0MB
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memory/1360-68-0x0000000000000000-mapping.dmp
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memory/1360-76-0x0000000000070000-0x000000000009C000-memory.dmpFilesize
176KB
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memory/1360-74-0x0000000001F70000-0x0000000002000000-memory.dmpFilesize
576KB
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memory/1360-71-0x0000000000B40000-0x0000000000B66000-memory.dmpFilesize
152KB
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memory/1360-73-0x0000000000070000-0x000000000009C000-memory.dmpFilesize
176KB
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memory/1604-65-0x0000000000BF0000-0x0000000000EF3000-memory.dmpFilesize
3.0MB
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memory/1604-66-0x0000000000350000-0x0000000000361000-memory.dmpFilesize
68KB
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memory/1604-69-0x0000000000400000-0x000000000042C000-memory.dmpFilesize
176KB
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memory/1604-59-0x0000000000400000-0x000000000042C000-memory.dmpFilesize
176KB
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memory/1604-63-0x000000000041F6F0-mapping.dmp
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memory/1604-62-0x0000000000400000-0x000000000042C000-memory.dmpFilesize
176KB
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memory/1604-60-0x0000000000400000-0x000000000042C000-memory.dmpFilesize
176KB
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memory/1976-58-0x0000000000A60000-0x0000000000A92000-memory.dmpFilesize
200KB
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memory/1976-57-0x0000000005C70000-0x0000000005CF6000-memory.dmpFilesize
536KB
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memory/1976-54-0x0000000000980000-0x0000000000A5C000-memory.dmpFilesize
880KB
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memory/1976-56-0x0000000000350000-0x000000000035A000-memory.dmpFilesize
40KB
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memory/1976-55-0x0000000076901000-0x0000000076903000-memory.dmpFilesize
8KB