738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48

General

Target

738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
Size

58KB
MD5

5533f0feb5899ab595af53c3dd66507a
SHA1

9203820b601f75146ecbb965852fd6b001002a2a
SHA256

738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48
SHA512

7326ffe25fb04145bb290e9c562dbee62c0262f36f2dde088676f2f6bffb4f00e04651f2bde0fb3e76be468de6aa4dcfca50c9a6a716ca2d5a1792a4be4763fb
SSDEEP

1536:RKLY+dV5AbO4+4UsmhFBsx2GCnLRkIhuiD:RKs+P5cmix2GiLRrui

Score

8^/10

evasion upx

Malware Config

Signatures

Stops running service(s) 3 TTPs
evasion

Modify Existing Service
T1031

Impair Defenses
T1562

Service Stop
T1489

UPX packed file 1 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1160-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Loads dropped DLL 4 IoCs

Processes:

738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe

pid	process
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe

Drops file in System32 directory 9 IoCs

Processes:

738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe

description	ioc	process
File created	C:\Windows\SysWOW64\ZERMMMDR10.dll	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
File created	C:\Windows\SysWOW64\yuksuser.dll	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
File created	C:\Windows\SysWOW64\ZERMMMDR.ime	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
File opened for modification	C:\Windows\SysWOW64\yuksuser.dll	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
File created	C:\Windows\SysWOW64\ksuser.dll	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
File created	C:\Windows\SysWOW64\midimap.dll	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe

Launches sc.exe 2 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exe

pid process

1720 sc.exe
1148 sc.exe
Runs net.exe

pid	process
1720	sc.exe
1148	sc.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe

pid	process
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe

description	pid	process
Token: SeDebugPrivilege	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
Token: SeDebugPrivilege	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exenet.exe

description	pid	process	target process
PID 1160 wrote to memory of 1288	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	Explorer.EXE
PID 1160 wrote to memory of 1676	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	net.exe
PID 1160 wrote to memory of 1676	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	net.exe
PID 1160 wrote to memory of 1676	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	net.exe
PID 1160 wrote to memory of 1676	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	net.exe
PID 1160 wrote to memory of 1720	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	sc.exe
PID 1160 wrote to memory of 1720	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	sc.exe
PID 1160 wrote to memory of 1720	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	sc.exe
PID 1160 wrote to memory of 1720	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	sc.exe
PID 1160 wrote to memory of 1148	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	sc.exe
PID 1160 wrote to memory of 1148	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	sc.exe
PID 1160 wrote to memory of 1148	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	sc.exe
PID 1160 wrote to memory of 1148	1160	738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe	sc.exe
PID 1676 wrote to memory of 1132	1676	net.exe	net1.exe
PID 1676 wrote to memory of 1132	1676	net.exe	net1.exe
PID 1676 wrote to memory of 1132	1676	net.exe	net1.exe
PID 1676 wrote to memory of 1132	1676	net.exe	net1.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1288

C:\Users\Admin\AppData\Local\Temp\738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe
"C:\Users\Admin\AppData\Local\Temp\738c1f2637aa6d16abe4dab0c9abfc32f51250a2b9be15c086ec4a2671ac3a48.exe"
2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1160

C:\Windows\SysWOW64\net.exe
net stop cryptsvc
3⤵
- Suspicious use of WriteProcessMemory
PID:1676

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop cryptsvc
4⤵
PID:1132

C:\Windows\SysWOW64\sc.exe
sc config cryptsvc start= disabled
3⤵
- Launches sc.exe
PID:1720

C:\Windows\SysWOW64\sc.exe
sc delete cryptsvc
3⤵
- Launches sc.exe
PID:1148

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Privilege Escalation

Defense Evasion

Impair Defenses

1

T1562

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Service Stop

1

T1489

Replay Monitor

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Downloads

\Windows\SysWOW64\ZERMMMDR.ime
Filesize
6KB

MD5
281b64bbd2ef8735a55e29bf2561dda7

SHA1
a579005b30f85bdbdab013832638bdbcfd00ff31

SHA256
6ef3cc0a6f10da8e23fc961006fb025a98d83b75171364909669f21a2eb40607

SHA512
5f915d49a0da0e1e528cfb42c7b46f2f204320b68b7a137a5e083cb8e66da5765c292a8e03b27c4c5d7d722bd82fbe1a549326d58e9fe2aeb011433ddef6751c

Download Submit
\Windows\SysWOW64\ZERMMMDR.ime
Filesize
6KB

MD5
281b64bbd2ef8735a55e29bf2561dda7

SHA1
a579005b30f85bdbdab013832638bdbcfd00ff31

SHA256
6ef3cc0a6f10da8e23fc961006fb025a98d83b75171364909669f21a2eb40607

SHA512
5f915d49a0da0e1e528cfb42c7b46f2f204320b68b7a137a5e083cb8e66da5765c292a8e03b27c4c5d7d722bd82fbe1a549326d58e9fe2aeb011433ddef6751c

Download Submit
\Windows\SysWOW64\ZERMMMDR.ime
Filesize
6KB

MD5
281b64bbd2ef8735a55e29bf2561dda7

SHA1
a579005b30f85bdbdab013832638bdbcfd00ff31

SHA256
6ef3cc0a6f10da8e23fc961006fb025a98d83b75171364909669f21a2eb40607

SHA512
5f915d49a0da0e1e528cfb42c7b46f2f204320b68b7a137a5e083cb8e66da5765c292a8e03b27c4c5d7d722bd82fbe1a549326d58e9fe2aeb011433ddef6751c

Download Submit
\Windows\SysWOW64\ZERMMMDR.ime
Filesize
6KB

MD5
281b64bbd2ef8735a55e29bf2561dda7

SHA1
a579005b30f85bdbdab013832638bdbcfd00ff31

SHA256
6ef3cc0a6f10da8e23fc961006fb025a98d83b75171364909669f21a2eb40607

SHA512
5f915d49a0da0e1e528cfb42c7b46f2f204320b68b7a137a5e083cb8e66da5765c292a8e03b27c4c5d7d722bd82fbe1a549326d58e9fe2aeb011433ddef6751c

Download Submit
memory/1132-61-0x0000000000000000-mapping.dmp

Download
memory/1148-60-0x0000000000000000-mapping.dmp

Download
memory/1160-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1676-58-0x0000000000000000-mapping.dmp

Download
memory/1720-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads