isrstealer | e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0

Analysis

max time kernel
194s
max time network
90s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
28/11/2022, 15:08

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General

Target

e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe
Size

736KB
MD5

acfe17220eed492d5b3b5b85cba17f27
SHA1

5725d2196c2eb9649d57aa6891381521968cff6d
SHA256

e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0
SHA512

f8e4fe56aea6b86fa828e970ead3d957d39de883e64dd19d1f199079b58b8855d209723707bb16192fc6a5c9e276834f41011fc955389184388bf0bf2bc0d96a
SSDEEP

12288:1C0FSVMHdOacQlm0vTMsAdAqcaONPLMjgjgjgjgjgjgjgjgjgjgjgjgjgjgjgjgq:v8oOLQQoOdAq4NHKK

Score

10^/10

isrstealer persistence spyware stealer trojan upx

Malware Config

Signatures

ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
trojan stealer isrstealer

ISR Stealer payload 6 IoCs

resource	yara_rule
behavioral1/memory/1516-59-0x0000000000400000-0x000000000045C000-memory.dmp	family_isrstealer
behavioral1/memory/1516-61-0x0000000000400000-0x000000000045C000-memory.dmp	family_isrstealer
behavioral1/memory/1516-62-0x00000000004011A8-mapping.dmp	family_isrstealer
behavioral1/memory/1516-72-0x0000000000400000-0x000000000045C000-memory.dmp	family_isrstealer
behavioral1/memory/1516-75-0x0000000000400000-0x000000000045C000-memory.dmp	family_isrstealer
behavioral1/memory/1516-93-0x0000000000400000-0x000000000045C000-memory.dmp	family_isrstealer

Executes dropped EXE 3 IoCs

pid	Process
540	1.exe
1092	gfdgfd.Exe
1244	dll.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1164-66-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/1164-70-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/1164-71-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/1164-73-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/files/0x000a00000001231c-78.dat	upx
behavioral1/memory/1164-76-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/files/0x000a00000001231c-79.dat	upx
behavioral1/files/0x000a00000001231c-81.dat	upx
behavioral1/memory/540-87-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/540-92-0x0000000000400000-0x0000000000470000-memory.dmp	upx

Loads dropped DLL 6 IoCs

pid	Process
1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe
1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe
540	1.exe
540	1.exe
1092	gfdgfd.Exe
1092	gfdgfd.Exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\dll = "C:\\Users\\Admin\\AppData\\Roaming\\{0664ECA6-B456-E195-1216-E87E3554727E}\\dll.exe"	dll.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\windows\CurrentVersion\Run	dll.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1688 set thread context of 1516	1688	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	28
PID 1516 set thread context of 1164	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	29

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files\Bearshare\Shared\ Adobe Photoshop CS6 Keygen.exe	gfdgfd.Exe
File created	C:\Program Files\Kazaa\My Shared Folder\Adobe Photoshop CS6 Keygen.exe	gfdgfd.Exe
File created	C:\Program Files\Ares\My Shared Folder\Adobe Photoshop CS6 Keygen.exe	gfdgfd.Exe
File created	C:\Program Files\LimeWire\Shared\Adobe Photoshop CS6 Keygen.exe	gfdgfd.Exe
File created	C:\Program Files\eMule\Incoming\Adobe Photoshop CS6 Keygen.exe	gfdgfd.Exe
File created	C:\Program Files\Morpheus\My Shared Folder\Adobe Photoshop CS6 Keygen.exe	gfdgfd.Exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1244	dll.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
1688	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe
1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe
540	1.exe
1092	gfdgfd.Exe
1092	gfdgfd.Exe
1244	dll.exe
1244	dll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 1516	1688	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	28
PID 1688 wrote to memory of 1516	1688	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	28
PID 1688 wrote to memory of 1516	1688	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	28
PID 1688 wrote to memory of 1516	1688	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	28
PID 1688 wrote to memory of 1516	1688	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	28
PID 1688 wrote to memory of 1516	1688	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	28
PID 1688 wrote to memory of 1516	1688	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	28
PID 1688 wrote to memory of 1516	1688	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	28
PID 1516 wrote to memory of 1164	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	29
PID 1516 wrote to memory of 1164	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	29
PID 1516 wrote to memory of 1164	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	29
PID 1516 wrote to memory of 1164	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	29
PID 1516 wrote to memory of 1164	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	29
PID 1516 wrote to memory of 1164	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	29
PID 1516 wrote to memory of 1164	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	29
PID 1516 wrote to memory of 1164	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	29
PID 1516 wrote to memory of 1164	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	29
PID 1516 wrote to memory of 540	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	30
PID 1516 wrote to memory of 540	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	30
PID 1516 wrote to memory of 540	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	30
PID 1516 wrote to memory of 540	1516	e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe	30
PID 540 wrote to memory of 1092	540	1.exe	31
PID 540 wrote to memory of 1092	540	1.exe	31
PID 540 wrote to memory of 1092	540	1.exe	31
PID 540 wrote to memory of 1092	540	1.exe	31
PID 1092 wrote to memory of 1244	1092	gfdgfd.Exe	32
PID 1092 wrote to memory of 1244	1092	gfdgfd.Exe	32
PID 1092 wrote to memory of 1244	1092	gfdgfd.Exe	32
PID 1092 wrote to memory of 1244	1092	gfdgfd.Exe	32
PID 1092 wrote to memory of 856	1092	gfdgfd.Exe	33
PID 1092 wrote to memory of 856	1092	gfdgfd.Exe	33
PID 1092 wrote to memory of 856	1092	gfdgfd.Exe	33
PID 1092 wrote to memory of 856	1092	gfdgfd.Exe	33

C:\Users\Admin\AppData\Local\Temp\e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe
"C:\Users\Admin\AppData\Local\Temp\e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe
  "C:\Users\Admin\AppData\Local\Temp\e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1516
- - C:\Users\Admin\AppData\Local\Temp\e2dadd4afd1670177335f5426022a13a795b5a202e11b17f281ebcd0ee6b78d0.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\SLaZ7redM6.ini"
    3⤵
    PID:1164
- - C:\Users\Admin\AppData\Local\Temp\1.exe
    C:\Users\Admin\AppData\Local\Temp\1.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:540
  - - C:\Users\Admin\AppData\Local\Temp\gfdgfd.Exe
      "C:\Users\Admin\AppData\Local\Temp\gfdgfd.Exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Program Files directory
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1092
    - - C:\Users\Admin\AppData\Roaming\{0664ECA6-B456-E195-1216-E87E3554727E}\dll.exe
        
        C:\Users\Admin\AppData\Roaming\{0664ECA6-B456-E195-1216-E87E3554727E}\dll.exe
        5⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:1244
    - - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c C:\x.bat
        5⤵
        
        PID:856

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\1.exe

Filesize
160KB

MD5
696402f485b8d7cf3e14866610618e92

SHA1
af352f96f40c25220a603238e2223aa031122aeb

SHA256
cfa324edeb2e91ad7e14ea6b7eca519d33f74bb980186d3cef7b396b85719440

SHA512
cb8744b97db2050063470da89d7d3b3f7ec0c1240bcf6472603df7287ee05d0ffbf6a084c68e7527b5ba5ee266d0d5a70cd924ebbeb03e22fe10afb49383d48d

Download Submit
C:\Users\Admin\AppData\Local\Temp\SLaZ7redM6.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
C:\Users\Admin\AppData\Local\Temp\gfdgfd.Exe

Filesize
184KB

MD5
2e9c2a02021677d34195c55643497bae

SHA1
cd1337ecfec14055c664e9b079a49b2140d0aeb1

SHA256
c4ba24c4a51af58b6cf657d775ffb2e7813285088e53b46099d77226cd9f1f66

SHA512
3b00639ab1fe57e6838b1e375ff725c5b9871ae7d3e3c580002a5dd9c823ecadb2c8e4369ac17ba8933d2663857cfc6d41a843bc9a2d98e1a03102258a9745ba

Download Submit
C:\Users\Admin\AppData\Local\Temp\gfdgfd.exe

Filesize
184KB

MD5
2e9c2a02021677d34195c55643497bae

SHA1
cd1337ecfec14055c664e9b079a49b2140d0aeb1

SHA256
c4ba24c4a51af58b6cf657d775ffb2e7813285088e53b46099d77226cd9f1f66

SHA512
3b00639ab1fe57e6838b1e375ff725c5b9871ae7d3e3c580002a5dd9c823ecadb2c8e4369ac17ba8933d2663857cfc6d41a843bc9a2d98e1a03102258a9745ba

Download Submit
C:\Users\Admin\AppData\Roaming\{0664ECA6-B456-E195-1216-E87E3554727E}\dll.exe

Filesize
184KB

MD5
2e9c2a02021677d34195c55643497bae

SHA1
cd1337ecfec14055c664e9b079a49b2140d0aeb1

SHA256
c4ba24c4a51af58b6cf657d775ffb2e7813285088e53b46099d77226cd9f1f66

SHA512
3b00639ab1fe57e6838b1e375ff725c5b9871ae7d3e3c580002a5dd9c823ecadb2c8e4369ac17ba8933d2663857cfc6d41a843bc9a2d98e1a03102258a9745ba

Download Submit
C:\Users\Admin\AppData\Roaming\{0664ECA6-B456-E195-1216-E87E3554727E}\dll.exe

