nymaim | 26f582446d55c9f45c0746f623ca5d4d08cefaf4883e691df1f0a247f08d6235

General

Target

file.exe
Size

2.5MB
MD5

87bcf26534959d1538b363cc9fb571d9
SHA1

95c37bc9f4f157b6c1f035f237aa5512612d67f9
SHA256

26f582446d55c9f45c0746f623ca5d4d08cefaf4883e691df1f0a247f08d6235
SHA512

ecb3d972a06985df2c67bf5c8db1caa9ce1f6b7d351b4d3b042184138fc6126b06a675184e97f2ae8da2175e45c056da45172e76f483b26d923d9df5b796334e
SSDEEP

49152:Z2aA3tcKag+pXqoMLfVvjKMnf5GfHqfmeMb2rzqySFA5hq:M/ZV+pXqoMLYuGfH1eMarzqODq

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
1900	is-ABHV9.tmp
4336	ffsearcher64.exe
1180	RSXP2.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	ffsearcher64.exe

Loads dropped DLL 1 IoCs

pid	Process
1900	is-ABHV9.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)\ffSearcher\is-4PLO3.tmp	is-ABHV9.tmp
File created	C:\Program Files (x86)\ffSearcher\is-3UA7K.tmp	is-ABHV9.tmp
File created	C:\Program Files (x86)\ffSearcher\is-H4IQG.tmp	is-ABHV9.tmp
File created	C:\Program Files (x86)\ffSearcher\unins000.dat	is-ABHV9.tmp
File created	C:\Program Files (x86)\ffSearcher\is-IIMH2.tmp	is-ABHV9.tmp
File created	C:\Program Files (x86)\ffSearcher\is-M1U9V.tmp	is-ABHV9.tmp
File created	C:\Program Files (x86)\ffSearcher\is-SHQC7.tmp	is-ABHV9.tmp
File opened for modification	C:\Program Files (x86)\ffSearcher\ffsearcher64.exe	is-ABHV9.tmp
File created	C:\Program Files (x86)\ffSearcher\is-O8EU0.tmp	is-ABHV9.tmp
File created	C:\Program Files (x86)\ffSearcher\is-6JTTV.tmp	is-ABHV9.tmp
File created	C:\Program Files (x86)\ffSearcher\is-IB1RA.tmp	is-ABHV9.tmp
File opened for modification	C:\Program Files (x86)\ffSearcher\unins000.dat	is-ABHV9.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
32	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4336	ffsearcher64.exe
4336	ffsearcher64.exe
4336	ffsearcher64.exe
4336	ffsearcher64.exe
4336	ffsearcher64.exe
4336	ffsearcher64.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	32	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3752 wrote to memory of 1900	3752	file.exe	81
PID 3752 wrote to memory of 1900	3752	file.exe	81
PID 3752 wrote to memory of 1900	3752	file.exe	81
PID 1900 wrote to memory of 4336	1900	is-ABHV9.tmp	82
PID 1900 wrote to memory of 4336	1900	is-ABHV9.tmp	82
PID 1900 wrote to memory of 4336	1900	is-ABHV9.tmp	82
PID 4336 wrote to memory of 1180	4336	ffsearcher64.exe	84
PID 4336 wrote to memory of 1180	4336	ffsearcher64.exe	84
PID 4336 wrote to memory of 1180	4336	ffsearcher64.exe	84
PID 4336 wrote to memory of 4512	4336	ffsearcher64.exe	85
PID 4336 wrote to memory of 4512	4336	ffsearcher64.exe	85
PID 4336 wrote to memory of 4512	4336	ffsearcher64.exe	85
PID 4512 wrote to memory of 32	4512	cmd.exe	87
PID 4512 wrote to memory of 32	4512	cmd.exe	87
PID 4512 wrote to memory of 32	4512	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3752
- C:\Users\Admin\AppData\Local\Temp\is-608J4.tmp\is-ABHV9.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-608J4.tmp\is-ABHV9.tmp" /SL4 $B005A "C:\Users\Admin\AppData\Local\Temp\file.exe" 2382577 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1900
- - C:\Program Files (x86)\ffSearcher\ffsearcher64.exe
    "C:\Program Files (x86)\ffSearcher\ffsearcher64.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4336
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\RSXP2.exe
      4⤵
      Executes dropped EXE
      PID:1180
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "ffsearcher64.exe" /f & erase "C:\Program Files (x86)\ffSearcher\ffsearcher64.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4512
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "ffsearcher64.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:32

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)\ffSearcher\ffsearcher64.exe

Filesize
3.8MB

MD5
7351f520d4cfad4558ed69f36b490e11

SHA1
e291630c7cc4400b434b7a9c15841468b898747e

SHA256
20a9b615c57e870a239b665fc28090e1c0ed7ea0677f5f3f77114ef30de46866

SHA512
4641c9fc1cb7395cadb3dab42de5faea7c1a702cadbd907d5b3c2f1bc551d8c092f0527caf1f7d9acf011a692cc83069f8e429518e7eed26288e2e4e0106638c

Download Submit
C:\Program Files (x86)\ffSearcher\ffsearcher64.exe

Filesize
3.8MB

MD5
7351f520d4cfad4558ed69f36b490e11

SHA1
e291630c7cc4400b434b7a9c15841468b898747e

SHA256
20a9b615c57e870a239b665fc28090e1c0ed7ea0677f5f3f77114ef30de46866

SHA512
4641c9fc1cb7395cadb3dab42de5faea7c1a702cadbd907d5b3c2f1bc551d8c092f0527caf1f7d9acf011a692cc83069f8e429518e7eed26288e2e4e0106638c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-608J4.tmp\is-ABHV9.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-608J4.tmp\is-ABHV9.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7TPRN.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\RSXP2.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\RSXP2.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/3752-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3752-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3752-134-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4336-143-0x0000000000400000-0x00000000015C1000-memory.dmp

Filesize
17.8MB

Download
memory/4336-144-0x0000000000400000-0x00000000015C1000-memory.dmp

Filesize
17.8MB

Download
memory/4336-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4336-152-0x0000000000400000-0x00000000015C1000-memory.dmp

Filesize
17.8MB

Download
memory/4336-142-0x0000000000400000-0x00000000015C1000-memory.dmp

Filesize
17.8MB

Download
memory/4336-155-0x0000000000400000-0x00000000015C1000-memory.dmp

Filesize
17.8MB

Download

Analysis

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