eb8636afcde958d15d1e43779500b8a21980727a4d9559773e41d1f25c0ccf4a

Analysis

max time kernel
121s
max time network
126s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 07:32

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General

Target

124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe
Size

68KB
MD5

124f69160117b292e2ed2de331d5e08f
SHA1

fce8710e72db75553d33644ecb7b84d3edae9b26
SHA256

eb8636afcde958d15d1e43779500b8a21980727a4d9559773e41d1f25c0ccf4a
SHA512

ce6ee3fdfc5b576935f897ee9c05f90ee5f5023b4a4847c8c62cc2380f346fb77145e1df5d949bed90965a6e545d42c9e34cb8c3ce1a132ad4d8385159ce57c9
SSDEEP

1536:kOC3oppUdCzUwm20MyVpzCRDaroYNhseIXf5wu/3eotT:lC4niCDmznBkhCu/1J

Score

8^/10

defense_evasion discovery exploit upx

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

2056 takeown.exe
2340 icacls.exe
Deletes itself 1 IoCs

Processes:

regsvr32.exe

pid process

1724 regsvr32.exe
Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

1724 regsvr32.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

2056 takeown.exe
2340 icacls.exe
UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
upx

Processes:

resource yara_rule

behavioral1/memory/1912-0-0x0000000000400000-0x0000000000421000-memory.dmp upx
behavioral1/memory/1912-2-0x0000000000400000-0x0000000000421000-memory.dmp upx
File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
defense_evasion

Windows File and Directory Permissions Modification
T1222.001

pid	process
2056	takeown.exe
2340	icacls.exe

pid	process
1724	regsvr32.exe

pid	process
1724	regsvr32.exe

pid	process
2056	takeown.exe
2340	icacls.exe

resource	yara_rule
behavioral1/memory/1912-0-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1912-2-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

Processes:

regsvr32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\apa.dll	regsvr32.exe
File created	C:\Windows\SysWOW64\rpcss.dll	regsvr32.exe
File opened for modification	C:\Windows\SysWOW64\rpcss.dll	regsvr32.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

regsvr32.exe

pid process

1724 regsvr32.exe
1724 regsvr32.exe
1724 regsvr32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

regsvr32.exetakeown.exe

description pid process

Token: SeDebugPrivilege 1724 regsvr32.exe
Token: SeTakeOwnershipPrivilege 2056 takeown.exe

pid	process
1724	regsvr32.exe
1724	regsvr32.exe
1724	regsvr32.exe

description	pid	process
Token: SeDebugPrivilege	1724	regsvr32.exe
Token: SeTakeOwnershipPrivilege	2056	takeown.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exeregsvr32.exe

description	pid	process	target process
PID 1912 wrote to memory of 1724	1912	124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe	regsvr32.exe
PID 1912 wrote to memory of 1724	1912	124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe	regsvr32.exe
PID 1912 wrote to memory of 1724	1912	124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe	regsvr32.exe
PID 1912 wrote to memory of 1724	1912	124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe	regsvr32.exe
PID 1912 wrote to memory of 1724	1912	124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe	regsvr32.exe
PID 1912 wrote to memory of 1724	1912	124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe	regsvr32.exe
PID 1912 wrote to memory of 1724	1912	124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe	regsvr32.exe
PID 1724 wrote to memory of 2056	1724	regsvr32.exe	takeown.exe
PID 1724 wrote to memory of 2056	1724	regsvr32.exe	takeown.exe
PID 1724 wrote to memory of 2056	1724	regsvr32.exe	takeown.exe
PID 1724 wrote to memory of 2056	1724	regsvr32.exe	takeown.exe
PID 1724 wrote to memory of 2340	1724	regsvr32.exe	icacls.exe
PID 1724 wrote to memory of 2340	1724	regsvr32.exe	icacls.exe
PID 1724 wrote to memory of 2340	1724	regsvr32.exe	icacls.exe
PID 1724 wrote to memory of 2340	1724	regsvr32.exe	icacls.exe
PID 1724 wrote to memory of 592	1724	regsvr32.exe	svchost.exe

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch
1⤵
PID:592

C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1912

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\system32\regsvr32.exe" /s C:\Users\Admin\AppData\Local\Temp\~f760faa.tmp ,C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe
2⤵
- Deletes itself
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1724

C:\Windows\SysWOW64\takeown.exe
takeown /f "C:\Windows\system32\rpcss.dll"
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
- Suspicious use of AdjustPrivilegeToken
PID:2056

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Windows\system32\rpcss.dll" /grant administrators:F
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:2340

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Windows File and Directory Permissions Modification

T1222.001

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\~f760faa.tmp
Filesize
1.0MB

MD5
e26424ad9bd766aaab724e585359735c

SHA1
aa9541fa9f0dec3ac72b030238660e0099cf9ff8

SHA256
bbc8e8660b1cad39649afba6df97aa024aa47b706785337fc30c5bf517ec692e

SHA512
f3f2793fcaaae64baeffc817cd500a8a7f3ce766dd4f475396d7f6a30459951adee918829e86f069ea2a6ce46d45aea9b3467f155009de72c03aebc503668604

Download Submit
C:\Windows\SysWOW64\apa.dll
Filesize
190B

MD5
411fd3c00851c55592a263e29973f795

SHA1
c7c906f5da761320fa1cff6b70042df51edcefe8

SHA256
62bd39f9daafb26ce0cb57e551e8abdc94e05a320498936ebf273b0c03b11663

SHA512
2dfe2b20d5c19a3dca76606357ba096ab9b8b7f4c90d92968853dea5a83ed013ead97c4aecb6a4fdc4abeb856453b82560801980feadca27ac980f26e1ffd7fc

Download Submit
memory/592-14-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/1912-0-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1912-2-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download