8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10

General

Target

8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
Size

2.0MB
MD5

a5cf2917d81abb059c3f25ac3a6e7c5d
SHA1

978f32dcbe7191f3f4b06abf67335f2f75a5161e
SHA256

8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10
SHA512

a10c088c8aeef4991bb5877b0c402247bd4549525341d46f572012d0a17e15a87380486fe1a24c60931df2792245046e5835cecde20e4f6c5c973784cb3ea9c8
SSDEEP

6144:Bl51orRJXlDixHkUXe35rGcEOkCybEaQRXr9HNdvOasDaUhOVlBKN0eet4u55iok:fqXUHkUXe39sOkx2LIaqhOVl0N0ee8D

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4772	8f62950

Unexpected DNS network traffic destination 14 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	114.114.114.114
Destination IP	114.114.114.114
Destination IP	223.5.5.5
Destination IP	114.114.114.114
Destination IP	223.5.5.5
Destination IP	223.5.5.5
Destination IP	223.5.5.5
Destination IP	114.114.114.114
Destination IP	114.114.114.114
Destination IP	114.114.114.114
Destination IP	223.5.5.5
Destination IP	223.5.5.5
Destination IP	223.5.5.5
Destination IP	114.114.114.114

Drops file in System32 directory 13 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_3AF0FDC80EA858911339035786739FF3	8f62950
File created	C:\Windows\SysWOW64\8f62950	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	8f62950
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	8f62950
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData	8f62950
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046	8f62950
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content	8f62950
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_3AF0FDC80EA858911339035786739FF3	8f62950
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	8f62950
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	8f62950
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft	8f62950
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache	8f62950
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046	8f62950

UPX packed file 14 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3660-0-0x0000000000550000-0x00000000005D9000-memory.dmp	upx
behavioral2/files/0x000800000002342c-2.dat	upx
behavioral2/memory/4772-3-0x0000000000080000-0x0000000000109000-memory.dmp	upx
behavioral2/memory/3660-16-0x0000000000550000-0x00000000005D9000-memory.dmp	upx
behavioral2/memory/4772-18-0x0000000000080000-0x0000000000109000-memory.dmp	upx
behavioral2/memory/4772-20-0x0000000000080000-0x0000000000109000-memory.dmp	upx
behavioral2/memory/3660-35-0x0000000000550000-0x00000000005D9000-memory.dmp	upx
behavioral2/memory/4772-36-0x0000000000080000-0x0000000000109000-memory.dmp	upx
behavioral2/memory/3660-37-0x0000000000550000-0x00000000005D9000-memory.dmp	upx
behavioral2/memory/4772-38-0x0000000000080000-0x0000000000109000-memory.dmp	upx
behavioral2/memory/3660-47-0x0000000000550000-0x00000000005D9000-memory.dmp	upx
behavioral2/memory/3660-48-0x0000000000550000-0x00000000005D9000-memory.dmp	upx
behavioral2/memory/3660-49-0x0000000000550000-0x00000000005D9000-memory.dmp	upx
behavioral2/memory/3660-55-0x0000000000550000-0x00000000005D9000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\51b2c8	8f62950
File opened for modification	C:\Windows\3ea918	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8f62950

Modifies data under HKEY_USERS 9 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	8f62950
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	8f62950
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	8f62950
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	8f62950
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	8f62950
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	8f62950
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	8f62950
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	8f62950
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	8f62950

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4772	8f62950
4772	8f62950
4772	8f62950
4772	8f62950
4772	8f62950
4772	8f62950
4772	8f62950
4772	8f62950
3660	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
3660	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
3660	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
3660	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
3660	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
3660	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3660	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
Token: SeTcbPrivilege	3660	8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
Token: SeDebugPrivilege	4772	8f62950
Token: SeTcbPrivilege	4772	8f62950

C:\Users\Admin\AppData\Local\Temp\8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe
"C:\Users\Admin\AppData\Local\Temp\8d941a926cdbf70894e8e9b606bf172b00852758e579e196ac23d864e7319a10.exe"
1⤵
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3660

C:\Windows\Syswow64\8f62950
C:\Windows\Syswow64\8f62950
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\8f62950

Filesize
2.0MB

MD5
8a4e83bafb039bd82cb5a99545d2dbc2

SHA1
42794344ce75302f20aad4e7728f0fdbffc749c6

SHA256
6f16841edd2b5c19b85dfa9b5c6c906b894a15f406ac082e2d585868de0d2420

SHA512
f1ef487ab258f6a52896f459afc061c3d7a9bdeb95f652bb06d2298885867d178ec4c99bd618543b4a3875dbe3a335b7b3ac625e1a2d1b0543d1e687bb5065cf

Download Submit
memory/3660-35-0x0000000000550000-0x00000000005D9000-memory.dmp

Filesize
548KB

Download
memory/3660-16-0x0000000000550000-0x00000000005D9000-memory.dmp

Filesize
548KB

Download
memory/3660-0-0x0000000000550000-0x00000000005D9000-memory.dmp

Filesize
548KB

Download
memory/3660-37-0x0000000000550000-0x00000000005D9000-memory.dmp

Filesize
548KB

Download
memory/3660-47-0x0000000000550000-0x00000000005D9000-memory.dmp

Filesize
548KB

Download
memory/3660-48-0x0000000000550000-0x00000000005D9000-memory.dmp

Filesize
548KB

Download
memory/3660-49-0x0000000000550000-0x00000000005D9000-memory.dmp

Filesize
548KB

Download
memory/3660-55-0x0000000000550000-0x00000000005D9000-memory.dmp

Filesize
548KB

Download
memory/4772-3-0x0000000000080000-0x0000000000109000-memory.dmp

Filesize
548KB

Download
memory/4772-18-0x0000000000080000-0x0000000000109000-memory.dmp

Filesize
548KB

Download
memory/4772-20-0x0000000000080000-0x0000000000109000-memory.dmp

Filesize
548KB

Download
memory/4772-36-0x0000000000080000-0x0000000000109000-memory.dmp

Filesize
548KB

Download
memory/4772-38-0x0000000000080000-0x0000000000109000-memory.dmp

Filesize
548KB

Download

Analysis

Sharing