nymaim | 72247d389d9dc7be047eac72d23adf8a19a4fb5e4ec4c047a4bb098099941c81

Analysis

max time kernel
61s
max time network
110s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/10/2022, 00:05

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 2.3MB
Sample221027-ac622aabcr
SHA256 72247d389d9dc7be047eac72d23adf8a19a4fb5e4ec4c047a4bb098099941c81
MD5 6633c69b5847746488ce6ac1a08c7541
SHA1 51646f7a1daded6243d06d468f72635ebfbafe7c
SHA512 134da580afd3de3be8c694fae002015877f8b12c4ea44dd16a3715881882fd5f6a0070e2de801153ff7fda97df6af7b4767b8d82970500ab70d8e8750b1601aa
SSDEEP 49152:Z2iywF6gIr94M24GseeOAAc4uuIuq0OpfzNJCBCggvFzcp9NcNneb+PrdA5hq:MihF6nr2tdHJuutjOX9ggvhrNnWuuDq
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
4796	is-IC3DN.tmp
2392	exsearcher60.exe
4760	mMOri8E.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	exsearcher60.exe

Loads dropped DLL 1 IoCs

pid	Process
4796	is-IC3DN.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\exSearcher\is-OOOED.tmp	is-IC3DN.tmp
File created	C:\Program Files (x86)\exSearcher\is-L9OOE.tmp	is-IC3DN.tmp
File created	C:\Program Files (x86)\exSearcher\is-AR8L4.tmp	is-IC3DN.tmp
File opened for modification	C:\Program Files (x86)\exSearcher\unins000.dat	is-IC3DN.tmp
File created	C:\Program Files (x86)\exSearcher\unins000.dat	is-IC3DN.tmp
File created	C:\Program Files (x86)\exSearcher\is-5TF4H.tmp	is-IC3DN.tmp
File created	C:\Program Files (x86)\exSearcher\is-KMV6D.tmp	is-IC3DN.tmp
File created	C:\Program Files (x86)\exSearcher\is-DBVSR.tmp	is-IC3DN.tmp
File created	C:\Program Files (x86)\exSearcher\is-4UG66.tmp	is-IC3DN.tmp
File opened for modification	C:\Program Files (x86)\exSearcher\exsearcher60.exe	is-IC3DN.tmp
File created	C:\Program Files (x86)\exSearcher\is-VBQBQ.tmp	is-IC3DN.tmp
File created	C:\Program Files (x86)\exSearcher\is-56M71.tmp	is-IC3DN.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1916	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2392	exsearcher60.exe
2392	exsearcher60.exe
2392	exsearcher60.exe
2392	exsearcher60.exe
2392	exsearcher60.exe
2392	exsearcher60.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1916	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1052 wrote to memory of 4796	1052	file.exe	82
PID 1052 wrote to memory of 4796	1052	file.exe	82
PID 1052 wrote to memory of 4796	1052	file.exe	82
PID 4796 wrote to memory of 2392	4796	is-IC3DN.tmp	83
PID 4796 wrote to memory of 2392	4796	is-IC3DN.tmp	83
PID 4796 wrote to memory of 2392	4796	is-IC3DN.tmp	83
PID 2392 wrote to memory of 4760	2392	exsearcher60.exe	91
PID 2392 wrote to memory of 4760	2392	exsearcher60.exe	91
PID 2392 wrote to memory of 4760	2392	exsearcher60.exe	91
PID 2392 wrote to memory of 3292	2392	exsearcher60.exe	92
PID 2392 wrote to memory of 3292	2392	exsearcher60.exe	92
PID 2392 wrote to memory of 3292	2392	exsearcher60.exe	92
PID 3292 wrote to memory of 1916	3292	cmd.exe	94
PID 3292 wrote to memory of 1916	3292	cmd.exe	94
PID 3292 wrote to memory of 1916	3292	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1052
- C:\Users\Admin\AppData\Local\Temp\is-5OLIA.tmp\is-IC3DN.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-5OLIA.tmp\is-IC3DN.tmp" /SL4 $E01DC "C:\Users\Admin\AppData\Local\Temp\file.exe" 2118394 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4796
- - C:\Program Files (x86)\exSearcher\exsearcher60.exe
    "C:\Program Files (x86)\exSearcher\exsearcher60.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2392
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\mMOri8E.exe
      4⤵
      Executes dropped EXE
      PID:4760
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "exsearcher60.exe" /f & erase "C:\Program Files (x86)\exSearcher\exsearcher60.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3292
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "exsearcher60.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1916

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

exsearcher60.exe

Path C:\Program Files (x86)\exSearcher\exsearcher60.exe
Size 3.3MB
SHA256 bc00375de520bfde395849445f3b0a1fd2ae1353432e90406572ff11fecdfa09
MD5 8da16e0535380bc092ea28945d8eb9b6
SHA1 f6a7c41b2105bd91b5deed3ee44ae7d07b7a3d25
SHA512 72ee55328c1ccd26d75ab558573c6894bf576b595036ca5d074b3e6241e37e1e5dae00f2f0df9b65d2eb60cb2d777f2db8e5084a1a323a5de069cfe59e6cd832
SSDEEP 49152:qrDmsxSZUHzlPpzVvJv+SZPsiHFEfvxc6c0z0r6UVbG:8mUyYlPpzVvJ2SZUiHufvxc30zANVa
MD5 SHA1 SHA512 SSDEEP

Submit Download

exsearcher60.exe

Path C:\Program Files (x86)\exSearcher\exsearcher60.exe
Size 3.3MB
SHA256 bc00375de520bfde395849445f3b0a1fd2ae1353432e90406572ff11fecdfa09
MD5 8da16e0535380bc092ea28945d8eb9b6
SHA1 f6a7c41b2105bd91b5deed3ee44ae7d07b7a3d25
SHA512 72ee55328c1ccd26d75ab558573c6894bf576b595036ca5d074b3e6241e37e1e5dae00f2f0df9b65d2eb60cb2d777f2db8e5084a1a323a5de069cfe59e6cd832
SSDEEP 49152:qrDmsxSZUHzlPpzVvJv+SZPsiHFEfvxc6c0z0r6UVbG:8mUyYlPpzVvJ2SZUiHufvxc30zANVa
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-IC3DN.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-5OLIA.tmp\is-IC3DN.tmp
Size 657KB
SHA256 e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
MD5 7cd12c54a9751ca6eee6ab0c85fb68f5
SHA1 76562e9b7888b6d20d67addb5a90b68b54a51987
SHA512 27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
SSDEEP 12288:CkxzRCUn4rP/37YzHXA6/YUKsGjQNw4qpRRpDWowphIxz:ZFRCUn4rP/37YzHXA6QJsoPtIpqxz
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-IC3DN.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-5OLIA.tmp\is-IC3DN.tmp
Size 657KB
SHA256 e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
MD5 7cd12c54a9751ca6eee6ab0c85fb68f5
SHA1 76562e9b7888b6d20d67addb5a90b68b54a51987
SHA512 27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
SSDEEP 12288:CkxzRCUn4rP/37YzHXA6/YUKsGjQNw4qpRRpDWowphIxz:ZFRCUn4rP/37YzHXA6QJsoPtIpqxz
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-V6E8N.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

mMOri8E.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\mMOri8E.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

mMOri8E.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\mMOri8E.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1052-138-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/1052-132-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/1052-156-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/2392-144-0x0000000000400000-0x000000000154C000-memory.dmp

Download

memory/2392-145-0x0000000000400000-0x000000000154C000-memory.dmp

Download

memory/2392-149-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/2392-142-0x0000000000400000-0x000000000154C000-memory.dmp

Download

memory/2392-155-0x0000000000400000-0x000000000154C000-memory.dmp

Download

memory/2392-143-0x0000000000400000-0x000000000154C000-memory.dmp

Download