nymaim | d40e885372f07f3cb35ebbc99ac3dbba5d0f34c6ad58d461dbf37505be04d67d

General

Target

d40e885372f07f3cb35ebbc99ac3dbba5d0f34c6ad58d461dbf37505be04d67d.exe
Size

2.5MB
MD5

0b574da38976aa6e63c774d3dd07af18
SHA1

1550f2775795e0f1eefcb431fc1651be8c17375e
SHA256

d40e885372f07f3cb35ebbc99ac3dbba5d0f34c6ad58d461dbf37505be04d67d
SHA512

14744f9d075e5509780dc318607c90bc6b36c9cf2f9b0c5d62bd15f49746e01db90339b9d622093a72d4b96e14452901a6dca0ed39a779fd0bec3b8137418134
SSDEEP

49152:Z2ymeb9E9Rhh6Nxil9cw7lvSK+3Um/2F496Zix1ONApK3t9+U5in8zA5hq:MGUfq2dlK3UBFC6QpKv+UwzDq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

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
3480	is-4AQCE.tmp
2160	flsearcher67.exe
916	r5QUbVFsJ.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	flsearcher67.exe

Loads dropped DLL 1 IoCs

pid	Process
3480	is-4AQCE.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)\flSearcher\is-F5BC3.tmp	is-4AQCE.tmp
File created	C:\Program Files (x86)\flSearcher\is-UP2AV.tmp	is-4AQCE.tmp
File created	C:\Program Files (x86)\flSearcher\is-VOQ1Q.tmp	is-4AQCE.tmp
File created	C:\Program Files (x86)\flSearcher\is-MSBJA.tmp	is-4AQCE.tmp
File opened for modification	C:\Program Files (x86)\flSearcher\unins000.dat	is-4AQCE.tmp
File opened for modification	C:\Program Files (x86)\flSearcher\flsearcher67.exe	is-4AQCE.tmp
File created	C:\Program Files (x86)\flSearcher\unins000.dat	is-4AQCE.tmp
File created	C:\Program Files (x86)\flSearcher\is-PJF7I.tmp	is-4AQCE.tmp
File created	C:\Program Files (x86)\flSearcher\is-8DBT7.tmp	is-4AQCE.tmp
File created	C:\Program Files (x86)\flSearcher\is-SLNVJ.tmp	is-4AQCE.tmp
File created	C:\Program Files (x86)\flSearcher\is-F8Q9M.tmp	is-4AQCE.tmp
File created	C:\Program Files (x86)\flSearcher\is-BR3LC.tmp	is-4AQCE.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
3096	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2160	flsearcher67.exe
2160	flsearcher67.exe
2160	flsearcher67.exe
2160	flsearcher67.exe
2160	flsearcher67.exe
2160	flsearcher67.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3096	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1556 wrote to memory of 3480	1556	d40e885372f07f3cb35ebbc99ac3dbba5d0f34c6ad58d461dbf37505be04d67d.exe	80
PID 1556 wrote to memory of 3480	1556	d40e885372f07f3cb35ebbc99ac3dbba5d0f34c6ad58d461dbf37505be04d67d.exe	80
PID 1556 wrote to memory of 3480	1556	d40e885372f07f3cb35ebbc99ac3dbba5d0f34c6ad58d461dbf37505be04d67d.exe	80
PID 3480 wrote to memory of 2160	3480	is-4AQCE.tmp	81
PID 3480 wrote to memory of 2160	3480	is-4AQCE.tmp	81
PID 3480 wrote to memory of 2160	3480	is-4AQCE.tmp	81
PID 2160 wrote to memory of 916	2160	flsearcher67.exe	85
PID 2160 wrote to memory of 916	2160	flsearcher67.exe	85
PID 2160 wrote to memory of 916	2160	flsearcher67.exe	85
PID 2160 wrote to memory of 4684	2160	flsearcher67.exe	90
PID 2160 wrote to memory of 4684	2160	flsearcher67.exe	90
PID 2160 wrote to memory of 4684	2160	flsearcher67.exe	90
PID 4684 wrote to memory of 3096	4684	cmd.exe	92
PID 4684 wrote to memory of 3096	4684	cmd.exe	92
PID 4684 wrote to memory of 3096	4684	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\d40e885372f07f3cb35ebbc99ac3dbba5d0f34c6ad58d461dbf37505be04d67d.exe
"C:\Users\Admin\AppData\Local\Temp\d40e885372f07f3cb35ebbc99ac3dbba5d0f34c6ad58d461dbf37505be04d67d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1556
- C:\Users\Admin\AppData\Local\Temp\is-GMQUL.tmp\is-4AQCE.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-GMQUL.tmp\is-4AQCE.tmp" /SL4 $1C0022 "C:\Users\Admin\AppData\Local\Temp\d40e885372f07f3cb35ebbc99ac3dbba5d0f34c6ad58d461dbf37505be04d67d.exe" 2359686 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:3480
- - C:\Program Files (x86)\flSearcher\flsearcher67.exe
    "C:\Program Files (x86)\flSearcher\flsearcher67.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2160
  - - C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\r5QUbVFsJ.exe
      4⤵
      Executes dropped EXE
      PID:916
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "flsearcher67.exe" /f & erase "C:\Program Files (x86)\flSearcher\flsearcher67.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4684
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "flsearcher67.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3096

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\flSearcher\flsearcher67.exe

Filesize
3.6MB

MD5
7d90bf57441152bd7010c8258f572e03

SHA1
bb6e8cb1ce287fb0c924b49bdc7634219c93339f

SHA256
fb72f1404e89af2d3d99f1f645653a3d38d048b97cd0f10c7a70ce4b36b7ac09

SHA512
2a68b85ad251d6922c1b71d8fe68ea10e3a7c24b292cb503f5a7647c5d7ff701fd0739522195191e7e3678fb99f848e69cf6a05c9ecee3b1c3a2d5f4c0fbc565

Download Submit
C:\Program Files (x86)\flSearcher\flsearcher67.exe

Filesize
3.6MB

MD5
7d90bf57441152bd7010c8258f572e03

SHA1
bb6e8cb1ce287fb0c924b49bdc7634219c93339f

SHA256
fb72f1404e89af2d3d99f1f645653a3d38d048b97cd0f10c7a70ce4b36b7ac09

SHA512
2a68b85ad251d6922c1b71d8fe68ea10e3a7c24b292cb503f5a7647c5d7ff701fd0739522195191e7e3678fb99f848e69cf6a05c9ecee3b1c3a2d5f4c0fbc565

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-FDCMG.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-GMQUL.tmp\is-4AQCE.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-GMQUL.tmp\is-4AQCE.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\r5QUbVFsJ.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\r5QUbVFsJ.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1556-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1556-137-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1556-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2160-143-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/2160-144-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/2160-142-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/2160-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2160-152-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/2160-155-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download

Analysis

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