Filesize
184KB

MD5
2e9c2a02021677d34195c55643497bae

SHA1
cd1337ecfec14055c664e9b079a49b2140d0aeb1

SHA256
c4ba24c4a51af58b6cf657d775ffb2e7813285088e53b46099d77226cd9f1f66

SHA512
3b00639ab1fe57e6838b1e375ff725c5b9871ae7d3e3c580002a5dd9c823ecadb2c8e4369ac17ba8933d2663857cfc6d41a843bc9a2d98e1a03102258a9745ba

Download Submit
\Users\Admin\AppData\Local\Temp\1.exe

Filesize
160KB

MD5
696402f485b8d7cf3e14866610618e92

SHA1
af352f96f40c25220a603238e2223aa031122aeb

SHA256
cfa324edeb2e91ad7e14ea6b7eca519d33f74bb980186d3cef7b396b85719440

SHA512
cb8744b97db2050063470da89d7d3b3f7ec0c1240bcf6472603df7287ee05d0ffbf6a084c68e7527b5ba5ee266d0d5a70cd924ebbeb03e22fe10afb49383d48d

Download Submit
\Users\Admin\AppData\Local\Temp\1.exe

Filesize
160KB

MD5
696402f485b8d7cf3e14866610618e92

SHA1
af352f96f40c25220a603238e2223aa031122aeb

SHA256
cfa324edeb2e91ad7e14ea6b7eca519d33f74bb980186d3cef7b396b85719440

SHA512
cb8744b97db2050063470da89d7d3b3f7ec0c1240bcf6472603df7287ee05d0ffbf6a084c68e7527b5ba5ee266d0d5a70cd924ebbeb03e22fe10afb49383d48d

Download Submit
\Users\Admin\AppData\Local\Temp\gfdgfd.Exe

Filesize
184KB

MD5
2e9c2a02021677d34195c55643497bae

SHA1
cd1337ecfec14055c664e9b079a49b2140d0aeb1

SHA256
c4ba24c4a51af58b6cf657d775ffb2e7813285088e53b46099d77226cd9f1f66

SHA512
3b00639ab1fe57e6838b1e375ff725c5b9871ae7d3e3c580002a5dd9c823ecadb2c8e4369ac17ba8933d2663857cfc6d41a843bc9a2d98e1a03102258a9745ba

Download Submit
\Users\Admin\AppData\Local\Temp\gfdgfd.Exe

Filesize
184KB

MD5
2e9c2a02021677d34195c55643497bae

SHA1
cd1337ecfec14055c664e9b079a49b2140d0aeb1

SHA256
c4ba24c4a51af58b6cf657d775ffb2e7813285088e53b46099d77226cd9f1f66

SHA512
3b00639ab1fe57e6838b1e375ff725c5b9871ae7d3e3c580002a5dd9c823ecadb2c8e4369ac17ba8933d2663857cfc6d41a843bc9a2d98e1a03102258a9745ba

Download Submit
\Users\Admin\AppData\Roaming\{0664ECA6-B456-E195-1216-E87E3554727E}\dll.exe

Filesize
184KB

MD5
2e9c2a02021677d34195c55643497bae

SHA1
cd1337ecfec14055c664e9b079a49b2140d0aeb1

SHA256
c4ba24c4a51af58b6cf657d775ffb2e7813285088e53b46099d77226cd9f1f66

SHA512
3b00639ab1fe57e6838b1e375ff725c5b9871ae7d3e3c580002a5dd9c823ecadb2c8e4369ac17ba8933d2663857cfc6d41a843bc9a2d98e1a03102258a9745ba

Download Submit
\Users\Admin\AppData\Roaming\{0664ECA6-B456-E195-1216-E87E3554727E}\dll.exe

Filesize
184KB

MD5
2e9c2a02021677d34195c55643497bae

SHA1
cd1337ecfec14055c664e9b079a49b2140d0aeb1

SHA256
c4ba24c4a51af58b6cf657d775ffb2e7813285088e53b46099d77226cd9f1f66

SHA512
3b00639ab1fe57e6838b1e375ff725c5b9871ae7d3e3c580002a5dd9c823ecadb2c8e4369ac17ba8933d2663857cfc6d41a843bc9a2d98e1a03102258a9745ba

Download Submit
memory/540-87-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/540-92-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1164-69-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

Filesize
8KB

Download
memory/1164-73-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1164-76-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1164-70-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1164-71-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1164-66-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1516-72-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1516-75-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1516-93-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1516-56-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1516-84-0x0000000002520000-0x0000000002590000-memory.dmp

Filesize
448KB

Download
memory/1516-86-0x0000000002520000-0x0000000002590000-memory.dmp

Filesize
448KB

Download
memory/1516-61-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1516-59-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1516-57-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download